UH Chemical Hygiene Plan Appendix
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EPA Method 538: Determination of Selected Organic Contaminants in Drinking Water by Aqueous Direct Injection and LC/MS/MS Summar
EPA Method 538: Determination of Selected Organic Contaminants in Drinking Water by Aqueous Direct Injection and LC/MS/MS UCT Part Numbers: SLAQ100ID21-3UM - Selectra® Aqueous C18, 100 x 2.1mm, 3µm SLAQGDC20-3UM - Selectra® Aqueous C18, Guard column, 10 x 2.0mm, 3µm SLGRDHLDR - Guard Cartridge Holder June 2015 Summary: This application outlines a direct aqueous injection-liquid chromatography/tandem mass spectrometry (DAI-LC/MS/MS) method for the determination of 11 selected organic contaminants in drinking water, including methamidophos, acephate, aldicarb sulfoxide, oxydemeton methyl, dicrotophos, aldicarb, diisopropyl methylphosphonate (DIMP), fenamiphos sulfone, fenamiphos sulfoxide, thiofanox, and quinoline [1]. Dicrotophos, oxydemeton methyl, methamidophos, and acephate are UCMR4 compounds. An Aqueous C18 HPLC column was utilized for analyte retention and separation. Calibration curves were constructed using calibration standards prepared in reagent water with preservative reagents for analyte quantitation. The responses were linear over the entire analytical ranges (R2 ≥ 0.9970). Excellent accuracy (90 - 111%) and precision (RSD% < 20%, n=7) were achieved for fortified reagent water and tap water samples. Procedure: 1. Preserve drinking water sample with 64 mg/L of sodium omadine (antimicrobial) and 1.5 g/L of ammonium acetate (binding free chlorine). 2. Mix 0.99 mL of the preserved water sample with 10 μL of 0.4-12.5 ng/μL internal standard mixture, and vortex for 30 sec. 3. Inject 50 μL onto LC/MS/MS equipped with an aqueous -
Chemical Name Federal P Code CAS Registry Number Acutely
Acutely / Extremely Hazardous Waste List Federal P CAS Registry Acutely / Extremely Chemical Name Code Number Hazardous 4,7-Methano-1H-indene, 1,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro- P059 76-44-8 Acutely Hazardous 6,9-Methano-2,4,3-benzodioxathiepin, 6,7,8,9,10,10- hexachloro-1,5,5a,6,9,9a-hexahydro-, 3-oxide P050 115-29-7 Acutely Hazardous Methanimidamide, N,N-dimethyl-N'-[2-methyl-4-[[(methylamino)carbonyl]oxy]phenyl]- P197 17702-57-7 Acutely Hazardous 1-(o-Chlorophenyl)thiourea P026 5344-82-1 Acutely Hazardous 1-(o-Chlorophenyl)thiourea 5344-82-1 Extremely Hazardous 1,1,1-Trichloro-2, -bis(p-methoxyphenyl)ethane Extremely Hazardous 1,1a,2,2,3,3a,4,5,5,5a,5b,6-Dodecachlorooctahydro-1,3,4-metheno-1H-cyclobuta (cd) pentalene, Dechlorane Extremely Hazardous 1,1a,3,3a,4,5,5,5a,5b,6-Decachloro--octahydro-1,2,4-metheno-2H-cyclobuta (cd) pentalen-2- one, chlorecone Extremely Hazardous 1,1-Dimethylhydrazine 57-14-7 Extremely Hazardous 1,2,3,4,10,10-Hexachloro-6,7-epoxy-1,4,4,4a,5,6,7,8,8a-octahydro-1,4-endo-endo-5,8- dimethanonaph-thalene Extremely Hazardous 1,2,3-Propanetriol, trinitrate P081 55-63-0 Acutely Hazardous 1,2,3-Propanetriol, trinitrate 55-63-0 Extremely Hazardous 1,2,4,5,6,7,8,8-Octachloro-4,7-methano-3a,4,7,7a-tetra- hydro- indane Extremely Hazardous 1,2-Benzenediol, 4-[1-hydroxy-2-(methylamino)ethyl]- 51-43-4 Extremely Hazardous 1,2-Benzenediol, 4-[1-hydroxy-2-(methylamino)ethyl]-, P042 51-43-4 Acutely Hazardous 1,2-Dibromo-3-chloropropane 96-12-8 Extremely Hazardous 1,2-Propylenimine P067 75-55-8 Acutely Hazardous 1,2-Propylenimine 75-55-8 Extremely Hazardous 1,3,4,5,6,7,8,8-Octachloro-1,3,3a,4,7,7a-hexahydro-4,7-methanoisobenzofuran Extremely Hazardous 1,3-Dithiolane-2-carboxaldehyde, 2,4-dimethyl-, O- [(methylamino)-carbonyl]oxime 26419-73-8 Extremely Hazardous 1,3-Dithiolane-2-carboxaldehyde, 2,4-dimethyl-, O- [(methylamino)-carbonyl]oxime. -
