GL 121 Hazcard Index (CLP Hazcards, 2016 Edition, and later updates)

Version 11: November 2018 update Note: This is a working document and will be subject to frequent updates. Check the latest version at www.cleapss.org.uk

Hazcard Index • Please use this index, or the search facility on the website, to find information on a particular chemical before contacting CLEAPSS. • This Index covers the chemicals included in the 2016 Edition of Hazcards (and later updates). • When each new version of this Index is published, a shaded box is used to highlight the latest updates or amendments to Hazcards; the date of the update/amendment is also indicated. • Amendments made to Hazcards since September 2016 are summarised on pages 2 and 3 (overleaf). • Chemicals are listed in the Index by their systematic names and/or by commonly-used alternative (or familiar) names as appropriate. • The Hazcard number is given for each chemical. References to other information (eg, a Recipe) may also be included. • Some chemicals occasionally used in school science activities do not, currently, appear on Hazcards but may be included in later versions. Contact CLEAPSS for information if necessary.

Banned chemicals Very few chemicals are banned nationally. These are indicated in the Hazcard Index by ‘B’ and are also emphasised by being in bold print. Chemicals that are not recommended Chemicals that are not recommended or are not suitable for general use in schools are indicated in the Hazcard Index by ‘NR’ and are also emphasised by being in bold print. It may still be possible to use ‘NR’ chemicals under certain circumstances – contact CLEAPSS to discuss. MRATs For several entries in this Index, ‘See MRATs’ is stated in the Notes column. This refers to Model Risk Assessments for Design and Technology in Secondary Schools. These can be found on the CLEAPSS Design and Technology website: dt.cleapss.org.uk.

Read Hazcards in conjunction with About Hazcards (Guide GL120).

GL 121 11/2018 ©CLEAPSS®, The Gardiner Building, Brunel Science Park, Kingston Lane, Uxbridge UB8 3PQ Tel: 01895 251496; Fax: 01895 814372; E-mail: [email protected]; Web site: www.cleapss.org.uk

Updates 2018 Summary of amendments and updates made to the 2016 Edition Hazcards since 1st November 2017, up to and including 1st November 2018 (see page 3 for 2017 changes) Hazcard Amendment/update note

3D Hazard classification information updated for nicotine. No change to general guidance.

15A Storage/Emergencies sections amended to remove references to sodium thiosulfate. WEL values* introduced for oxide and calcium hydroxide as respirable dusts. 18 No change to general guidance. 21 WEL values* lowered for carbon monoxide. No change to general guidance.

23 WEL values* lowered for 1,4-dichlorobenzene. No change to general guidance.

28 WEL values* updated for dichloromethane (lower STEL). No change to general guidance.

38A WEL values* introduced for ethanoic acid. No change to general guidance.

40A On reverse: amendment to note on evaporation/cooling activity.

40B Typo in 4th ‘Dangerous in contact with …’ bullet point: ‘’ corrected to ‘methanol’. Information added about propene (front and reverse). EUH006 replaced by H230 for ethyne 45C (acetylene). Hazard classification information corrected for limonene (front and reverse). Hazcard rearranged (front and reverse). No change to general guidance. 55C Disposal information for iron(III) chloride amended to cover both solid and solutions.

58A Storage note (first bullet point) re-worded for clarification. New (lower) WEL values* for manganese and its compounds. Note about manganese(IV) 60 oxide and hydrogen peroxide moved to reverse of Hazcard. No change to general guidance.

65B Typo in H codes for nickel(II) chloride: H332 corrected to H331. WEL values* introduced for nitrogen monoxide and nitrogen dioxide. 68B Front of Hazcard rearranged plus minor rewording. No change to general guidance. 76 Storage note (first bullet point) re-worded for clarification.

87 Disposal information (reverse): deleted reference to recycle/re-use (W3) for silver solutions.

88 Storage note (first bullet point) re-worded for clarification.

95C WEL values* lowered for sodium and potassium cyanides. No change to general guidance.

WEL values* introduced for sulfur dioxide. 97 Minor rewording on front of Hazcard. No change to general guidance.

99 WEL values* lowered for tetrachloroethene. No change to general guidance.

100 WEL values* lowered for tetrachloromethane. No change to general guidance.

*EH40/2005 Workplace Exposure Limits, Third Edition, 2018, HSE (Health and Safety Executive)

GL 121 11/2018 2

Updates 2017 Summary of amendments and updates made to the 2016 Edition Hazcards since September 2016, up to and including 1st November 2017 Hazcard Amendment/update note

2B Formula for aluminium sulfate corrected to AlNH4(SO4)2.12H2O.

References to Recipe 6B (for amine solutions) corrected to Recipe 6. 3A/3B [Note: Recipe 6 will be amended/updated to also include amine solutions.]

10A Reference to ‘calcium’ (Other notes section, on reverse) corrected to ‘’.

17 Pictogram error on reverse corrected from GHS02 to GHS03.

Copper(II) chromate: Info in storage section reworded. ‘Keep damp’ is deleted and replaced 27B by ‘Dispose after use’. Note: “Keep damp” referred to (i) the use of the substance for the migration of activity and (ii) minimising the risk of dust inhalation. Storage information for 2,4-dinitrophenylhydrazine re-worded for clarification. 30 Acronym amended to 2,4-DNPH. Printed (purchased) sets of the 2016 Edition included a pictogram error on the front: GHS07 40A appeared twice; one should have been GHS02. Online version (09/2016) was correct.

41 Storage information corrected to include decanedioyl dichloride.

47B Minor typos/missing H code corrected.

55C Formula mass of iron(III) nitrate(V) corrected to 403.99.

64 Formula mass of dibutyl phthalate corrected to 278.34.

Nickel(II) sulfate(VI) salts: formulae/formula masses corrected and given for both the hexa- 65B and hepta- hydrates. Added supplemental hazard statement: Corrosive to the respiratory tract [EUH071]. 67 References to nitrogen oxides amended to Hazcard 68B.

78C Title line (front & back) corrected to read: Risk assessment (also 78A, 78B).

79 Recipe reference for rust indicator (ferroxyl solution) corrected to Recipe 101.

85B Hazard classification information added for 1,2-diphenylethanedione (benzil).

96A Added clarification for disposal of sulfur waste: W2 and W8.

106 Minor typo (on reverse) corrected: silicon dioxide.

108A Information added for zinc nitrate solutions ≥ 0.7 M.

