Document pme0x9R3pGde8bxyBXGGz6DEB

PLAINTIFF'S EXHIBIT USX-1204 Threshold Limit Values for 1958 Adopted at the 20th Annual Meeting of the American Conference of Governmental Industrial Hygienists Atlantic City, April 19-22, 1958 Reprinted from the A. M. A. Archives of Industrial Health August J9S8, V5L-1&, pp. 178-182 Copyright 1958, by American Medical Association m J Threshold Limit Values for 1958 Adopted at the 20th Annual Meeting of the American Conference of Governmental Industrial Hygienists Atlantic City, April 19-22, 1958 Threshold limits should be used as guides in the control of health hazards and should not be regarded as fine lines between safe and dangerous concentra tions. They represent conditions under which it is believed that nearly all workers may be repeatedly exposed, day after day, without adverse effect. The values listed refer to time-weighted average concentrations for a normal work day. The amount by which these figures may be exceeded for short periods without injury to health depends upon a number of factors, such as the nature of the contami nant, whether very high concentrations even for short periods produce acute poisoning, whether the effects are cumulative, the frequency with which high concentrations occur, and the duration of such periods. All must be taken into consideration in arriving at a decision as to whether a hazardous situation exists. Special consideration should be given to the application of these values in the evaluation of the health hazards which may be associated with exposure to com binations of two or more substances. Threshold limits are based on the best available information from industrial experience, from experimental studies, and, when possible, from a combination of the two. These values are based on various criteria of toxic effects or on marked discomfort; thus, they should not be used as a common denominator of toxicity, nor should they be considered as the sole criterion in proving or dis proving diagnosis of suspected occupational disease. These limits are intended for use in the field of industrial hygiene and should be employed by persons trained in this field. They are not intended for use, or for modification for use, in the evaluation or control of community air pollu tion or air-pollution nuisances. These values are reviewed annually by the Committee on Threshold Limits for changes, revisions, or additions as further information becomes available. The Committee welcomes the suggestion of substances to be added to the list and also comments, references,' or reports of experience with these materials. Submitted for publication Hay S, 1958. RECOMMENDED VALUES Gases, and Vapors ISTANCE PPM * Acetaldehyde ........... .... 200 Acetic acid ........... 10 Acetic anhydride ... 5 Acetone ................... .... 1,000 Acrolein ................... 0.5 Acrylonitrile ........... .... 20 Ally! alcohol ......... 5 Allyl chloride ......... 5 Approx. Ms:, per Cu. M..+ 360 25 20 2,400 12 45 12 IS Substance PPM* Allyl propyl disulfide Ammonia .................... Amyl acetate ............. .. Amyl alcohol (isoamyl alcohol) .. .. Aniline ........................ Arsine ............................. Benzene (benzol) ....... .. 2 100 200 100 5 .,0.05 25 , 178 Approx. Mr-, per Cu. M. t 12 70 1,050 360 19 0.2 80 i THRESHOLD LIMIT VALUES FOR 1918 SUBSTANCE PPM* Benzyl chloride ............ 1 Bromine ........................... 1 Butadiene (14`butadiene) ........... . 1,000 Butanone (methyl ethyl ketone) .. 250 Butyl acetate ((l-butyl acetate) ___ . 200 Butyl alcohol. (n-butanol) .................. . 100 Butylamine ..................... 5 Butyl cellosolve (2-butoxyethanol) -- 50 Carbon dioxide............... . 5,000 Carbon disulfide ........... 20 Carbon monoxide ........ . 100 Carbon tetrachloride -- 25 Cellosolve (2-ethoxyethano!) ... . 200 Cellosolve acetate (2-ethoxyethyl acetate) 100 Chlorine ........................... 1 Chlorine trifiuoride ------ 0.1 Chlorobenzene (monochlorobenzene) . 75 Chloroform (trichloromethane) . 100 1-Chloro-l-nitropropane 20 Chloropicrin .................. 1 Chloroprene (2-chloro-1.3-butadiene) 25 Cresol (all isomers) .. 5 Cyclohexane .................. . 400 Cyclohexanol .................. . 100 Cyclohexanone .............. . 100 Cyclohexene ................... . 400 Cyclopropane................... . 400 Decaborane ..................... 0.05 Diacetone alcohol (4-hydroxy-4-methyI- 2-pentanone) .............. 50 Diborane ......................... 0.1 o-Dichlorobenzene ........ 50 Dichlorodifiuoromethane 1,000 1.1-Dichloroethane ........... 