Presence and Metabolism of Endogenous Androgenic–Anabolic Steroid Hormones in Meat-Producing Animals: a Review J
Food Additives and Contaminants Vol. 26, No. 5, May 2009, 640–671 Presence and metabolism of endogenous androgenic–anabolic steroid hormones in meat-producing animals: a review J. Scartha*, C. Akreb, L. van Ginkelc, B. Le Bizecd, H. De Brabandere, W. Korthf, J. Pointsg, P. Tealea and J. Kayh aHFL Sport Science (a Quotient Bioresearch Company), Fordham, UK; bCanadian Food Inspection Agency, Saskatoon, Canada; cNational Institute of Public Health and the Environment, RIVM, European Union Community Reference Laboratory for Residues, Bilthoven, the Netherlands; dLABERCA, Ecole Nationale Ve´te´rinaire de Nantes, Nantes, France; eFaculty of Veterinary Medicine, Laboratory of Chemical Analysis, Department of Veterinary Public Health and Food Safety, Ghent University, Merelbeke, Belgium; fNational Residue Survey, Australian Government Department of Agriculture, Fisheries and Forestry, Barton, ACT, Australia; gVeterinary Drugs Group, LGC, Teddington, UK; hVeterinary Medicines Directorate, Addlestone, UK (Received 17 April 2008; final version received 15 November 2008) The presence and metabolism of endogenous steroid hormones in meat-producing animals has been the subject of much research over the past 40 years. While significant data are available, no comprehensive review has yet been performed. Species considered in this review are bovine, porcine, ovine, equine, caprine and cervine, while steroid hormones include the androgenic–anabolic steroids testosterone, nandrolone and boldenone, as well as their precursors and metabolites. Information on endogenous steroid hormone concentrations is primarily useful in two ways: (1) in relation to pathological versus ‘normal’ physiology and (2) in relation to the detection of the illegal abuse of these hormones in residue surveillance programmes. Since the major focus of this review is on the detection of steroids abuse in animal production, the information gathered to date is used to guide future research. -
The List of Extremely Hazardous Substances)
APPENDIX A (THE LIST OF EXTREMELY HAZARDOUS SUBSTANCES) THRESHOLD REPORTABLE INVENTORY RELEASE QUANTITY QUANTITY CAS NUMBER CHEMICAL NAME (POUNDS) (POUNDS) 75-86-5 ACETONE CYANOHYDRIN 500 10 1752-30-3 ACETONE THIOSEMICARBAZIDE 500/500 1,000 107-02-8 ACROLEIN 500 1 79-06-1 ACRYLAMIDE 500/500 5,000 107-13-1 ACRYLONITRILE 500 100 814-68-6 ACRYLYL CHLORIDE 100 100 111-69-3 ADIPONITRILE 500 1,000 116-06-3 ALDICARB 100/500 1 309-00-2 ALDRIN 500/500 1 107-18-6 ALLYL ALCOHOL 500 100 107-11-9 ALLYLAMINE 500 500 20859-73-8 ALUMINUM PHOSPHIDE 500 100 54-62-6 AMINOPTERIN 500/500 500 78-53-5 AMITON 500 500 3734-97-2 AMITON OXALATE 100/500 100 7664-41-7 AMMONIA 500 100 300-62-9 AMPHETAMINE 500 1,000 62-53-3 ANILINE 500 5,000 88-05-1 ANILINE,2,4,6-TRIMETHYL- 500 500 7783-70-2 ANTIMONY PENTAFLUORIDE 500 500 1397-94-0 ANTIMYCIN A 500/500 1,000 86-88-4 ANTU 500/500 100 1303-28-2 ARSENIC PENTOXIDE 100/500 1 THRESHOLD REPORTABLE INVENTORY RELEASE QUANTITY QUANTITY CAS NUMBER CHEMICAL NAME (POUNDS) (POUNDS) 1327-53-3 ARSENOUS OXIDE 100/500 1 7784-34-1 ARSENOUS TRICHLORIDE 500 1 7784-42-1 ARSINE 100 100 2642-71-9 AZINPHOS-ETHYL 100/500 100 86-50-0 AZINPHOS-METHYL 10/500 1 98-87-3 BENZAL CHLORIDE 500 5,000 98-16-8 BENZENAMINE, 3-(TRIFLUOROMETHYL)- 500 500 100-14-1 BENZENE, 1-(CHLOROMETHYL)-4-NITRO- 500/500 500 98-05-5 BENZENEARSONIC ACID 10/500 10 3615-21-2 BENZIMIDAZOLE, 4,5-DICHLORO-2-(TRI- 500/500 500 FLUOROMETHYL)- 98-07-7 BENZOTRICHLORIDE 100 10 100-44-7 BENZYL CHLORIDE 500 100 140-29-4 BENZYL CYANIDE 500 500 15271-41-7 BICYCLO[2.2.1]HEPTANE-2-CARBONITRILE,5- -