GL 121 11/2018 3

Hazcard Index

Hazcard Chemical Hazcard Recipe Notes updated Acenaphthene 46B – Sept 2016 Acetaldehyde 34 – Sept 2016 Acetamide 35A – Sept 2016 Acetanilide 35A – Sept 2016 Acetic acid 38A 39 Nov 2018 Acetic anhydride 39 – Sept 2016 Acetone 85A 2 Sept 2016 Acetonitrile – – – Acetophenone 85B – Nov 2017 Acetyl chloride 41 – Nov 2017 Acetylcholine chloride 3D – Nov 2018 di acetyl-dioxime 53 – Sept 2016 Acetylene 45C – Nov 2018 2- acetyloxybenzoic acid 52 – Sept 2016 o- acetylsalicylic acid 52 – Sept 2016 Acid blue 40 32 – Sept 2016 Acid chlorides/acyl chlorides 41 – Nov 2017 Acridine orange 32 – Sept 2016 Acrylamide NR, 35B – Sept 2016 Acrylic cement – – – Refer to MRATs Acrylics – – – Refer to MRATs Activated carbon (activated charcoal) 21 – Nov 2018 Adenosine triphosphate (sodium/potassium salt) 72 – Sept 2016 Adhesives – – – Refer to MRATs Adipoyl chloride 41 – Nov 2017 L- adrenaline 3D – Nov 2018 Agar & agar recipes – 1 – Alcohols (see under specific names) – – – Alcohol/water solutions – 2 – Aldehydes (see under specific names) – – – Alginate gels 95A 3 Sept 2016 Alizarin 32 101 Sept 2016 Alum (potash alum) 2B 4 Nov 2017 Alumina 2B – Nov 2017 Aluminium metal (various: foil, powder) 1 – Sept 2016 Aluminium acetate 2B – Nov 2017 Aluminium ammonium sulfate(VI)-12-water 2B – Nov 2017 Aluminium bromide (anhydrous) 2A – Sept 2016 Aluminium chloride (anhydrous) 2A – Sept 2016 Aluminium chloride-6-water 2A 4 Sept 2016 Aluminium ethanoate 2B – Nov 2017 Aluminium nitrate(V)-9-water 2B – Nov 2017 Aluminium oxide 2B – Nov 2017 Aluminium potassium sulfate(VI)-12-water 2B 4 Nov 2017 Aluminium sulfate(VI)-16-water 2B – Nov 2017 32 – Sept 2016 Amalgam (mercury) 61 – Sept 2016 AMG (see Enzymes) 33 – Sept 2016 Amidosulfonic acid 98B – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 4 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Amines (see under specific names) – – – Amino acids 38D – Sept 2016 Aminobenzene (and its salts) 4A – Sept 2016 3- aminobenzene-1,2-dicarboxylic hydrazide 4B 23 Sept 2016 2- aminobenzenecarboxylic acid 13C – Sept 2016 3- aminobenzenecarboxylic acid – – – 4- aminobenzenecarboxylic acid 13C – Sept 2016 4- aminobenzenesulfonic acid 4B – Sept 2016 2- aminobenzoic acid 13C – Sept 2016 3- aminobenzoic acid – – – 4- aminobenzoic acid 13C – Sept 2016 o- aminobenzoic acid 13C – Sept 2016 m- aminobenzoic acid – – – p- aminobenzoic acid 13C – Sept 2016 4- aminobiphenyl B – – 1- aminobutane 3A 6 Nov 2017 Aminoethane 3A 6 Nov 2017 1,2-di aminoethane 3B 6 Nov 2017 1,6-di aminohexane 3B 62 Nov 2017 Aminomethane 3A 6 Nov 2017 4- aminophenol (p-aminophenol) 70B – Sept 2016 3- aminophthalhydrazide (luminol) 4B 23 Sept 2016 880 6 6 Sept 2016 Ammonia gas 5 5 Sept 2016 Ammonia solution 6 6 Sept 2016 Ammoniacal silver nitrate(V) (Tollen’s reagent) 87 77, 102 Nov 2018 9A – Sept 2016 Ammonium alum 2B – Nov 2017 tri ammonium aurine tricarboxylate 32 – Sept 2016 Ammonium bromide 9A – Sept 2016 (-1-water) 9A – Sept 2016 Ammonium chlorate(VII) NR – – 9A 7 Sept 2016 Ammonium dichromate(VI) 7 – Sept 2016 Ammonium dihydrogenphosphate(V) 72 – Sept 2016 Ammonium ethanedioate (-1-water) 36A – Sept 2016 Ammonium ethanoate 9A – Sept 2016 Ammonium ferrous sulfate(VI) 55B 51 Sept 2016 di ammonium hydrogenphosphate(V) 72 – Sept 2016 Ammonium hydroxide 6 6 Sept 2016 Ammonium iodide 9A – Sept 2016 di ammonium iron(II) sulfate(VI)-6-water 55B 51 Sept 2016 Ammonium iron(III) sulfate(VI)-12-water 55C 52 Nov 2018 Ammonium metavanadate 9B 8 Sept 2016 Ammonium molybdate(VI)-4-water 9A – Sept 2016 Ammonium nickel(II) sulfate(VI)-6-water NR, 65B – Nov 2018 Ammonium nitrate(V) 8 – Sept 2016 36A – Sept 2016 Ammonium peroxodisulfate(VI) 8 – Sept 2016 Ammonium persulfate 8 – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 5 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Ammonium phosphate(V)-3-water 72 – Sept 2016 Ammonium polytrioxovanadate 9B 8 Sept 2016 Ammonium purpurate 32 – Sept 2016 Ammonium sodium hydrogenphosphate(V) 72 – Sept 2016 Ammonium sulfate(VI) 9A – Sept 2016 Ammonium sulfide 51B – Sept 2016 Ammonium thiocyanate 9B – Sept 2016 Ammonium vanadate(V) 9B 8 Sept 2016 iso- amyl acetate 43A – Sept 2016 n- amyl acetate 43A – Sept 2016 iso- amyl alcohol 84C – Sept 2016 n- amyl alcohol 84C – Sept 2016 Amylase (see Enzymes) 33 – Sept 2016 iso- amyl ethanoate 43A – Sept 2016 n- amyl ethanoate 43A – Sept 2016 Amylglucosidase (see Enzymes) 33 – Sept 2016 Amylopectin 40C – Sept 2016 Amylose 40C – Sept 2016 Analytical tests, gases – 99 – Analytical tests, negative ions (anions) – 100 – Analytical tests, positive ions (cations) – 101 – Analytical tests, organic functional groups – 102 – Aniline (and its salts) 4A – Sept 2016 Aniline blue 32 – Sept 2016 Anilinium salts 4A – Sept 2016 o-di anisidine B – – Anisole 42 – Sept 2016 Anthranilic acid 13C – Sept 2016 Antifebrin 35A – Sept 2016 Anti-fungal agent (Nipagin) 52 35 Sept 2016 Antimony NR, 73C – Sept 2016 Antimony trichloride NR, 73C – Sept 2016 Antimony(III) chloride NR, 73C – Sept 2016 Aqua Regia – – – Aromatic hydrocarbons 46A – Sept 2016 Arsenic and its compounds NR, 73C – Sept 2016 Asbestos B – – Ascorbic acid 38D – Sept 2016 Aspirin 52 – Sept 2016 ATP (sodium or potassium salt) 72 – Sept 2016 Azabenzene 4C – Sept 2016 Azine 4C – Sept 2016 Azo dyes 32 9 Sept 2016 Azole 4C – Sept 2016 Barium 10A – Nov 2017 Barium carbonate 10A – Nov 2017 Barium chloride-2-water 10A 10 Nov 2017 Barium chromate(VI) 11 – Sept 2016 Barium diphenylamine sulfonate 10B – Sept 2016 Barium hydroxide-8-water 10B – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 6 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Barium nitrate(V) 11 10 Sept 2016 Barium oxide 10B – Sept 2016 Barium peroxide 11 – Sept 2016 Barium sulfate(VI) 10B – Sept 2016 Barytes 10B – Sept 2016 Basic copper carbonate 26 – Sept 2016 Basic Fuchsin 32 – Sept 2016 Basic lead carbonate 56 – Sept 2016 Basic magnesium carbonate 59B – Sept 2016 Benedict’s solution – 11, 12 – Benzaldehyde 83 – Sept 2016 Benzamide 13A – Sept 2016 Benzamine (and its salts) 4A – Sept 2016 Benzene NR, 46A – Sept 2016 Benzene-1,2,3-triol 12B – Sept 2016 Benzene-1,2-dicarboxylic acid 13B – Sept 2016 Benzene-1,2-dicarboxylic acid anhydride 13B – Sept 2016 Benzene-1,2-diol 12A – Sept 2016 Benzene-1,3,5-triol 12B – Sept 2016 Benzene-1,3-diol 12A – Sept 2016 Benzene-1,4-dicarboxylic acid 13B – Sept 2016 Benzene-1,4-diol 12A – Sept 2016 Benzenecarbaldehyde 83 – Sept 2016 Benzenecarbonitrile 13A – Sept 2016 Benzenecarbonyl chloride 13A – Sept 2016 di (benzenecarbonyl) peroxide NR, 29 – Sept 2016 Benzenecarboxamide 13A – Sept 2016 Benzenecarboxylic acid 13A – Sept 2016 Benzenesulfonic acid 31 – Sept 2016 Benzidine B – – Benzil 85B – Nov 2017 Benzocaine 4B – Sept 2016 Benzoic acid 13A – Sept 2016 Benzol NR, 46A – Sept 2016 Benzonitrile 13A – Sept 2016 Benzophenone 85B – Nov 2017 Benzoyl chloride 13A – Sept 2016 Benzoyl peroxide NR, 29 – Sept 2016 di benzoyl peroxide NR, 29 – Sept 2016 Benzyl alcohol 40B – Nov 2018 Benzyl chloride 44A – Sept 2016 Beryllium and its compounds NR – – Bile salts 95A 37 Sept 2016 Biochemical indicators (& tests) – 13 – Biphenyl-4,4'-diamine B – – Bismuth 73D – Sept 2016 Bismuth trichloride 73D – Sept 2016 Bismuth(III) chloride 73D – Sept 2016 Bismuth(III) chloride oxide 73D – Sept 2016 Bismuth(III) nitrate(V) 73D 14 Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 7 