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Dräger Gas List 2018 List of Detectable Gases and Vapours

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Dräger Gas List 2018 List of Detectable Gases and Vapours 9 0 0 2 - 2 3 9 3 3 - D Dräger Gas List 2018 List of detectable gases and vapours Dräger Gas List 2018 List of detectable gases and vapours Gas list to find a suitable fixed installed Dräger gas detection instrument for the detection of a specified substance Edition November 2017 Subject to alteration Dräger Safety AG & Co. KGaA Lübeck, 2018 04 | DRÄGER GAS LIST 2018 | SEARCH INDEXES Search Indexes This list of gases consists of three search indexes and the main part. The search indexes are suitable to find the substance in question by having only its CAS number, its name (including short name or technical abbreviation), or its sum formula. Using the search indexes you will obtain the substance’s Search Index for Sum Formula For every chemical formula - normally associated number to look for in the list of gases. given as a semi-structure formula - a If the substance is not listed, this does not necessarily sum formula exists. A sum formula is mean that this substance is not detectable. formed according to the Hill-system: Within each sum formula the element symbol C (for Carbon) is on the first place, the element symbol H (for Hydrogen) on the second, followed by all other element symbols in alphabeti- cal order. For every element symbol the Search Index for CAS Number When searching 1.2-Dichloroethane order is given with increasing number of The CAS number is a worldwide used look for Dichloroethane, find tert- atoms of the corresponding molecule. code to identify a chemical substance Butanol under Butanol and Methyl-tert- So it seems a little bit strange having a non-ambiguously. This number is butylether under Methylbutylether. sum formula of e.g. Ammonia H3N, of issued by the Chemical Abstracts Sulphur dioxide O2S and of Hydrogen Service and is the easiest way to This search index also lists short names cyanide CHN. characterise a chemical substance. or technical abbreviations. However Knowing the CAS no. means to be able these names may be ambiguous from Having the chemical formula of a to get comprehensive information and chemical aspects (e.g. Dimethyl ether substance, the individual element links from internet and search engines. and Dimethoxy ethane usually both are symbols have to be summarised and short-named as “DME”). sorted accordingly. With the sum The considered substance is unambig- formula obtained this way you can go uously specified by the CAS number. Furthermore refrigerants were into the search index for sum formulas considered. The so called ASHRAE to get the substance’s associated Search Index for Name / Abbreviation code is basically preceded by “R” number. (meaning refrigerant) although in other When sorting alphabetically the chemical countries characters such as “F”, “FCK”, Example: CH3COOH prefixes such as n-, i-, sec-, tert-, N-, “HFA”, “HFC”, “HFO” or names such as N.N-, or numbers were omitted. Please “Freon”, “Frigen” and “Propellant” etc. Sum formula is C2H4O2. This is the sum proceed correspondingly when looking are used. So, if you look for e.g. Freon formula of Acetic acid. But you can for a substance. 134a please search for R134a. verify that this is also the sum formula of Methyl formate (HCOOCH3). Attention: Sum formulas may be ambiguous! The printed data have been ascertained with utmost care. ThIndemnificationse printed data hav eor b ewarrantyen ascert aclaimsined w ionth u accounttmost car eof. missing or Inincorrectdemnifica tdataions o arer wa excluded.rranty claim s on account of missing or incorrect data are excluded. THE GAS LIST | 05 The Gas List TThishis llistist isis thethe realre al listlist ofof gases. gas es . ForFor each e ac h substance su bst an ce there there are ar e at a t leas t tleasthre e threelin es. lines.Besid Besideses th e c othelum columnsn s 1 and 1 1and 6 o f16 th eof c theu rr ecurrentnt num numberbe r the gas list ctheom gaspris elists 2 comprises0 further c20olu furthermns w columnshich are ewhichxplain areed iexplainedn the follo inw ing: the following: CColumnolumn 2:2: Substance,Substance Chemical, Chemic al By usingVapo uthers molof n weight-Butan Mo l youare can2.5 6 times If for theT osubstance obtain 5 0in %questionLEL (c the= 1 .0 %v/v) fformulaormula convert hea vconcentrationsi er t han air. given in %v/v calibration va p chamberour of E tprocedureh yl acetat ise in the 3 litres 3 Thhee mainmai n namename covers cover stwo tw columnso colum inns (= % by vol.) or ppm to obtain g/m or applicablecal ithebra valuetion c ofha themb amounter in s e rtot be 3 ithen t hfirst e f iline.rs t l iThene. Tsecondhe 2 n d linelin e shows show sthe th e mg/m( B y. u sing th e mo l w eight M yo u can inserted into the 3 litres calibration CAS no., and the third line shows the chamber to obtain 50 %LEL88 .1 (based on CAS-No., and the 3 rd line shows the convert concentrations given in %v/v F = 1.2478 . ____ . 1.0 = 122 microlitres chemical formula. Using the mol weight M you can also the LEL PTB in column 0. 910)0 is printed chemical formula. (= % by vol.) or ppm to obtain g/m 3 calculate the density of a gas in kg/m 3 below the value of the density. It is or mg/m 3. of liquid Ethyl acetate. Column 3: Shortn., S-formula (at 20 °C and 1013 mbar) by simply marked by a subsequent “v” (for CIf otherelum nis 3a: technicalShortn. ,abbreviation S-formu la multiplying with a factor of 0.04179: volume). Iknownf there it iiss alisted tech inn ithisc al columnabbrev isecondati on Using t he m o l weig h t M you c an also If for the substance in question the nd 3 kline.now Then it sumis li sformulate d i n tish i sprinted colum inn the2 Example:calcu lTheate tmolhe dweightensity of o fPropane a gas i nis kg/m Example:ca n-Hexane:libration c h81am v b er procedure is lthirdine. line.The sum formul a i s printe d in 44.1( ag/mol,t 20 ° Cso athend density1013 m ofb aPropaner) by sim isp ly ap plicable th e v a l ue of the amount to rd the 3 lin e. m ultiply ing wi th a fac to r of 0.04 17 9: You needbe toin insertserte d81 in microlitresto the 3 l iintotres calibration Column 4: Further synonyms U 0.04179 44.1 1.843 kg/m3 the Dräger ch a Calibrationm ber to o b Chambertain 50 % to L EL is printed CIf ofurtherlumn substance4: Furthe namesr syno nareym known s Example: The mol weight o f Propane iobtains 50be %LELlo w th ofe vn-Hexanealu e of t hvapour.e de ns ity. It is Ithef fu threerther mostnam eusuals ar e ones kno ware n tlisted he th re e If density44.1 g U/ mandol , molso tweighthe de nMs iarety o f Propane is ma rked by a subseq uent ‘v’ (for mhere.os t usu al on es ar e liste d h ere. known you are able to calculate the Columnv o6:lu Dens.me). g/ml 3 In this column the density U of the liquid amount= of0. 0liquid 417 9 to ⋅ 4be 4 .evaporated1 = 1.843 k ing/ am 3 CColumnolumn 5:5: Molw. Molw .g/mol g/m o l givenρ volume to obtain a defined vapour in g/ml (=Ex g/cmamp le) :at n -20H e°Cxa n ise listed.: 8 1 v This IInIn the the first fi rs linet lin thee th moleculare mol e cu weightlar we ight concentration.If density However, and m o itl wise veryigh t M are value exists only for liquids, so gases (molI weight) M is listed. The mol weight (mol weight) M is listed. The mol weight importantknow nthat yo uthisρ ar eliquid able is t oevaporated calcu late the are indicated You n byee d“Gas”. to in s ert 81 micro litres into the is used in many calculations, e.g. you is used in many calculations, e.g. you completely.amou nt Thisof li qrequiresu id to b a e sufficiently evaporate d in Dräger Calibration Chamber to obtain can calculate the relative density of a Column 7: Boil. °C can calculate the relative density of a higha vapour given vpressure.olu me to ob ta in a defin ed 50 %LEL of hexane vapour. gas or vapour by dividing value M by This column shows the boiling point of gas or vapour by dividing value M by v apour c oncentra tion. However, it is very 28.96. If the result is less than 1 the gas the substance in °C (at 1013 mbar). 28.96. If the result is less than 1 the Usei mthepo “calibrationrtant that tchamberhis liqui dformula”: is evap orated Column 6: Dens. g/ml is lighter than air. In most cases the To obtain a vapour concentration c in a gas is lighter than air. In most cases completely. This requires a sufficiently In this column the density of the liquid result will be greater than 1 - so it is volume of 3 litres at 20 °C and 1013 Below the boiling point given in °C the the result will be greater than 1 - so it high vapour pressure. in g/ml (= g/cm 3) at 20 °C ρis listed. This heavier than air.
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