Code Chemical P026 1-(O-Chlorophenyl)Thiourea P081 1
Code Chemical P026 1-(o-Chlorophenyl)thiourea P081 1,2,3-Propanetriol, trinitrate (R) P042 1,2-Benzenediol, 4-[1-hydroxy-2-(methylamino)ethyl]-, (R)- P067 1,2-Propylenimine P185 1,3-Dithiolane-2-carboxaldehyde, 2,4-dimethyl-, O- [(methylamino)- carbonyl]oxime 1,4,5,8-Dimethanonaphthalene, 1,2,3,4,10,10-hexa- chloro-1,4,4a,5,8,8a,-hexahydro-, P004 (1alpha,4alpha, 4abeta,5alpha,8alpha,8abeta)- 1,4,5,8-Dimethanonaphthalene, 1,2,3,4,10,10-hexa- chloro-1,4,4a,5,8,8a-hexahydro-, P060 (1alpha,4alpha, 4abeta,5beta,8beta,8abeta)- P002 1-Acetyl-2-thiourea P048 2,4-Dinitrophenol P051 2,7:3,6-Dimethanonaphth [2,3-b]oxirene, 3,4,5,6,9,9 -hexachloro-1a,2,2a,3,6,6a,7,7a- octahydro-, (1aalpha,2beta,2abeta,3alpha,6alpha,6abeta,7 beta, 7aalpha)-, & metabolites 2,7:3,6-Dimethanonaphth[2,3-b]oxirene, 3,4,5,6,9,9- hexachloro-1a,2,2a,3,6,6a,7,7a- P037 octahydro-, (1aalpha,2beta,2aalpha,3beta,6beta,6aalpha,7 beta, 7aalpha)- P045 2-Butanone, 3,3-dimethyl-1-(methylthio)-, O-[methylamino)carbonyl] oxime P034 2-Cyclohexyl-4,6-dinitrophenol 2H-1-Benzopyran-2-one, 4-hydroxy-3-(3-oxo-1- phenylbutyl)-, & salts, when present at P001 concentrations greater than 0.3% P069 2-Methyllactonitrile P017 2-Propanone, 1-bromo- P005 2-Propen-1-ol P003 2-Propenal P102 2-Propyn-1-ol P007 3(2H)-Isoxazolone, 5-(aminomethyl)- P027 3-Chloropropionitrile P047 4,6-Dinitro-o-cresol, & salts P059 4,7-Methano-1H-indene, 1,4,5,6,7,8,8-heptachloro- 3a,4,7,7a-tetrahydro- P008 4-Aminopyridine P008 4-Pyridinamine P007 5-(Aminomethyl)-3-isoxazolol 6,9-Methano-2,4,3-benzodioxathiepin, 6,7,8,9,10,10- -
Jp Xvii the Japanese Pharmacopoeia
JP XVII THE JAPANESE PHARMACOPOEIA SEVENTEENTH EDITION Official from April 1, 2016 English Version THE MINISTRY OF HEALTH, LABOUR AND WELFARE Notice: This English Version of the Japanese Pharmacopoeia is published for the convenience of users unfamiliar with the Japanese language. When and if any discrepancy arises between the Japanese original and its English translation, the former is authentic. The Ministry of Health, Labour and Welfare Ministerial Notification No. 64 Pursuant to Paragraph 1, Article 41 of the Law on Securing Quality, Efficacy and Safety of Products including Pharmaceuticals and Medical Devices (Law No. 145, 1960), the Japanese Pharmacopoeia (Ministerial Notification No. 65, 2011), which has been established as follows*, shall be applied on April 1, 2016. However, in the case of drugs which are listed in the Pharmacopoeia (hereinafter referred to as ``previ- ous Pharmacopoeia'') [limited to those listed in the Japanese Pharmacopoeia whose standards are changed in accordance with this notification (hereinafter referred to as ``new Pharmacopoeia'')] and have been approved as of April 1, 2016 as prescribed under Paragraph 1, Article 14 of the same law [including drugs the Minister of Health, Labour and Welfare specifies (the Ministry of Health and Welfare Ministerial Notification No. 104, 1994) as of March 31, 2016 as those exempted from marketing approval pursuant to Paragraph 1, Article 14 of the Same Law (hereinafter referred to as ``drugs exempted from approval'')], the Name and Standards established in the previous Pharmacopoeia (limited to part of the Name and Standards for the drugs concerned) may be accepted to conform to the Name and Standards established in the new Pharmacopoeia before and on September 30, 2017. -