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Bismuth(III) nitrate(V)-5-water 73D 14 Sept 2016 Bismuth(III) oxychloride 73D – Sept 2016 Biuret reagent – 15 – Black powder 82 – Sept 2016 Bleach 89 81 Sept 2016 Bleaching powder 17 – Oct 2017 Blue dextran 32 – Sept 2016 Blue John 19A – Sept 2016 Blueprints – 52 – Boracic acid 14A – Sept 2016 Borax 14A – Sept 2016 Boric acid 14A – Sept 2016 Boron compounds 14A, 14B – Sept 2016 Brady’s reagent 30 33 Nov 2017 Brilliant yellow 32 – Sept 2016 Brine – 82 – Brodie’s fluid – 16 – Bromine 15A – Nov 2018 Bromine water 15B 17 Sept 2016 2- bromo-2-methyl propane 44B – Sept 2016 Bromoalkanes 44B – Sept 2016 Bromobenzene 23 – Nov 2018 2- bromobutane 44B – Sept 2016 1- bromobutane 44B – Sept 2016 Bromocresol green 32 – Sept 2016 1,2-di bromoethane NR, 103B – Sept 2016 Bromoethane 44B – Sept 2016 Bromomethane NR – tri bromophenol – – – Bromophenol blue 32 – Sept 2016 Bromothymol blue 32 – Sept 2016 Bubble mixture – 79 – Buffer solutions – 18 – Butan-1-ol 84B – Sept 2016 Butan-2-ol 84B – Sept 2016 Butan-2-one 85A – Sept 2016 Butanal 83 – Sept 2016 Butane 45A – Sept 2016 n- butane 45A – Sept 2016 Butane-1,4-dioic acid 36B – Sept 2016 Butanedioic acid 36B – Sept 2016 Butanedione dioxime 53 101 Sept 2016 Butanoic acid 38B – Sept 2016 iso- butanol 84B – Sept 2016 n- butanol 84B – Sept 2016 Butanols 84B – Sept 2016 Butanone 85A – Sept 2016 cis- butenedioic acid 36B – Sept 2016 trans- butenedioic acid 36B – Sept 2016 n- butyl acetate 43A – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 8 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated n- butyl alcohol 84B – Sept 2016 sec- butyl alcohol 84B – Sept 2016 tert- butyl alcohol 84B – Sept 2016 iso- butyl alcohol 84B – Sept 2016 Butylamine 3A 6 Nov 2017 di butyl benzene-1,2-dicarboxylate 64 – Nov 2017 n- butyl bromide 44B – Sept 2016 sec- butyl bromide 44B – Sept 2016 tert- butyl bromide 44B – Sept 2016 n- butyl chloride 44A – Sept 2016 sec- butyl chloride 44A – Sept 2016 tert- butyl chloride 44A – Sept 2016 Butyl ethanoate 43A – Sept 2016 n- butyl iodide 44B – Sept 2016 iso- butyl methyl ketone 85A – Sept 2016 di butyl phthalate 64 – Nov 2017 Butyraldehyde 83 – Sept 2016 n- butyric acid 38B – Sept 2016 Cadmium NR, 61 – Sept 2016 Cadmium salts/compounds NR, 62 – Sept 2016 Caesium chloride 47B – Nov 2017 Caffeine 3D – Nov 2018 Calcite 19B – Sept 2016 Calcium 16 – Sept 2016 Calcium acetylide 19C – Sept 2016 Calcium bromide 19A – Sept 2016 Calcium carbide 19C – Sept 2016 Calcium carbonate 19B – Sept 2016 (I) 17 – Oct 2017 Calcium chloride (anhydrous) 19A – Sept 2016 Calcium chloride-6-water (hydrated) 19A 19 Sept 2016 Calcium chromate(VI)-2-water 19B – Sept 2016 Calcium dicarbide 19C – Sept 2016 Calcium dihydrogenphosphate(V)-2-water 72 – Sept 2016 Calcium fluoride 19A – Sept 2016 Calcium hydroxide 18 20 Nov 2018 Calcium hypochlorite 17 – Oct 2017 Calcium nitrate(V)-4-water 19B 19 Sept 2016 Calcium orthophosphate 72 – Sept 2016 Calcium oxide 18 – Nov 2018 Calcium phosphate(V) 72 – Sept 2016 Calcium phosphide 19C – Sept 2016 Calcium sulfate(VI) 19B – Sept 2016 Calcium sulfate(VI)-0.5-water (hemihydrate) 19B – Sept 2016 Calcium sulfate(VI)-2-water (dihydrate) 19B – Sept 2016 Calomel 62 – Sept 2016 Caproic acid 38B – Sept 2016 Caproyl alcohol 84C – Sept 2016 Capryl alcohol 84C – Sept 2016 Sec- Caprylic alcohol 84C – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 9 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Carbamide 35A – Sept 2016 Carbohydrates 40C – Sept 2016 Carbohydraze mixture (see Enzymes) 33 – Sept 2016 Carbolic acid 70A – Sept 2016 Carbon 21 – Nov 2018 Carbon black 21 – Nov 2018 Carbon dioxide 20A 21 Sept 2016 Carbon dioxide indicator – 48 – Carbon disulfide NR, 20B – Sept 2016 Carbon monoxide 21 – Nov 2018 Carbon tetrachloride B, 100 – Nov 2018 Carbosorb 91A – Sept 2016 bis[bis( carboxy)amino]ethane (disodium salt), EDTA 3C – Sept 2016 Carmine 32 – Sept 2016 Cassiterite (tin(IV) oxide) 102B – Sept 2016 Catalase (see Enzymes) 33 – Sept 2016 Catechol 12A – Sept 2016 Caustic potash 91B 71 Sept 2016 Caustic soda 91A 85 Sept 2016 CDA 40A – Nov 2018 Celluclast (see Enzymes) 33 – Sept 2016 Cellulase (see Enzymes) 33 – Sept 2016 Cellulose 40C – Sept 2016 Celluzyme (see Enzymes) 33 – Sept 2016 Cement 18 – Nov 2018 Ceramic wool (ceramic fibre wool/mineral wool) 86A – Sept 2016 Cerium(IV) solutions – 22 – Cerrusite 56 – Sept 2016 Cesium chloride 47B – Nov 2017 Cetyl alcohol 84C – Sept 2016 Chalk 19B – Sept 2016 Charcoal 21 – Nov 2018 Chemiluminescent mixtures – 23 – Chemosin (see Enzymes) 33 – Sept 2016 Chloric(VII) acid NR – – Chlorine gas 22A 24 Sept 2016 Chlorine water 22B 25 Sept 2016 Chloroacetic acid 38C – Sept 2016 di chloroacetic acid 38C – Sept 2016 tri chloroacetic acid 38C – Sept 2016 Chloroalkanes 44A – Sept 2016 Chlorobenzene 23 – Nov 2018 1,4-di chlorobenzene 23 – Nov 2018 1,2-di chlorobenzene 23 – Nov 2018 o-di chlorobenzene 23 – Nov 2018 p-di chlorobenzene 23 – Nov 2018 1- chlorobutane 44A – Sept 2016 2- chlorobutane 44A – Sept 2016 1,2-di chloroethane NR, 103B – Sept 2016 1,1,1-tri chloroethane B, 103A – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 10 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Chloroethane NR – – Chloroethanoic acid 38C – Sept 2016 di chloroethanoic acid 38C – Sept 2016 tri chloroethanoic acid 38C – Sept 2016 tetra chloroethene 99 – Nov 2018 tri chloroethene NR, 99 – Nov 2018 Chloroethene NR – – tetra chloroethylene 99 – Nov 2018 tri chloroethylene NR, 99 – Nov 2018 Chloroform NR, 104 – Sept 2016 di chloromethane 28 – Nov 2018 tetra chloromethane B, 100 – Nov 2018 tri chloromethane NR, 104 – Sept 2016 (Chloromethyl)benzene 44A – Sept 2016 2- chloro-2-methylpropane 44A – Sept 2016 tri chlorophenol – – – 2,6-di chlorophenolindophenol 32 13 Sept 2016 1- chloropropane 44A – Sept 2016 Chloro-substituted ethanoic acids 38C – Sept 2016 Chlorosulfonic acid NR – – α- chlorotoluene 44A – Sept 2016 Chlor-zinc-iodine (Schulze’s solution) – 93 – Cholesteryl benzoate – – – Chrom-acetic fixative NR – – Chromatography solvents & locating agents – 26 – Chrome alum 24 27 Sept 2016 Chromic acid NR – – Chromium 24 – Sept 2016 Chromium(III) compounds 24 – Sept 2016 Chromium trioxide NR – – Chromium(III) chloride(-6-water) 24 27 Sept 2016 Chromium(III) nitrate(V)-9-water 24 – Sept 2016 Chromium(III) oxide 24 – Sept 2016 Chromium(III) potassium sulfate(VI)-12-water 24 27 Sept 2016 Chromium(III) salts 24 – Sept 2016 Chromium(VI) oxide NR – – Chromium(III) sulfate 24 – Sept 2016 Cinnabar 62 – Sept 2016 Citric acid (and hydrate) 36C 28 Sept 2016 Clock reaction mixtures – 29 – Coal 21 – Nov 2018 Cobalt 25 – Sept 2016 Cobalt compounds 25 – Sept 2016 Cobalt(II) carbonate 25 – Sept 2016 Cobalt(II) chloride-6-water 25 30 Sept 2016 Cobalt(II) nitrate(V)-6-water 25 30 Sept 2016 Cobalt(II) sulfate(VI)-7-water 25 30 Sept 2016 Cochineal 32 – Sept 2016 Colchicine NR, 3D – Nov 2018 Cole’s reagent (alternative to Millon’s reagent) – 13 – © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 11 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Completely denatured alcohol (CDA) 40A – Nov 2018 Congo red 32 – Sept 2016 Copper metal 26 – Sept 2016 Copper(I) chloride 27A – Sept 2016 Copper(I) iodide 27A – Sept 2016 Copper(I) oxide 26 – Sept 2016 Copper(II) acetate (hydrated) 27B – Nov 2017 Copper(II) carbonate, basic 26 – Sept 2016 Copper(II) carbonate hydroxide 26 – Sept 2016 Copper(II) chloride-2-water 