Document 91dqykyeYYNawY7OOZqJQ1LV5

158 CHAPTER 8 1956 Guide Table 3. Maximum Allowable Concentration of Gases and Vapobs ASA Stand- Threshold Limit Values A.C.Q.I.H.* 1954 Acetaldehyde............................. Acetic add....................... ' Acetic anhydride....................... Acetone....................................... Acrolein....................................... Acrylonitrile............................... Ammonia.................................................... Amyl acetate............ ................................ Amyl alcohol (iso)................................... . Aniline............................................................... Arsine......................................................... Benzene (benzol)..................................... Bromine.................................................... 1,3-Butadiene......................... .............. n-Butanol.............. ................................ 2-Butanone............................................... n-Butyl acetate..................................... Butyl "cellosolve" (2 butoxyethanol). Carbon dioxide............ .......................... Carbon disulfide..................................... Carbon monoxide ................................. Carbon tetrachloride............................ "Cellosolve" (2-ethoxyethanol)........... "Cellosolve" acetate............................. Chlorine............................. Chlorobenzene................ 2- Chlorobutadiene........... Chloroform..................... 1-Chloro-l-nitropropane. Cresol........................... Cyclohexane.......................................... Cyclohexanol......................................... Cyclohexanone..................................... Cyclohexene.. ..................................... Cyclopropane (propane)..................... 1-2 Dibromoethane (ethylene dibromide). o-Dichlorobenxene............................... Dichlorodifluoromethane.................. 1.1-Dichloroethane............................ 1.2-Dichloroethane (ethylene dichlonde) 1.2-Dichloroethylene......................... Dichloroethyl ether........................... Di chloromethane................................... Dichloromonofluormethane................ 1.1-Dichloro-l-Nitroethane.......... . 1.2-Dichloropropane (propylene dichlo- ride)...................................................... Dichlorotetrafluoroethane.................... Diethyl amine........................................ Dimethylaniline.......... Dimethylsulfate........... Dioxane......................... Ethyl acetate............. . Ethyl alcohol............... Ethyl amine................. Ethyl benzene............. Ethyl bromide............ Ethyl chloride. ....... Ethylene chlorhydrin. Ethylene oxide............ Ethyl ether.................. Ethyl formate.................. Ethyl silicate.................... Fluorine .......................... Fluorotrichloromethane. Formaldehyde................. Gasoline............................ Heptane........................... 20 100 ppm 200 10 5 1000 0.5 20 100 200 100 5 0.05 35 1 1000 100 250 200 200 5000 20 100 25 200 100 1 75 25 100 20 5 400 100 100 400 400 25 50 1000 100 IOO 200 15 500 1000 10 75 1000 25 5 1 100 400 1000 25 200 200 1000 5 100 400 100 100 0.1 1000 5 500 500 Gm/cu m or 0s/1000 ca ftb Os/1000 cu ft 0.36 0.02554 0.02085 .2.4130 0.1145 0.04336 0.069 1.064 0.36 0.019 0.11393 0.00653 2.210 0.3030 0.735 0.948 0.966 .0.43 0.02 0.02 2.42 0.013 0.05 1.16 0.41 0.02 0.12 0.03 3.3 0.36 0.88 1.04 1.02 0.0622 0.157 0.736 0.54 0.05 0.095 0.76 0.53 0.3465 0.0905 0.488 0.101 0.022 1.375 0.409 0.401 1.34 0.6875 0.3 0.09 0.31 0.08 0.02 1.69 0.42 0.41 1.58 0.91 0.3005 4.94 0.405 0.4051 0.794 0.0878 1.74 4.20 0.0589 ' 0.3265 6.98 0.045 0.02475 0.00515 0.36 1.44 1.881 0.24 3.18 0.33 0.31 0.59 0.08 1.25 2.83 0.4 0.29 4.36 0.07 0.02 0.003 0.33 1.52 2.2 0.868 0.892 2.64 0.01645 0.18 1.212 0.303 0.651 5.62 0.006135 2.045 2.05 0.96 0.59 2.75 0.015 0.09 1.67 0.315 0.87 3.7 2.89 2.87 Air Contaminants 159 Table 3. Maximum Allowable Concentration of Gases and Vapobs (Concluded) Substance ASA Stand ards M.A.C. ppm by volume Threshold Limit Values A.C.G.l.H* 1954 ppm Gm/cu m or Os/1000 cu ftb Os/1000 cu ft Hydrogen chloride................ Hydrogen cyanide................. Hydrogen fluoride.................. Hydrogen selenide................. Hydrogen sulfide.................... Iodine....... Isophorone Isopropyl alcohol....... Isopropyl ether........................................... Mesityl oxide............................................... Methyl acetate........................................... Methyl alcohol........................................... Methylal...........................! Methyl bromide......................................... Methyl butyl ketone (hexanone)............ Methyl*`cellosolve " (2-methoxyethanol) Methyl "cellosolve" acetate..................... Methyl chloride......... . .777--,................ Methyl chloroform (1-1-1 trichlaroethane) Methylcyclohexane....................... Methylcydohexanol............................. Methylcyclohexanone.......................... Methyl formate................................... Methyl iso-butyl ketone............... Monochlorobenzene....................... Monofluorotrichloromff-th*.np Naphtha (coaltar)....... ......... . Naphtha (petroleum)......... Nickel carbonyl....................... Nitrobenzene.............. Nitroethane...................... Nitrogen dioxide..................... itrogen oxides (other than nitrous c ide).............................................................. mtroglycerine.......................... .............. Nitromethane......................... '!!!"" 2-Nitropropane.................. Nitrotoluene. Octane......... ................................ Ozone....... ....................................... Pentane ......................... .. Pentanone (methyl propanone).. ............. rnoogene............. ............... Phosphine......... ........................... ^hoephorus trichloride................ A/PPy! acetate... otibine......... .................... Stoddard solvent, otyrene monomer Su fur chloride 1 1 ,ur dioxide.................... 'Tpt ^fetrachloroethane etrachloroethylene ((ppeerrcclhloroethylene) Toluene........... ^.oluidine x7eLehl0ride`:; 200 200 200 500 5 10 3 0.05 20 1 25 400 500 50 200 200 1000 20 100 25 25 100 500 500 100 100 100 100 75 1000 200 500 0.001 100 5 25 0.5 100 50 5 500 0.1 1000 200 5 1 0.05 0.5 200 0.1 500 200 1 5 200 200 5 200 100 500 200 1.76 0.00746 0.01104 0.00245 0.01039 0.141 1.022 2.085 0.2005 0.606 0.2618 3.11 0.0778 0.352 0.7775 0.1208 0.2086 2.005 0.466 0.458 0.2554 0.409 0.3465 5.61 0.638 1.945 0.000007 0.00503 0.307 0.00464 0.2495 0.182 0.028 2.33 2.94 0.704 0.00281 0.834 2.845 0.85 0.00552 0.343 1.358 0.752 0.0219 1.072 0.556 1.28 0.868 b*. G'l'H American Conference of Governmental Industrial Hygienists. ^*quid ounces (at 20 C) of chemical in 1000 cu ft. From 1953 list. 2.54 0.004 0.015 0.003 0.0002 0.15 1.22 2.75 0.22 0.62 0.32 3.5 0.04 0.41 0.078 0.11 0.22 2.44 0.49 0.48 0.25 0.49 0.3 3.59 0.71 2.6 0.000006 0.004 0.275 0.003 0.21 0.17 0.23 3.17 4.5 0.82 0.0018 0.885 3.4 0.89 0.003 0.02 0.810 0.83 0.02 0.70 0.58 1.33 0.96