List of Extremely Hazardous Substances
Emergency Planning and Community Right-to-Know Facility Reporting Compliance Manual List of Extremely Hazardous Substances Threshold Threshold Quantity (TQ) Reportable Planning (pounds) Quantity Quantity (Industry Use (pounds) (pounds) CAS # Chemical Name Only) (Spill/Release) (LEPC Use Only) 75-86-5 Acetone Cyanohydrin 500 10 1,000 1752-30-3 Acetone Thiosemicarbazide 500/500 1,000 1,000/10,000 107-02-8 Acrolein 500 1 500 79-06-1 Acrylamide 500/500 5,000 1,000/10,000 107-13-1 Acrylonitrile 500 100 10,000 814-68-6 Acrylyl Chloride 100 100 100 111-69-3 Adiponitrile 500 1,000 1,000 116-06-3 Aldicarb 100/500 1 100/10,000 309-00-2 Aldrin 500/500 1 500/10,000 107-18-6 Allyl Alcohol 500 100 1,000 107-11-9 Allylamine 500 500 500 20859-73-8 Aluminum Phosphide 500 100 500 54-62-6 Aminopterin 500/500 500 500/10,000 78-53-5 Amiton 500 500 500 3734-97-2 Amiton Oxalate 100/500 100 100/10,000 7664-41-7 Ammonia 500 100 500 300-62-9 Amphetamine 500 1,000 1,000 62-53-3 Aniline 500 5,000 1,000 88-05-1 Aniline, 2,4,6-trimethyl- 500 500 500 7783-70-2 Antimony pentafluoride 500 500 500 1397-94-0 Antimycin A 500/500 1,000 1,000/10,000 86-88-4 ANTU 500/500 100 500/10,000 1303-28-2 Arsenic pentoxide 100/500 1 100/10,000 1327-53-3 Arsenous oxide 100/500 1 100/10,000 7784-34-1 Arsenous trichloride 500 1 500 7784-42-1 Arsine 100 100 100 2642-71-9 Azinphos-Ethyl 100/500 100 100/10,000 86-50-0 Azinphos-Methyl 10/500 1 10/10,000 98-87-3 Benzal Chloride 500 5,000 500 98-16-8 Benzenamine, 3-(trifluoromethyl)- 500 500 500 100-14-1 Benzene, 1-(chloromethyl)-4-nitro- 500/500 -
For Aldicarb Reregistration Eligibility Decision (RED) Document for Aldicarb
United States Prevention, Pesticides EPA Environmental Protection and Toxic Substances September 2007 Agency (7508P) Reregistration Eligibility Decision for Aldicarb Reregistration Eligibility Decision (RED) Document for Aldicarb List A Case Number 0140 Approved by: Date: Steven Bradbury, Ph.D. Director Special Review and Reregistration Division Page 2 of 191 Table of Contents Aldicarb Reregistration Eligibility Decision Team ........................................................................ 5 Glossary of Terms and Abbreviations ............................................................................................ 6 Abstract........................................................................................................................................... 8 I. Introduction ................................................................................................................................. 9 II. Chemical Overview.................................................................................................................. 11 A. Chemical Identity..................................................................................................................11 B. Regulatory History ................................................................................................................12 C. Use and Usage Profile...........................................................................................................12 D. Tolerances .............................................................................................................................13 -
Novel Aspects in the Preparation of Phorone 2