27A 31 Sept 2016 Copper(II) chromate(VI) 27B – Nov 2017 Copper(II) ethanoate-1-water 27B – Nov 2017 Copper(II) nitrate(V)-3-water 27B 31 Nov 2017 Copper(II) oxide 26 – Sept 2016 Copper pyrites 26 – Sept 2016 Copper(II) sulfate(VI) (anhydrous) 27C 31 Sept 2016 Copper(II) sulfate(VI)-5-water (pentahydrate) 27C 31 Sept 2016 Copper(II) sulfide 26 – Sept 2016 Cotton blue 32 – Sept 2016 Cresol red 32 – Sept 2016 Cresols (o-, m-, p-) 70A – Sept 2016 ‘Crude oil’ (synthetic/artificial) 45A 32 Sept 2016 Crystal violet 32 – Sept 2016 Cupric acetate, hydrated 27B – Nov 2017 Cupric carbonate 26 – Sept 2016 Cupric chloride 27A – Sept 2016 Cupric chromate 27B – Nov 2017 Cupric nitrate, hydrated 27B – Nov 2017 Cupric oxide 26 – Sept 2016 Cuprous chloride 27A – Sept 2016 Cuprous iodide 27A – Sept 2016 Cuprous oxide 26 – Sept 2016 Cyanides NR – – Cyclohexane 45B – Sept 2016 Cyclohexanol 84C – Sept 2016 Cyclohexanone 85B – Nov 2017 Cyclohexene 45C – Nov 2018 DCM 28 – Nov 2018 DCPIP 32 13 Sept 2016 n- Decane (follow guidance as for white spirit) 45B – Sept 2016 Decanedioyl dichloride 41 – Nov 2017 Devarda’s alloy – 100 – Dextrin 40C – Sept 2016 Dextrose 40C – Sept 2016 Di(dodecanoyl) peroxide 29 – Sept 2016 Diacetyl-dioxime 53 – Sept 2016 1,2- diaminoethane 3B 6 Nov 2017 1,6- diaminohexane 3B 62 Nov 2017 Diammonium hydrogenphosphate(V) 72 – Sept 2016 Diammonium iron(II) sulfate(VI)-6-water 55B 51 Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 12 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated o- dianisidine B – – Diastase (see Enzymes) 33 – Sept 2016 Diazine green 32 – Sept 2016 Di(benzenecarbonyl) peroxide NR, 29 – Sept 2016 Dibenzoyl peroxide NR, 29 – Sept 2016 1,2- dibromoethane NR, 103B – Sept 2016 Dibutyl benzene-1,2-dicarboxylate 64 – Nov 2017 Dibutyl phthalate 64 – Nov 2017 Dichloroacetic acid 38C – Sept 2016 1,2- dichlorobenzene 23 – Nov 2018 1,4- dichlorobenzene 23 – Nov 2018 o- dichlorobenzene 23 – Nov 2018 p- dichlorobenzene 23 – Nov 2018 1,2- dichloroethane NR, 103B – Sept 2016 Dichloroethanoic acid 38C – Sept 2016 Dichloromethane 28 – Nov 2018 2,6- dichlorophenolindophenol 32 13 Sept 2016 Di(dodecanoyl)peroxide 29 – Sept 2016 Diethyl ether 42 – Sept 2016 Diethyl sulfate(VI) NR – – 1,2- dihydroxyanthraquinone 32 – Sept 2016 1,2- dihydroxybenzene 12A – Sept 2016 1,3- dihydroxybenzene 12A – Sept 2016 1,4- dihydroxybenzene 12A – Sept 2016 2,3- dihydroxybutanedioic acid 36C – Sept 2016 2,2- dihydroxy-1,3-indanedione 66 13 Sept 2016 Dilauryl peroxide 29 – Sept 2016 Di-lead(II) lead(IV) oxide 56 – Sept 2016 3,3'- dimethoxybiphenyl-4,4'-diamine B – – Dimethyl sulfate(VI) NR – – N,N- dimethylaniline 4A – Sept 2016 Dimethylbenzene, including all isomers 46A – Sept 2016 3,3'- dimethylbiphenyl-4,4'-diamine B – – Dimethylglyoxime 53 – Sept 2016 N,N- dimethylphenylamine 4A – Sept 2016 2,4- dinitrobromobenzene NR – – 2,4- dinitrochlorobenzene NR – – 2,4- dinitrofluorobenzene NR – – Dinitrogen monoxide 68B 42 Nov 2018 Dinitrogen tetroxide 68B – Nov 2018 2,4- dinitrophenylhydrazine 30 33 Nov 2017 3,5- Dinitrosalicylic acid 52 34 – Dipentene 45C – Nov 2018 D-(+)- dipentene 45C – Nov 2018 Diphenylamine 4A – Sept 2016 Diphenylamine indicator (dichromate titration) – 49 – Diphenylamine-4-sulfonic acid, barium salt 10B 49 Sept 2016 1,2- diphenylethanedione (benzil) 85B – Nov 2017 Diphenylmethanone 85B – Nov 2017 Diphenylthiocarbazone 32 – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 13 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Diphosphine – – – Diphosphorus pentoxide 75 – Sept 2016 Dipotassium disulfate(IV) 92 – Sept 2016 Dipotassium hydrogenphosphate(V) 72 – Sept 2016 Dipotassium hydrogenphosphate(V)-3-water 72 – Sept 2016 Dipotassium peroxodisulfate(VI) 95B – Sept 2016 Direct dye 28 32 – Sept 2016 Direct red 23 32 – Sept 2016 Disodium disulfate(IV) 92 97 Sept 2016 Disodium hydrogen orthophosphate 72 – Sept 2016 Disodium hydrogenphosphate(V) 72 – Sept 2016 Disodium hydrogenphosphate(V), hydrated 72 – Sept 2016 Disodium peroxodisulfate(VI) 95B – Sept 2016 Disodium tetraborate-10-water/decahydrate 14A – Sept 2016 Disperse yellow 7 32 – Sept 2016 Disulfur dichloride 96B – Sept 2016 Dithioxamide 35A – Sept 2016 Dithizone 32 – Sept 2016 DNS / DNSA (3,5-dinitrosalicylic acid) 52 34 – Dodecanoic acid 38B – Sept 2016 di (dodecanoyl) peroxide 29 – Sept 2016 Dodecylbenzenesulfonic acid 31 – Sept 2016 Drosophila, medium (food base) – 35 – Dry ice 20A – Sept 2016 Dry-Chlor 89 – Sept 2016 Dutch metal – – – Dyes 32 – Sept 2016 Dyes, indicators and stains 32 – Sept 2016 EDTA (and salts) 3C – Sept 2016 Electroplating solutions – 36 – Engine oils, unused (eg, for viscosity activities) 46A – Sept 2016 Enzymes 33 37 Sept 2016 Eosin 32 – Sept 2016 Epinephrine 3D – Nov 2018 Epsom salts 59B – Sept 2016 Eriochrome black 32 – Sept 2016 Esters (see under specific names) – – – Ethanal 34 – Sept 2016 Ethanal tetramer 34 – Sept 2016 Ethanamide 35A – Sept 2016 Ethane 45A – Sept 2016 Ethane-1,2-diamine 3B 6 Nov 2017 Ethane-1,2-diol (1,2-ethanediol) 37A – Sept 2016 Ethanedioic acid (and its salts) 36A – Sept 2016 Ethanenitrile – – – Ethanoic acid 38A 39 Nov 2018 Ethanoic anhydride 39 – Sept 2016 Ethanol 40A 2 Nov 2018 Ethanoyl chloride 41 – Nov 2017 2- ethanoyloxybenzoic acid 52 – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 14 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Ethene 45C – Nov 2018 Ether 42 – Sept 2016 Ethidium bromide NR, 3D, 32 – Nov 2018 Ethoxyethane 42 – Sept 2016 Ethyl acetate 43A – Sept 2016 Ethyl alcohol 40A 2 Nov 2018 Ethylamine 3A 6 Nov 2017 Ethylamine hydrochloride 3A – Nov 2017 Ethyl 3-phenylpropenoate 64 – Nov 2017 Ethyl 4-aminobenzenecarboxylate 4B – Sept 2016 Ethyl 4-aminobenzoate 4B – Sept 2016 Ethylammonium chloride 3A – Nov 2017 Ethyl benzenecarboxylate 64 – Nov 2017 Ethyl benzoate 64 – Nov 2017 Ethyl bromide 44B – Sept 2016 Ethyl carbamate NR – – Ethyl chloride NR – – Ethyl cinnamate 64 – Nov 2017 Ethyl ethanoate 43A – Sept 2016 di ethyl ether 42 – Sept 2016 Ethyl iodide 44B – Sept 2016 Ethyl methyl ketone 85A – Sept 2016 di ethyl sulfate(VI) NR – – Ethylene 45C – Nov 2018 Ethylenediamine 3B 6 Nov 2017 Ethylene diamine tetraacetic acid (EDTA) 3C – Sept 2016 Ethylene dibromide NR, 103B – Sept 2016 Ethylene dichloride NR, 103B – Sept 2016 Ethylene glycol 37A – Sept 2016 tri ethylene glycol 37A – Sept 2016 Ethyne 45C – Nov 2018 Fehling’s solution – 40 – Ferric alum 55C 52 Nov 2018 Ferric chloride (anhydrous, hydrated) 55C 52 Nov 2018 Ferric nitrate (hydrated) 55C 52 Nov 2018 Ferric oxide 55A – Sept 2016 Ferric sulfate (hydrated) 55C 52 Nov 2018 Ferrosoferric oxide 55A – Sept 2016 Ferrous ammonium sulfate 55B 51 Sept 2016 Ferrous chloride (anhydrous, hydrated) 55B 51 Sept 2016 Ferrous sulfate (hydrated/heptahydrate) 55B – Sept 2016 Ferrous sulfide 55A – Sept 2016 Ferroxyl indicator – 101 – Field’s metal 73D – Sept 2016 Fixatives – 41 – Fluorescein 32 – Sept 2016 Fluorine NR – – Fluorite 19A – Sept 2016 Fluorspar 19A – Sept 2016 Fool’s gold 55A – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 15 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Formaldehyde 63 58 Sept 2016 Formalin 63 41, 58 Sept 2016 Formic acid 38A 59 Nov 2018 Freezing mixtures – – – D- Fructose 40C – Sept 2016 Fruit sugar 40C – Sept 2016 Fumaric acid 36B – Sept 2016 Fuming nitric acid 67 – Nov 2017 Functional group, organic: tests for – 102 – D- Galactose 40C – Sept 2016 Galena 56 – Sept 2016