100 12- Dichloroethane (ethylene dichloride) ... 100 1,2-Dichloroethylene ..... 200 Dichloroethyl ether ........ 15 Dichloromonofluoro- methane ........................ . 1,000 l.l-Dichloro-l-nitro- ethane ............................ 10 Dichlorotetrafluoroethane 1,000 Diethylamine.................... 25 Difluorodibromomethane 100 Diisobutyl ketone .......... SO ass Cu. M. t 5 7 2200 740 950 300 15 240 9,000 60 110 160 740 540 3 0.4 350 490 100 7 90 22 1,400 410 400 1,350 690 0-5 240 0.1 300 4,950 400 400 790 90 , 4-200 60 7,000 75 860 290 i Substance PPM* Dimethylaniline (K-dimethylanilme) . 5 Dimethylsulfate ............ 1 Dioxane (diethylene dioxide) ...................... . 100 Ethyl acetate ................ . 400 Ethyl acrylate................ 25 Ethyl alcohol (ethanol) 1,000 Ethylaminc...................... . 25 Ethylbenzene .................. . 200 Ethyl bromide .............. . 200 Ethyl chloride ............ . 1,000 Ethyl ether .................... .. 400 Ethyl formate .............. . 100 Ethyl silicate ................ . 100 Ethylene chlorohydrin . 5 Ethylenediamine ............ 10 Ethylene dibroraide (1,2-dibromoethane) . . 25 Ethylene hnine.............. 5 Ethylene oxide ............ 50 Fluorine ......................... 0.1 FIuorotrichloromethane . 1,000 Formaldehyde ................ 5 Furfural ......................... 5 Gasoline ......................... . 500 Heptane (n-heptane) .. . 500 Hexane (n-hexane) .. . 500 Hexanone (methyl butyl ketone) ....................... 100 Hexone (methyl isobutyl ketone) ........................ 100 Approx. Me. per CaM.t 25 5 360 1,400 100 1,900 45 870 890 2,600 1.200 300 850 16 30 190 9 90 0.2 5,600 6 20 2,000 2,000 1,800 410 410 Hydrogen bromide.......... 5 Hydrogen chloride.......... 5 Hydrogen cyanide .......... 10 Hydrogen fluoride .......... 3 Hydrogen peroxide, 90% 1 Hydrogen selenide.......... 0.05 Hydrogen sulfide .......... 20 Iodine ............................... 0.1 Isophorone ........................ . 25 Isopropylamine ................ 5 Mesityl oxide .................. 25 Methyl acetate ............ 200 "Methyl acetylene ............ 1,000 Methyl acrylate .............. 10 .Methyl alcohol (methanol) .................. 200 Methyl bromide .............. 20 Methyl cellosolve (2-methoxyethanol) .. 25 Methyl cellosolve acetate (ethylene glycol mono- methyl ether acetate) .. 25 j Methyl chloride .............. 10Q , 17 7 11 2 1.4 02 30 1 140 12 100 610 1,650 35 260 80 80 120 210 179 I fcs, m A. if. A. ARCHIVES OF INDUSTRIAL HEALTH SUBSTANCE PPM Methylal (dimethoxymethane) ........ ............. . 1.000 Methyl chloroform (1,1.1-trichloroelhane) 500 Methylcydohexane ......... 500 Methylcyclohexanol ......... 100 Methylcydohexanone ... 100 Methyl formate ............... 100 Methyl isobutyl carbtnol (methyl amyl alcohol) 25 Methylene chloride (dichloromethane) .... 500 Naphtha (coal tar) ----- 200 Naphtha (petroleum) ... 500 Nickel carbonyl ............... 0.001 . Nitric add ......................... p-Nitroaniline ................... Nitrobenzene .................... 10 1 1 Nitroethane ....................... 100 Nitrogen dioxide ............. 5 Nitroglycerin..................... 0.5 Nitromethane ................... 100 2-Nitropropane ................. Nitrotoluene ..................... 50 5 Octane ............................... 500 Ozone ................................. 0.1 Pentane ............................... 1,000 Peritanone (methyl propyl ketone) 200 Perchlorethylenc (tetrachloroethylene) 200 Phenol ............................... 5 Phenylhydrazine............... 5 Phosgene (carbonyl chloride) .. 1 Approx. Mg. per Cu.M. t 3,100 2,700 2,000 470 460 250 100 1,750 ,, 800 ' 2,000 0.007 25 6 -5 310 9 5 250 ISO 30 2550 02 2,950 700 1,350 19 22 4 Substance PPM* Phosphine ...................... 0.05 Approx. Mg. per Cu.M.+ 0.07 Phophorus trichloride . 05 3 Propyl acetate ............... . 200 840 Propyl alcohol (isopropyl alcohol) . 400 980 Propyl ether (isopropyl ether) ... . 500 2,100 Propylene dichloride (1,2-dichloropropanc) . Pyridine .......................... 75 25 10 350 60 30 Quinone .......................... 0.1 0.4 Stibtne ............................ 0.1 0.5 Stoddard solvent ........ . 500 2,900 Styrene monomer (phenylethylene) ___ . 100 420 Sulfur dioxide .............. 5 13 Sulfur hexafluoride ... . 1,000 6,000 Sulfur monochloride ... Sulfur pentafluoride ... 1 0.025 6 055 ^-Tertiarybutyltoluene . 10 60 1,1,25-TetrachIoroethane 5 Tetrahydrofuran ........... . 200 35 590 Tetranitromethane ........ 1 8 Toluene, (toluol) ......... . 200 750 o-Toluidine .................... 5 22 Trichloroethylene .......... . 