Novel Aspects in the Preparation of Phorone Maria Konieczny* and George Sosnovsky Department of Chemistry, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA Z. Naturforsch. 33b, 454-460 (1978); received Januaiy 4, 1978 Phorone, Mesityl Oxide, Triacetoneamine, Nitroxyls The condensation of acetone using anhydrous hydrogen chloride results after three weeks at room temperature, in a 15% yield of phorone (4) and a 75% yield of mesityl oxide (5). In the presence of one weight percent of the Lewis acid, aluminium chloride, the yield of 4 is increased to 39%. An increase in the amount of the Lewis acid, aluminium chloride, to ten weight percent results in a 22% yield of phorone (4) and a 68% yield of mesityl oxide (5). In the presence of one hundred weight percent of aluminium chloride, ( CH3)2C = CHC CHr C(CH3)2 (CH3)2 C=CHCCH3 in the absence of hydrogen chloride, the condensation produces a 62% yield of mesityl oxide (5) and no phorone (4). In the course of this investigation, two intermediates, 6 and 7 o u (CH5)2C CH2CCH5 (CHJ)2CCH2CCH2C(CH3)2 CI 6 7 were isolated and characterized for the first time. These intermediates are the actual products formed in the condensation of acetone with hydrogen chloride, and not the "free" phorone (4) and mesityl oxide (5). The conversion of 6 and 7 to 5 and 4, respectively, occurs during the isolation stage using a saturated solution of ethanolic potassium hydroxide. Since the discovery of the long-lived nitroxyl science. The most commonly used nitroxyls are radical [1], 2,2,6,6-tetramethyl-4-oxopiperidine-l- prepared by the catalytic oxidation of triacetone- oxyl, and its derivatives, considerably interest has amine (1) or its derivatives with 30% aqueous been shown in the application of these nitroxyls in hydrogen peroxide in the presence of sodium various areas of biological [2, 3] and polymer [3] tungstate [3, 4]. -
(12) Patent Application Publication (10) Pub. No.: US 2011/0159073 A1 De Juan Et Al
US 20110159073A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2011/0159073 A1 de Juan et al. (43) Pub. Date: Jun. 30, 2011 (54) METHODS AND DEVICES FOR THE Publication Classification TREATMENT OF OCULAR CONDITIONS (51) Int. Cl. (76) Inventors: Eugene de Juan, LaCanada, CA A6F 2/00 (2006.01) (US); Signe E. Varner, Los (52) U.S. Cl. ........................................................ 424/427 Angeles, CA (US); Laurie R. Lawin, New Brighton, MN (US) (57) ABSTRACT Featured is a method for instilling one or more bioactive (21) Appl. No.: 12/981,038 agents into ocular tissue within an eye of a patient for the treatment of an ocular condition, the method comprising con (22) Filed: Dec. 29, 2010 currently using at least two of the following bioactive agent delivery methods (A)-(C): (A) implanting a Sustained release Related U.S. Application Data delivery device comprising one or more bioactive agents in a (63) Continuation of application No. 1 1/175,850, filed on posterior region of the eye so that it delivers the one or more Jul. 5, 2005, now abandoned. bioactive agents into the vitreous humor of the eye; (B) instill ing (e.g., injecting or implanting) one or more bioactive (60) Provisional application No. 60/585,236, filed on Jul. 2, agents Subretinally; and (C) instilling (e.g., injecting or deliv 2004, provisional application No. 60/669,701, filed on ering by ocular iontophoresis) one or more bioactive agents Apr. 8, 2005. into the vitreous humor of the eye. Patent Application Publication Jun. 30, 2011 Sheet 1 of 22 US 2011/O159073 A1 Patent Application Publication Jun. -