Gas preparations (CO, HCl, H2S, N2, N2O, NO, NO2) – 42 – Gases, tests for – 99 – Gatenby’s fluid – – – Gentian violet 32 – Sept 2016 Gibberellic acid 38D – Sept 2016 Glass (making) – – – Glass pigment (nickel(II) oxide) NR, 65A – Sept 2016 Glauber’s salt 98B – Sept 2016 Glazes (nickel(II) oxide) NR, 65A – Sept 2016 D- Glucose 40C – Sept 2016 Glucose isomerase (see Enzymes) 33 – Sept 2016 D- Glucose-1-phosphate (dipotassium/disodium salt) 40C – Sept 2016 Glycerine 37A – Sept 2016 Glycerol 37A – Sept 2016 Gram’s stain 32 – Sept 2016 Grape sugar 40C – Sept 2016 Graphite 21 – Nov 2018 Grignard reagents – – – Gun-cotton – – – Refer to SRA 14 Gunpowder 82 – Sept 2016 Gypsum 19B – Sept 2016 Haematite 55A – Sept 2016 Halite 47B 82 Nov 2017 Hard water (recipes for) – 104 – Harlow’s solutions – – – Heptan-1-ol 84C – Sept 2016 Heptane 45A – Sept 2016 n- heptane 45A – Sept 2016 Heptanol 84C – Sept 2016 n- heptyl alcohol 84C – Sept 2016 Hex-1-ene 45C – Nov 2018 Hexadecan-1-ol 84C – Sept 2016 Hexadecanoic acid 38B – Sept 2016 Hexamethylene – – – Hexamethylenediamine 3B 62 Nov 2017 Hexamethylenetetramine 3C – Sept 2016 Hexamine 3C – Sept 2016 Hexan-1-ol 84C – Sept 2016 Hexane 45A – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 16 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated n- hexane 45A – Sept 2016 Hexane-1,6-diamine 3B 62 Nov 2017 Hexanedioyl chloride 41 – Nov 2017 Hexanoic acid 38B – Sept 2016 Hexanol 84C – Sept 2016 Hex-1-ene 45C – Nov 2018 Hexene 45C – Nov 2018 n- hexoic acid 38B – Sept 2016 n- hexyl alcohol 84C – Sept 2016 n- hexylene 45C – Nov 2018 HHSNNA 32 – Sept 2016 Hormone rooting powders / gels 38D – Sept 2016 Hydrazine hydrate and its salts NR, 53 – Sept 2016 Hydriodic acid 47C – Sept 2016 Hydrobromic acid 47C – Sept 2016 Hydrocarbons (see under specific names) – – – Hydrochloric acid 47A 43 Sept 2016 Hydrofluoric acid NR – – Hydrogen 48 44 Sept 2016 Hydrogen bromide 49 – Sept 2016 Hydrogen chloride 49 – Sept 2016 Hydrogen cyanide NR – – Hydrogen iodide 49 – Sept 2016 Hydrogen peroxide 50 45 Sept 2016 Hydrogen sulfide 51A 42 Sept 2016 Hydroquinone 12A – Sept 2016 Hydroxyammonium chloride 53 – Sept 2016 Hydroxyammonium sulfate(VI) 53 – Sept 2016 1,2-di hydroxyanthraquinone 32 – Sept 2016 hydroxybenzene 70A – Sept 2016 1,2-di hydroxybenzene 12A – Sept 2016 1,3-di hydroxybenzene 12A – Sept 2016 1,4-di hydroxybenzene 12A – Sept 2016 1,2,3-tri hydroxybenzene 12B – Sept 2016 1,3,5-tri hydroxybenzene 12B – Sept 2016 2- hydroxybenzenecarboxylic acid 52 – Sept 2016 2- hydroxybenzoic acid 52 – Sept 2016 2- hydroxybutanedioic acid 36C – Sept 2016 2,3-di hydroxybutanedioic acid 36C – Sept 2016 2,2-di hydroxy-1,3-indanedione 66 13 Sept 2016 Hydroxylamine hydrochloride 53 – Sept 2016 Hydroxylammonium chloride 53 – Sept 2016 Hydroxylammonium sulfate 53 – Sept 2016 2- hydroxypropane-1,2,3-tricarboxylic acid 36C 28 Sept 2016 2- hydroxypropanoic acid 38D – Sept 2016 2- hydroxysuccinic acid 36C – Sept 2016 Hypo 95A 87 Sept 2016 IAA 38D – Sept 2016 IBA 38D – Sept 2016 IDA 40A 2 Nov 2018 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 17 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Imidole 4C – Sept 2016 IMS 40A 2 Nov 2018 1,2,3- indanetrione hydrate 66 13 Sept 2016 Indicators 32 46-49 Sept 2016 Indigo 32 – Sept 2016 Indigo carmine 32 – Sept 2016 Indol-3-ylbutanoic acid 38D – Sept 2016 Indol-3-ylethanoic acid 38D – Sept 2016 Indoleacetic acid 38D – Sept 2016 Indolebutyric acid 38D – Sept 2016 Indolylacetic acid 38D – Sept 2016 Indolylbutyric acid 38D – Sept 2016 Industrial denatured alcohol 40A 2 Nov 2018 Industrial methylated spirits 40A 2 Nov 2018 Invertase (see Enzymes) 33 – Sept 2016 Iodine 54 – Sept 2016 Iodine solution 54 50 Sept 2016 1- iodobutane 44B – Sept 2016 Iodoethane 44B – Sept 2016 Iodoform 104 102 Sept 2016 tri iodomethane 104 – Sept 2016 Iodomethane NR – – 1- iodopropane 44B – Sept 2016 Ions, tests for – 100, 101 – exchange resins 71 – Sept 2016 Iron alum 55C 52 Nov 2018 Iron metal (various forms) 55A – Sept 2016 Iron(II) ammonium sulfate(VI) 55B 51 Sept 2016 Iron(II) carbonate saccharated 55A – Sept 2016 Iron(II) chloride (anhydrous) 55B – Sept 2016 Iron(II) chloride-4-water 55B 51 Sept 2016 Iron(II) disulfide 55A – Sept 2016 Iron(II) iron(III) oxide 55A – Sept 2016 Iron(II) sulfate(VI)-7-water 55B 51 Sept 2016 Iron(II) sulfide 55A – Sept 2016 Iron(III) ammonium sulfate(VI) (hydrated) 55C 52 Nov 2018 Iron(III) chloride (anhydrous) 55C – Nov 2018 Iron(III) chloride-6-water 55C 52 Nov 2018 Iron(III) nitrate(V)-9-water 55C 52 Nov 2018 Iron(III) oxide 55A – Sept 2016 Iron(III) sulfate(VI)-9-water 55C 52 Nov 2018 Janus green 32 13 Sept 2016 Kaowool (mineral wool/ceramic wool) 86A – Sept 2016 Kerosene (or kerosine) 45B – Sept 2016 Ketones (see under specific names) – – – Knop’s culture solutions (for plants) – 66 – Lactase (see Enzymes) 33 – Sept 2016 Lactic acid 38D – Sept 2016 D- Lactose 40C – Sept 2016 Lactozym (see Enzymes) 33 – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 18 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Laevulose 40C – Sept 2016 Lamp black 21 – Nov 2018 Laughing gas 68B 42 Nov 2018 Lauric acid 38B – Sept 2016 Lauroyl peroxide 29 – Sept 2016 di lauroyl peroxide 29 – Sept 2016 Lead (metal) 56 – Sept 2016 Lead acetate, hydrated 57B – Sept 2016 Lead alkyls NR – – Lead dibromide 57A – Sept 2016 Lead dichloride 57A – Sept 2016 Lead diiodide 57A – Sept 2016 Lead dinitrate 57A 53 Sept 2016 Lead dioxide 56 – Sept 2016 Lead monoxide 56 – Sept 2016 Lead(II) bromide 57A – Sept 2016 Lead(II) carbonate 56 – Sept 2016 Lead(II) carbonate hydroxide (basic) 56 – Sept 2016 Lead(II) chloride 57A – Sept 2016 Lead(II) chromate(VI) 57B – Sept 2016 Lead(II) ethanoate-3-water 57B – Sept 2016 Lead(II) iodide 57A – Sept 2016 di- lead(II) lead(IV) oxide 56 – Sept 2016 Lead(II) nitrate(V) 57A 53 Sept 2016 Lead(II) oxide 56 – Sept 2016 Lead(II) sulfate(VI) 57A – Sept 2016 Lead(II) sulfide 56 – Sept 2016 Lead(IV) chloride – – – Lead(IV) oxide 56 – Sept 2016 Limestone 19B – Sept 2016 Limewater 18 20 Nov 2018 Limonene 45C – Nov 2018 Lipase (see Enzymes) 33 – Sept 2016 Lipolase (see Enzymes) 33 – Sept 2016 Liquid crystals – – – Liquid glass 95B 86 Sept 2016 Liquid nitrogen 68A – Sept 2016 Liquid paraffin 45B – Sept 2016 Liquid petroleum gas 45A – Sept 2016 Litharge 56 – Sept 2016 Lithium 58A – Nov 2018 Lithium aluminium hydride NR – – Lithium carbonate 58B – Sept 2016 Lithium chloride 47B 54 Nov 2017 Lithium hydroxide (anhydrous & monohydrate) 91B – Sept 2016 Lithium nitrate(V) 58B – Sept 2016 Lithium tetrahydridoaluminate NR – – Litmus 32 – Sept 2016 Liver, source of catalase (see Enzymes) 33 – Sept 2016 Locating agents (chromatography) – 26 – © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 19 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated LPG 45A – Sept 2016 Lucas reagent – 102 – Luminol 4B 23 Sept 2016 Macerating solution (for woody tissue) – – – Magenta 32 – Sept 2016 Magnesia 59B – Sept 2016 Magnesium metal (various forms) 59A – Sept 2016 Magnesium carbonate, basic 59B – Sept 2016 Magnesium carbonate hydroxide 59B – Sept 2016 Magnesium chlorate(VII) NR, 59B – Sept 2016 Magnesium chloride-6-water 59B – Sept 2016 Magnesium hydroxide 59B – Sept 2016 Magnesium nitrate(V)-6-water 59B – Sept 2016 Magnesium oxide 59B – Sept 2016 Magnesium perchlorate NR, 59B – Sept 2016 Magnesium sulfate(VI) 59B 55 Sept 2016 Magnesium sulfate(VI)-7-water 59B 55 Sept 2016 Magnetite 55A – Sept 2016 Malachite 26 – Sept 2016 Malachite green 32 – Sept 2016 Maleic acid 36B – Sept 2016 Malic acid 36C – Sept 2016 Malonic acid 36B – Sept 2016 D- Maltose (malt sugar) 40C – Sept 2016 Manganese 60 – Nov 2018 Manganese carbonate 60 – Nov 2018 Manganese dioxide 60 – Nov 2018 Manganese(II) chloride-4-water 60 – Nov 2018 Manganese(II) sulfate(VI)-1-water 60 56 Nov 2018 Manganese(IV) oxide 60 – Nov 2018 Manometers, mercury 61 – Sept 2016 Marble chips 19B – Sept 2016 Marquis’s reagent – 13 – Marsh gas 45A – Sept 2016 Massicot 56 – Sept 2016 Maxiren (see