Gases Supported by IRI Analyzers
Toll Free | 800.344.0321 Tel | 510.782.8100 Fax | 510.782.8101 www.InfraredIndustries.com The following is a list of gases and vapors that can be analyzed Gases Supported with certain gas analyzers from Infrared Industries. For any application of a particular gas, please contact us to by IRI Analyzers confi rm our ability to meet your needs. GAS/VAPOR GAS/VAPOR 1 Acetaldehyde (Ethanal) 30 trans2Butenal (Crotonaldehyde) 2 Acetaldehyde Diacetate (Ethylidene Diacetate) 31 2Butoxyetanol Skin (Butyl Cellosolve; Ethylene Glycol 3 Acetic Acid (Ethanoic Acid) Monobutyl Ether) 4 Acetophenone (Acetylbenzene; Methyl Phenyl Ketone) 32 Butyl Acetate 5 1Allyloxy2, 3Epoxypropane (A.G.E., Allyl Glycidyl Ether) 33 secButyl Acetate 6 1Aminobutane Skin (Butylamine) 34 tertButyl Acetate 7 Aminoethane (Ethylamine) 35 1tertButyl4Methylbenzene (ptertButyltoluene) 8 2Aminoethanol (Ethanolamine; Monoethanolamine) 36 Camphene 9 Aminomethane (Methylamine) 37 Carbon Monoxide (CO) 10 2Aminopropane (Isopropylamine) 38 Carbon Dioxide (CO2) 11 2Aminotoluene Skin (oMethylaniline; oToluidine) 39 Carbonyl Sulfi de (CO 5) 40 Carbonyl Sulfi de (Carbon Oxysulfi de) 12 Ammonia (NH3) 13 Aniline Skin (Aminobenzene; Phenylamine) 41 Carvone (Carvol) 14 Benzaldehyde (Benzenecarbonal) 42 Chlorobenzene (Monochlorobenzene; Phenyl Chloride) 15 Benzene 43 1Chlorobutane (nButyl Chloride) 16 Benzyl Acetate 44 Chlorodifl uoromethane (Freon 22) 17 Bromobenzene (Phenyl Bromide) 45 1Chloro2, 3EpoxypropaneSkin (αEpichlorohydrin) 18 1Bromobutane (nButyl Bromide) 46 Chloroethane (Ethyl Chloride) -
Ketones and Quinones, Whether Or Not with Other Oxygen Function, and Their Halogenated, Sulphonated, Nitrated Or Nitrosated Derivatives
29-VI Sub-Chapter VI KETONE-FUNCTION COMPOUNDS AND QUINONE-FUNCTION COMPOUNDS 29.14 - Ketones and quinones, whether or not with other oxygen function, and their halogenated, sulphonated, nitrated or nitrosated derivatives. - Acyclic ketones without other oxygen function : 2914.11 - - Acetone 2914.12 - - Butanone (methyl ethyl ketone) 2914.13 - - 4-Methylpentan-2-one (methyl isobutyl ketone) 2914.19 - - Other - Cyclanic, cyclenic or cycloterpenic ketones without other oxygen function : 2914.22 - - Cyclohexanone and methylcyclohexanones 2914.23 - - Ionones and methylionones 2914.29 - - Other - Aromatic ketones without other oxygen function : 2914.31 - - Phenylacetone (phenylpropan-2-one) 2914.39 - - Other 2914.40 - Ketone-alcohols and ketone-aldehydes 2914.50 - Ketone-phenols and ketones with other oxygen function - Quinones : 2914.61 - - Anthraquinone 2914.69 - - Other 2914.70 - Halogenated, sulphonated, nitrated or nitrosated derivatives The term “ ketones and quinones with other oxygen function ” means ketones and quinones which contain also one or more of the oxygen functions referred to in previous sub-Chapters (alcohol, ether, phenol, aldehyde, etc., functions). VI-2914-1 29.14 (A) KETONES These are compounds containing the group (>C=O), so-called “ carbonyl ” group, and can be represented by the general formula (R-CO-R1), in which R and R1 stand for alkyl or aryl radicals (methyl, ethyl, propyl, phenyl, etc.). Ketones may have two tautomeric forms, the true ketonic form (-CO-) and the enolic form (=C(OH)-), both of which fall in this heading. (I) Acyclic ketones. (1) Acetone (propanone) (CH3COCH3). Found in the products of the dry distillation of wood (methyl alcohol and crude pyroligneous acid), but is mainly obtained by synthesis.