Enzymes) 33 – Sept 2016 May-Grunwald stain 32 – Sept 2016 Medicinal paraffin 45B – Sept 2016 MEK 85A – Sept 2016 Mercuric chloride 62 – Sept 2016 Mercuric sulfide 62 – Sept 2016 Mercuric salts 62 – Sept 2016 Mercurous chloride 62 – Sept 2016 Mercurous salts 62 – Sept 2016 Mercury 61 – Sept 2016 Mercury alkyls NR – Sept 2016 Mercury compounds 62 – Sept 2016 Mercury(I) chloride 62 – Sept 2016 Mercury(II) chloride 62 57 Sept 2016 Mercury dichloride 62 57 Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 20 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Mercury(II) sulfide 62 – Sept 2016 Metaldehyde (fuel) 34 – Sept 2016 Methanal 63 58 Sept 2016 Methane 45A – Sept 2016 Methanoic acid 38A 59 Nov 2018 Methanol 40B 2 Nov 2018 Methenamine 3C – Sept 2016 Methoxybenzene 42 – Sept 2016 3,3'-di methoxybiphenyl-4,4'-diamine B – – Methylamine 3A 6 Nov 2017 Methylamine hydrochloride 3A – Nov 2017 Methyl 2-hydroxybenzenecarboxylate 52 – Sept 2016 Methyl 2-hydroxybenzoate 52 – Sept 2016 Methyl 2-methylpropenoate 43B – Sept 2016 Methyl 3-nitrobenzenecarboxylate 64 – Nov 2017 Methyl 3-nitrobenzoate 64 – Nov 2017 Methyl 4-hydroxybenzenecarboxylate 52 35 Sept 2016 Methyl 4-hydroxybenzoate 52 35 Sept 2016 Methyl acetate 43A – Sept 2016 Methyl alcohol 40B 2 Nov 2018 Methylammonium chloride 3A – Nov 2017 Methyl benzenecarboxylate 64 – Nov 2017 Methyl benzoate 64 – Nov 2017 Methyl blue 32 – Sept 2016 Methyl chloroform B, 103A – Sept 2016 Methyl ethanoate 43A – Sept 2016 Methyl ethyl ketone 85A – Sept 2016 Methyl green 32 – Sept 2016 Methyl methacrylate 43B – Sept 2016 Methyl orange 32 9, 46 Sept 2016 Methyl paraben 52 35 Sept 2016 Methyl phenyl ether 42 – Sept 2016 Methyl red 32 – Sept 2016 Methyl salicylate 52 – Sept 2016 di methyl sulfate(VI) NR – – Methyl violet 32 – Sept 2016 N,N-di methylaniline 4A – Sept 2016 Methylbenzene 46A – Sept 2016 di methylbenzene (all isomers) 46A – Sept 2016 3,3'-di methylbiphenyl-4,4'-diamine B – – 3- methylbutan-1-ol 84C – Sept 2016 3- methylbutyl ethanoate 43A – Sept 2016 Methylene blue 32 13 Sept 2016 Methylene (di)chloride 28 – Nov 2018 di methylglyoxime 53 – Sept 2016 4- methylpentan-2-one 85A – Sept 2016 Methylphenols (2-, 3-, 4-) 70A – Sept 2016 N,N-di methylphenylamine 4A – Sept 2016 2- methylpropan-1-ol 84B – Sept 2016 2- methylpropan-2-ol 84B – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 21 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Microcosmic salt 72 – Sept 2016 Milk sugar 40C – Sept 2016 Millon’s reagent – 13 – Mineral oil 45B – Sept 2016 Mineral wool 86A – Sept 2016 Mineralised methylated spirits 40A – Nov 2018 Mohr’s salt 55B 51 Sept 2016 Molisch’s solution (test for carbohydrate) – 13 – Monochloroethanoic (or acetic) acid 38C – Sept 2016 Mortar 18 – Nov 2018 Motor oils, unused 46A – Sept 2016 Mountants and stains (see Recipes) 32 various Sept 2016 32 – Sept 2016 Muriate of potash 47B 68 Nov 2017 Nansa acid 31 – Sept 2016 Naphthalen-1-amine B – – Naphthalen-2-amine B – – Naphthalen-1-ol 70B – Sept 2016 Naphthalen-2-ol 70B – Sept 2016 Naphthalene 46B – Sept 2016 Naphthols 70B – Sept 2016 1- naphthylamine B – – 2- naphthylamine B – – Natural gas 45A – Sept 2016 Natural red 4 32 – Sept 2016 Navashin’s fluid NR – – Nessler’s reagent NR – – Neutral red 32 – Sept 2016 Neutrase (see Enzymes) 33 – Sept 2016 NiCad batteries 61 – Sept 2016 Nickel 65A – Sept 2016 Nickel(II) ammonium sulfate(VI)-6-water NR, 65B – Nov 2018 Nickel(II) carbonate (basic) NR, 65A – Sept 2016 Nickel(II) chloride-6-water NR, 65B 60 Nov 2018 Nickel(II) nitrate(V)-6-water NR, 65B – Nov 2018 Nickel(II) oxide NR, 65A – Sept 2016 Nickel(II) sulfate(VI)-6-water (and -7-water) NR, 65B 60 Nov 2018 Nicotine NR, 3D – Nov 2018 Nightlights (see paraffin wax) 45B – Sept 2016 Nigrosin 32 – Sept 2016 Ninhydrin (and ninhydrin spray) 66 13 Sept 2016 Nipagin 52 35 Sept 2016 Nital (etching solution) NR, 67 – Nov 2017 Nitric(V) acid 67 61 Nov 2017 Nitric(V) acid, fuming 67 – Nov 2017 Nitric oxide 68B 42 Nov 2018 Nitrobenzene NR – – 3- nitrobenzenecarboxylic acid 13C – Sept 2016 3- nitrobenzoic acid 13C – Sept 2016 2,4-di nitrobromobenzene NR – – © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 22 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated 2,4-di nitrochlorobenzene NR – – 2,4-di nitrofluorobenzene NR – – Nitrocellulose – – – See SRA 14 Nitrogen (gas and liquid) 68A 42 Sept 2016 Nitrogen dioxide 68B 42 Nov 2018 Nitrogen monoxide 68B 42 Nov 2018 di nitrogen monoxide 68B 42 Nov 2018 Nitrogen peroxide 68B 42 Nov 2018 di nitrogen tetroxide 68B – Nov 2018 Nitrogen triiodide – – – See SRA 15 Nitromethylbenzenes NR – – Nitronaphthalenes B – – 2,4,6-tri nitrophenol NR, 70A – Sept 2016 2,4-di nitrophenylhydrazine 30 33 Nov 2017 Nitrosoamines B – – Nitrosonaphthalenes B – – Nitrosophenols B / NR – – Nitrotoluenes NR – – Nitrous oxide 68B 42 Nov 2018 n- Nonane (follow guidance as for paraffin/kerosene) 45B – Sept 2016 Novoshape (see Enzymes) 33 – Sept 2016 Nylon (solutions for preparation of) – 62 – Oct-1-ene 45C – Nov 2018 cis- octadec-9-enoic acid 38B – Sept 2016 Octadecan-1-ol – – – Octadecanoic acid 38B – Sept 2016 Octamethylcyclopentasiloxane 106 – Nov 2017 Octamethylcyclotetrasiloxane 106 – Nov 2017 n- Octane (follow guidance as for heptane) 45A – Sept 2016 Octan-1-ol 84C – Sept 2016 Octan-2-ol 84C – Sept 2016 Octanol 84C – Sept 2016 1- octene 45C – Nov 2018 iso- octyl alcohol 84C – Sept 2016 n- octyl alcohol 84C – Sept 2016 sec- octyl alcohol 84C – Sept 2016 Oil of wintergreen 52 – Sept 2016 Oil, for heating baths (eg, for melting points) 45B – Sept 2016 Oleic acid 38B – Sept 2016 Oleum NR, 98A – – Opresol 37B – Sept 2016 Orcein 32 – Sept 2016 Organic functional groups, tests for – 102 – Organic peroxides 29 – Sept 2016 Orthophosphoric acid 72 65 Sept 2016 Oscillating reaction mixtures – 63 – Osmic acid NR – – Osmium(VIII) oxide NR – – Oxalic acid 36A – Sept 2016 Oxygen 69 64 Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 23 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Palmitic acid 38B – Sept 2016 Palmityl alcohol 84C – Sept 2016 Pancreatin (see Enzymes) 33 – Sept 2016 Paraffin 45B – Sept 2016 Paraffin liquid (light/heavy/medicinal) 45B – Sept 2016 Paraffin oil 45B – Sept 2016 Paraffin wax 45B – Sept 2016 Paraffin, liquid / medicinal 45B – Sept 2016 Patton and Reeder’s indicator 32 – Sept 2016 Pectinase (see Enzymes) 33 – Sept 2016 Pectinesterase (see Enzymes) 33 – Sept 2016 Pectinex (see Enzymes) 33 – Sept 2016 Pentan-1-ol 84C – Sept 2016 Pentane 45A – Sept 2016 n- pentane 45A – Sept 2016 Pentanoic acid 38B – Sept 2016 Pentanol 84C – Sept 2016 D-(+)-di pentene 45C – Nov 2018 Pentyl acetate 43A – Sept 2016 Pentyl ethanoate 43A – Sept 2016 Pepsin (see Enzymes) 33 – Sept 2016 Perchloric acid NR – – Perchloroethylene 99 – Nov 2018 Per-iodic acid/Schiff (PAS) reaction – 13 – Peroxides, organic 29 – Sept 2016 Perspex (cement, adhesive) – – – Refer to MRATs Petrol NR – – Petroleum ether / spirits 45A – Sept 2016 Petroleum jelly (petrolatum) 45B – Sept 2016 pH buffers – 18 – Phenol 70A – Sept 2016 Phenol red 32 – Sept 2016 Phenol-indo-2,6-dichlorophenol 32 13 Sept 2016 Phenolphthalein 32 46 Sept 2016 Phenoxetol 37B – Sept 2016 2- phenoxyethanol 37B – Sept 2016 Phenoxytol 37B – Sept 2016 Phenyl amides – – – Phenyl benzenecarboxylate 64 – Nov 2017 Phenyl benzoate 64 – Nov 2017 Phenyl bromide 23 – Nov 2018 Phenyl chloride 23 – Nov 2018 Phenyl cyanide 13A – Sept 2016 Phenyl salicylate 52 – Sept 2016 Phenyl-2-hydroxybenzenecarboxylate 52 – Sept 2016 Phenyl-2-hydroxybenzoate 52 – Sept 2016 Phenylacetylene 71 – Sept 2016 Phenylamine (and its salts) 4A – Sept 2016 di phenylamine 4A – Sept 2016 di phenylamine indicator (dichromate titration) – 49 – © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 24 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated di phenylamine-4-sulfonic acid, barium salt 10B 49 Sept 2016 Phenylammonium chloride 4A – Sept 2016 N- phenylbenzenamine 4A – Sept 2016 N- phenylethanamide 35A – Sept 2016 Phenylethanone 85B – Nov 2017 Phenylethene 71 – Sept 2016 Phenylethyne 71 – Sept 2016 Phenylhydrazine NR, 30 – Nov 2017 Phenylmethanol 40B – Nov 2018 di phenylmethanone 85B – Nov 2017 2,3,5-tri phenyltetrazolium chloride 4C 13 Sept 2016 Phenylthiocarbamide 35B 13 Sept 2016 di phenylthiocarbazone 32 – Sept 2016 N- phenylthiourea 35B 13 Sept 2016 Philosopher’s wool (see zinc oxide) 108B – Sept 2016 Phloroglucinol 12B – Sept 2016 Phosgene NR – – di phosphine – – – Phosphoric(V) acid (and its salts) 72 65 Sept 2016 (white, yellow) 73A – Sept 2016 Phosphorus (red) 73B – Sept 2016 Phosphorus pentachloride 74 – Sept 2016 di phosphorus pentoxide 75 – Sept 2016 Phosphorus pentoxide 75 – Sept 2016 Phosphorus trichloride 74 – Sept 2016 Phosphorus(III) chloride 74 – Sept 2016 Phosphorus(V) chloride 74 – Sept 2016 Phosphorus(V) oxide 75 – Sept 2016 Phosphorylase (see Enzymes) 33 – Sept 2016 Phthalic acid 13B – Sept 2016 Phthalic anhydride 13B – Sept 2016 Picric acid NR, 70A – Sept 2016 PIDCP 32 – Sept 2016 Plant hormones 38D – Sept 2016 Plant mineral requirement solutions – 66 – Plaster of Paris 19B – Sept 2016 Plastics 71 – Sept 2016 See also MRATs Polymers 71 – Sept 2016 See also MRATs Polyols 37A – Sept 2016 Polyphenylethene 71 – Sept 2016 Polystyrene 71 – Sept 2016 Potash alum 2B 4 Nov 2017 Potassium 76 – Nov 2018 Potassium aluminium sulfate(VI) 2B 4 Nov 2017 Potassium amide NR – – Potassium bicarbonate 95A – Sept 2016 Potassium bisethanedioate 36A – Sept 2016 Potassium bisulfite 92 – Sept 2016 Potassium bromate(V) 80 – Sept 2016 Potassium bromide 47B 68 Nov 2017 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 25 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Potassium carbonate 95A – Sept 2016 (V) 77 – Sept 2016 Potassium chlorate(VII) 77 – Sept 2016 Potassium chloride 47B 68 Nov 2017 Potassium chromate(VI) 78A 69 Sept 2016 Potassium chromium(III) sulfate(VI) 24 – Sept 2016 Potassium cyanide NR, 95C – Nov 2018 Potassium dichromate(VI) 78C 70 Nov 2017 Potassium dihydrogenphosphate(V) 72 18, 67 Sept 2016 Potassium dioxide 94 – Sept 2016 di potassium disulfate(IV) 92 – Sept 2016 Potassium disulfite 92 – Sept 2016 Potassium ethanedioate(-1-water) 36A – Sept 2016 Potassium ferricyanide 79 – Nov 2017 Potassium ferrocyanide 79 – Nov 2017 Potassium fluoride 95C – Nov 2018 Potassium hexacyanoferrate(II)-3-water 79 – Nov 2017 Potassium hexacyanoferrate(III) 79 – Nov 2017 Potassium hydrogen-benzene-1,2-dicarboxylate 13B – Sept 2016 Potassium hydrogen-benzene-1,2-dioate 13B – Sept 2016 Potassium hydrogencarbonate 95A – Sept 2016 Potassium hydrogenethanedioate 36A – Sept 2016 Potassium hydrogenethanedioate-1- 36A – Sept 2016 ethanedioic acid-2-water Potassium hydrogen oxalate 36A – Sept 2016 Potassium hydrogen phthalate 13B – Sept 2016 di potassium hydrogenphosphate(V) 72 18, 67 Sept 2016 Potassium hydrogensulfate(IV) 92 – Sept 2016 Potassium hydrogensulfite 92 – Sept 2016 Potassium hydroxide 91B 71 Sept 2016 Potassium iodate(V) 80 – Sept 2016 Potassium iodate(VII) 80 – Sept 2016 Potassium iodide 47B 72 Nov 2017 Potassium manganate(VII) 81 73 Sept 2016 Potassium metabisulfite 92 – Sept 2016 Potassium nitrate(III) 93 – Sept 2016 Potassium nitrate(V) 82 – Sept 2016 Potassium nitrite 93 – Sept 2016 tri potassium orthophosphate 72 18, 67 Sept 2016 Potassium oxalate 36A – Sept 2016 Potassium perchlorate 77 – Sept 2016 Potassium periodate 80 – Sept 2016 Potassium permanganate 81 73 Sept 2016 di potassium peroxodisulfate(VI) 95B – Sept 2016 Potassium persulfate 95B – Sept 2016 Potassium phosphate(V) 72 18, 67 Sept 2016 Potassium sodium 2,3-dihydroxybutanedioate 36C – Sept 2016 Potassium sodium tartrate 36C – Sept 2016 Potassium sulfate(IV) (potassium sulfite) 92 – Sept 2016 Potassium sulfate(VI) (potassium sulfate) 98B – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 26 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Potassium sulfide 51B – Sept 2016 Potassium sulfite 92 – Sept 2016 Potassium superoxide 94 – Sept 2016 Potassium tetroxalate 36A – Sept 2016 Potassium thiocyanate 95A – Sept 2016 Presept 89 – Sept 2016 Preservatives and fixatives – 41, 74 – Procion dyes 32 – Sept 2016 Propan-1-ol 84A – Sept 2016 Propan-2-ol 84A – Sept 2016 Propanal 83 – Sept 2016 Propane 45A – Sept 2016 Propane-1,2,3-triol (1,2,3-propanetriol) 37A – Sept 2016 Propane-1,2-diol (1,2-propanediol) 37A – Sept 2016 Propane-1,3-diol (1,3-propanediol) 37A – Sept 2016 Propanedioic acid 36B – Sept 2016 Propanoic acid 38B – Sept 2016 iso- propanol 84A – Sept 2016 n- propanol 84A – Sept 2016 Propanone 85A 2 Sept 2016 Propenamide NR, 35B – Sept 2016 Propene 45C – Nov 2018 Propionaldehyde 83 – Sept 2016 Propionic acid 38B – Sept 2016 n- propyl acetate 43A – Sept 2016 iso propyl alcohol 84A – Sept 2016 Propyl alcohol 84A – Sept 2016 n- propyl chloride 44A – Sept 2016 Propyl ethanoate 43A – Sept 2016 n- propyl iodide 44B – Sept 2016 Propylene 45C – Nov 2018 Propylene glycol 37A – Sept 2016 Propylene phenoxetol 37B – Sept 2016 Propylene phenoxytol 37B – Sept 2016 Protactinium generators 105 – Sept 2016 See Guide L 93 Protease (see Enzymes) 33 – Sept 2016 PTC / PTU 35B 13 Sept 2016 Purple meths 40A – Nov 2018 Pyridine 4C – Sept 2016 Pyrites (iron pyrite) 55A – Sept 2016 Pyrocatechol 12A – Sept 2016 Pyrogallol 12B 84 Sept 2016 Pyrolusite 60 – Nov 2018 Pyronin 32 – Sept 2016 Pyroxylin (see nitrocellulose/gun cotton) – – – Pyrrole 4C – Sept 2016 Quicklime 18 – Nov 2018 Quinol 12A – Sept 2016 Radioactive compounds – – – See Guide L 93 Radon, Radon-220 generators – – – See Guide L 93 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 27 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Red lead 56 – Sept 2016 Red phosphorus 73B – Sept 2016 Rennilase (see Enzymes) 33 – Sept 2016 Rennin / rennet (see Enzymes) 33 – Sept 2016 Resazurin 32 – Sept 2016 Resins – – – See MRATs Resorcinol 12A – Sept 2016 Rhodizonic acid 32 – Sept 2016 Ringer’s solutions (physiological use) – 75 – Rochelle salt 36C – Sept 2016 Rock salt 47B 82 Nov 2017 Rocksil (see mineral wool/ceramic wool) 86A – Sept 2016 Rooting powders / gels 38D – Sept 2016 Rosaniline 32 – Sept 2016 Rubeanic acid 35A – Sept 2016 Rubidium chloride 47B – Nov 2017 Sach’s culture solutions (for plants) – 66 – Safranin 32 – Sept 2016 Sakaguchi test – 13 – Sal ammoniac 9A 7 Sept 2016 Salicylic acid 52 – Sept 2016 Saline solutions (physiological use) – 75 – Saliva, source of amylase (see Enzymes) 33 – Sept 2016 Salol 52 – Sept 2016 Sal volatile (‘salt of hartshorn’) 9A Sept 2016 Sand 86A – Sept 2016 Sandell’s solution – 76 – Schiff’s reagent – 102 – Schulze’s solution – 93 – Sea water (recipe) – 104 – Sebacoyl chloride 41 Nov 2017 Selenium and its compounds NR – – Silica 86A – Sept 2016 Silica gel 86A – Sept 2016 Silicon 86A – Sept 2016 Silicon(IV) chloride 86B – Sept 2016 Silicon(IV) oxide 86A – Sept 2016 Silicon tetrachloride 86B – Sept 2016 Silver 87 – Nov 2018 Silver bromide 87 – Nov 2018 Silver chloride 87 – Nov 2018 Silver iodide 87 – Nov 2018 Silver nitrate(V) 87 77 Nov 2018 Silver nitrate(V), ammoniacal (Tollen’s reagent) 87 77, 102 Nov 2018 Slaked lime 18 – Nov 2018 ‘Slime’ and ‘silly putty’ 14A 78 Sept 2016 Smelling salts 9A – Sept 2016 Soap 95A – Sept 2016 Soap solutions – 79 – Soda lime 91A – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 28 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Sodamide NR – Sodium 88 – Nov 2018 Sodium acetate (anhydrous,hydrated) 38A 83 Nov 2018 Sodium alginate 95A 3 Sept 2016 Sodium amide NR – – Sodium azide NR, 95C – Nov 2018 Sodium bicarbonate 95A 84 Sept 2016 Sodium bismuthate(V) 95A – Sept 2016 Sodium bisulfate (anhydrous, hydrated) 98B – Sept 2016 Sodium bisulfite 92 – Sept 2016 Sodium borohydride 14B – Sept 2016 Sodium bromide 47B 82 Nov 2017 Sodium carbonate (anhydrous, hydrated) 95A 80 Sept 2016 Sodium carbonate-10-water 95A 80 Sept 2016 Sodium carbonate-hydrogencarbonate 95A – Sept 2016 (I) (i.e. sodium hypochlorite) 89 81 Sept 2016 Sodium chlorate(V) 77 – Sept 2016 Sodium chloride 47B 82 Nov 2017 Sodium chromate(VI) 78B – Sept 2016 Sodium citrate(-2-water) 36C – Sept 2016 Sodium cobaltinitrite 95B – Sept 2016 Sodium cyanide NR, 95C – Nov 2018 Sodium dichloroisocyanurate 89 – Sept 2016 Sodium dichromate(VI) (anhydrous) 78C 70 Nov 2017 Sodium dichromate(VI)-2-water 78C 70 Nov 2017 Sodium dihydrogenphosphate(V)-2-water 72 18, 67 Sept 2016 di sodium disulfate(IV) 92 97 Sept 2016 Sodium disulfite 92 97 Sept 2016 Sodium dithionite 90 – Sept 2016 Sodium dodecyl sulfate(VI) 95B – Sept 2016 Sodium ethanedioate 36A – Sept 2016 Sodium ethanoate (anhydrous, hydrated) 38A 83 Nov 2018 Sodium ethanoate(-3-water) 38A 83 Nov 2018 Sodium fluoride 95C – Nov 2018 Sodium formate 38A – Nov 2018 Sodium hexanitrocobaltate(III) 95B – Sept 2016 di sodium hydrogen orthophosphate 72 18, 67 Sept 2016 Sodium hydrogencarbonate 95A 84 Sept 2016 di sodium hydrogenphosphate(V) 72 18, 67 Sept 2016 Sodium hydrogensulfate(IV) 92 – Sept 2016 Sodium hydrogensulfate(VI) (hydrated/anhyd) 98B – Sept 2016 Sodium hydrogensulfite 92 – Sept 2016 Sodium hydrosulfite 90 – Sept 2016 Sodium hydroxide 91A 85 Sept 2016 Sodium hypochlorite 89 81 Sept 2016 Sodium iodide 47B 72 Nov 2017 Sodium lauryl sulfate 95B – Sept 2016 Sodium metabisulfite 92 97 Sept 2016 Sodium methanoate 38A – Nov 2018 Sodium nitrate(III) 93 – Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 29 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Sodium nitrate(V) 82 – Sept 2016 Sodium nitrite 93 – Sept 2016 Sodium octadec-9-enoate 95A – Sept 2016 Sodium octadecanoate 95A – Sept 2016 Sodium oleate 95A – Sept 2016 Sodium orthophosphate dodecahydrate 72 18, 67 Sept 2016 Sodium oxalate 36A – Sept 2016 Sodium perborate 14A – Sept 2016 Sodium peroxide 94 – Sept 2016 Sodium peroxoborate 14A – Sept 2016 di sodium peroxodisulfate(VI) 95B – Sept 2016 Sodium persulfate 95B – Sept 2016 Sodium phosphate(V)-12-water 72 18, 67 Sept 2016 Sodium potassium tartrate (see Rochelle Salt) 36C – Sept 2016 Sodium sesquicarbonate 95A – Sept 2016 Sodium silicate (solution) 95B 86 Sept 2016 Sodium stearate 95A – Sept 2016 Sodium sulfate(IV) (sodium sulfite) 92 – Sept 2016 Sodium sulfate(VI) (anhydrous, hydrated) 98B – Sept 2016 Sodium sulfate(VI)-10-water 98B – Sept 2016 Sodium sulfide(-9-water) 51B – Sept 2016 Sodium sulfite 92 – Sept 2016 Sodium tauroglycocholate 95A 37 Sept 2016 Sodium tetraborate 14A – Sept 2016 di sodium tetraborate 14A – Sept 2016 Sodium tetrahydridoborate(III) 14B – Sept 2016 Sodium thiocyanate-2-water 95A – Sept 2016 Sodium thiosulfate-5-water 95A 87 Sept 2016 Sodium troclosene 89 – Sept 2016 Solid sulfuric acid (sodium hydrogen sulfate(VI)) 98B – Sept 2016 Solochrome black 32 – Sept 2016 Solvent black 3 32 – Sept 2016 Solvent green 1 32 – Sept 2016 Solvents for chromatography – 26 – Soylent green 32 – Sept 2016 Sphalerite 108B Sept 2016 Spirit blue 32 – Sept 2016 Stains (see Recipes for specific stains) 32 88-93 Sept 2016 Standard solutions (for titrations) – 94 – Stannic chloride (anhydrous, hydrated) 102B – Sept 2016 Stannic iodide 102B – Sept 2016 Stannic oxide (cassiterite) 102B – Sept 2016 Stannous chloride (hydrated) 102A 103 Sept 2016 Stannous oxide 102A – Sept 2016 Stannous sulfate 102A – Sept 2016 Starch 40C – Sept 2016 Stearic acid 38B – Sept 2016 16 – Sept 2016 Strontium chloride-6-water 19A 95 Sept 2016 Strontium chloride, hydrated 19A 95 Sept 2016 © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 30 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Strontium hydroxide(-8-water) 18 – Nov 2018 Strontium hydroxide, hydrated 18 – Nov 2018 Strontium nitrate(V)-4-water 19B – Sept 2016 Styrene 71 – Sept 2016 Succinic acid 36B – Sept 2016 Sucrose 40C – Sept 2016 Sudan dyes 32 – Sept 2016 Sugar (table sugar, cane/beet sugar) 40C – Sept 2016 Sulfamic acid (sulfamidic acid) 98B – Sept 2016 Sulfanilic acid 4B – Sept 2016 Sulfur (various forms, allotropes) 96A – Nov 2017 di sulfur dichloride 96B – Sept 2016 Sulfur dichloride oxide 96B – Sept 2016 Sulfur dioxide 97 96, 97 Nov 2018 Sulfur monochloride 96B – Sept 2016 Sulfuric(VI) acid 98A 98 Sept 2016 Superwool 607 (mineral wool/ceramic wool) 86A – Sept 2016 Surgical spirits 40A – Nov 2018 Synthetic crude oil – 32 – Tartaric acid 36C – Sept 2016 Taste-testing papers (see PTC) 35B – Sept 2016 Tellurium and its compounds NR – – Terephthalic acid 13B – Sept 2016 Termamyl (see Enzymes) 33 – Sept 2016 Test papers, cobalt(II) chloride 25 30 Sept 2016 Test papers, potassium dichromate(VI) 78C 70 Nov 2017 Tests, for gases – 99 – Tests, for negative ions (anions) – 100 – Tests, for positive ions (cations) – 101 – Tests, for organic functional groups – 102 – Tetrachloroethene 99 – Nov 2018 Tetrachloroethylene 99 – Nov 2018 Tetrachloromethane B, 100 – Nov 2018 Tetrazolium chloride 4C 13 Sept 2016 Thallium and its compounds NR – – Thermite reaction mixtures & initiators – – – Thermochromic liquid – 30 – Thermometers 61 – Sept 2016 Thiocyanate indicator, for iron(III) – 101 – Thiokol rubber NR – – Thionyl chloride 96B – Sept 2016 Thiooxamide 35A – Sept 2016 di thioxamide 35A – Sept 2016 Thorium compounds 101 – Sept 2016 See Guide L93 Thoron generators 101 – Sept 2016 See Guide L93 Thymol blue 32 – Sept 2016 Thymolphthalein 32 – Sept 2016 Tin 102A – Sept 2016 Tin(II) chloride-2-water 102A 103 Sept 2016 Tin(II) nitrate(V) NR – – © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 31 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Tin(II) oxide 102A – Sept 2016 Tin(II) sulfate(VI) 102A – Sept 2016 Tin(IV) chloride (anhydrous, hydrated) 102B – Sept 2016 Tin(IV) iodide 102B – Sept 2016 Tin(IV) oxide 102B – Sept 2016 o- tolidine B – – Tollen’s reagent 87 77, 102 Nov 2018 Toluene 46A – Sept 2016 Toluidine blue 32 – Sept 2016 Tolyl chloride 44A – Sept 2016 Triammonium aurine tricarboxylate 32 – Sept 2016 Tribromophenol – – – Trichloroacetic acid 38C – Sept 2016 1,1,1- trichloroethane B, 103A – Sept 2016 Trichloroethanoic acid 38C – Sept 2016 Trichloroethene NR, 99 – Nov 2018 Trichloroethylene NR, 99 – Nov 2018 Trichloromethane NR, 104 – Sept 2016 Trichlorophenol – – – Triethylene glycol (see propane-1,2,3-triol) 37A – Sept 2016 1,2,3- trihydroxybenzene 12B – Sept 2016 1,3,5- trihydroxybenzene 12B – Sept 2016 Triiodomethane 104 102 Sept 2016 2,4,6- trinitrophenol NR, 70A – Sept 2016 2,3,5- triphenyltetrazolium chloride 4C 13 Sept 2016 Tripotassium orthophosphate 72 – Sept 2016 Triton Kaowool (mineral wool/ceramic wool) 86A – Sept 2016 Trypsin (see Enzymes) 33 – Sept 2016 TTC 4C 13 Sept 2016 Turpentine substitute 45B – Sept 2016 Uranium compounds 105 – Sept 2016 See Guide L93 Urea 35A – Sept 2016 Urease (see Enzymes) 33 – Sept 2016 n- valeric acid 38B – Sept 2016 Vaseline/Vaseline oil 45B – Sept 2016 Verdigris 27B – Nov 2017 Vinegar 38A 39 Nov 2018 Vinyl chloride NR – – Viscozyme (see Enzymes) 33 – Sept 2016 Vitamin C 38D – Sept 2016 Volasil 106 – Nov 2017 Washing soda 95A 80 Sept 2016 Water: hard, sea (recipes for) – 102 – Water glass 95B 86 Sept 2016 Water-purification tablets 89 – Sept 2016 Wax, paraffin 45B – Sept 2016 White lead 56 – Sept 2016 White phosphorus 73A – Sept 2016 White spirit 45B – Sept 2016 Wij’s solution – – – © CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 32 Hazcard Index Hazcard Chemical Hazcard Recipe Notes updated Winkler’s method, oxygen analysis – 105 – Wood alcohol (methanol) 40B 2 Nov 2018 Wood’s metal 73D – Sept 2016 Xenylamine B – – Xylenes 46A – Sept 2016 Xylene cyanol FF 32 – Sept 2016 Xylenol orange 32 – Sept 2016 Yeast (see Enzymes) 33 – Sept 2016 Yellow lead 56 – Sept 2016 Yellow phosphorus 73A – Sept 2016 Zinc (metal, various forms) 107 – Sept 2016 Zinc blende 108B – Sept 2016 Zinc bromide 108A – Nov 2017 Zinc carbonate, basic 108B – Sept 2016 Zinc chloride 108A – Nov 2017 Zinc chromate(VI) NR, 108A – Nov 2017 Zinc nitrate(V)-6-water 108A – Nov 2017 Zinc oxide 108B – Sept 2016 Zinc sulfate(VI)-7-water 108B 106 Sept 2016 Zinc sulfide 108B Sept 2016 Zinc white 108B – Sept 2016

© CLEAPSS 2018 Chemicals in bold print are banned (‘B’) or not recommended (‘NR’) for general use in schools 33