200 1,050 Trifluoromooobromo- methane .................... . . 1,000 6,100 Turpentine ...................... . 100 560 Vinyl chloride (chloroethylene) ........ . 500 1500 Xylene (xylol) ............ . 200 870 * Parts of vapor or (u per million pans of air by volume, t Approximate milli trams per cubic meter of air. Toxic Dusts, Fumes, and Mists Mg. per Substance Cu. M.$ Aldrin (155.4.10.10-hexachloro- l,4,4a5A8a-bexahydro-l,4,5,8- dimethanonaphthalene ) ... 0-25 Ammate (ammonium sulfamate) . ... 15 Antimony ........................... ... 05 ANTU (alpha-naphthyl-thiourea) ... 0.3 Arsenic ....................................................... 05 Barium (soluble compounds) .............. O.S Cadmium oxide fume ........................... 0.1 Calcium arsenate..................................... 0.1 Chlordane (1,2,45.6,7,8,8- octachloro-3a,4,7,7a-tetrahydro- 4,7-methanoindane) .......................... 2 Chlorinated camphene, 60%---------------- O.S Chlorinated diphenyl oxide .................. 0.S Chlorodiphenyl (42% chlorine) ....... 1 Chlorodiphenyl (54% chlorine) ....... 0.S Chromic acid and chromates (asCrO,) 0.1 Mg. per Substance Cu. M.t Crag herbiride (sodium 2-[2,4- dichlorophenoxy] ethanol hydrogen sulfate) ...................... . 15 Cyanide (as CN) ........ .5 2,4-D(2,4-dichlorephenoxyacetic add) 10 DDT (25-bis[>-chlorophenyl]-l,l,l- trichloroethane) .................................. 1 Diddrin (155,4,10,10-hexachIoro- 6,7-epoxy-l,4,4a5,6,7,8,8a-octahydro- 1,4,5,8-dimethano-naphthalene) ........ 0.25 Dinitrobenzene ........................................ 1 Dinitrotoluene ......................................... 15 Dinitro-o-cresol ...................................... 0.2 EPN (O-ethyl O-^-nitrophcnyl thianobenxenepbosphonate) .............. 05 Ferbam ( ferric dimethyl dithiocarbamate) ............................. f IS Vat. IS, Aug., 1953 i 1 THRESHOLD LIMIT VALUES FOR 19SS Substance PPM * Mg. per Cu. M. t Ferrovanadium dust ...................... 1 Fluoride .................................................... 2J Hydroquinone .......................................... 2 Iron oxide fume ..................................... 15 Lead .......................................................... 0-2 Lead arsenate .......................................... -15 Lindane (hexachlorocydohexane, gamma. isomer) .................................. 0-5 Magnesium oxide fume.......................... 15 Malathkm (O.O-dimethyl dithiophos- phate of diethyl mcrcaptosuccinate) 15 Manganese ................................................. 6 Mercury ..................................................... 0-1 Mercury (organic compounds) ........... 0.01 Methoxychlor (2^-di-p-methoxy- phenyl-1,1,1-trichloroethane) .......... 15 Molybdenum (soluble compounds) ......................... 5 (insoluble compounds) ....................... 15 Nicotine ..................................................... 0-5 Parathion (O.O-diethyl O-fi- nitrophenyl thiophospha'te) ............... 0.1 Pentachloronaphthalene ......................... 0.5 Pentachlorophenol ................................... 0.5 Phosphorus (yellow) ............................. 0.1 Phosphorus pentachloride ..................... 1 Phosphorus pentasulflde......................... 1 Picric arid ............................................... 0.1 Pyrethrum ................................................. 2 Rotenane..................................................... 5 Selenium compounds (as Se) ............... 0.1 Sodium fiuoroacetate (1080) .............. 0.1 - Sodium hydroxide ................................... 2 ) Substance PPM* Mg. per Cu. M. t Strychnine ................................................ 0.15 Sulfuric add .......................................... 1 TEDP (tetraethyl dithionopyrophosphate;) .................... 0-2 TEPP (tetraethyl pyrophosphate) .. 0.05 Tellurium .................................................. 0.1 Tetryl (2,4,6-trinitrophenyI- methylnitramine) ................................ Ij Thiram (tetramethyl thiuram disulfide) .............................................. 5 Thallium (soluble compounds) ........ 0.1 Titanium dioxide.................................... 15 Trichloronaphthalene ............................ 5 Trinitrotoluene ........................................ IS Uranium (soluble compounds) ...................... 0.05 (insoluble compounds) ...................... 0-25 Vanadium (ViOdust) ......................................... 0.5 (ViOa fume) ...................................... 0.1 Warfarin (3-|<* acetonylbenzyl]-4- hydroxycoumarin) .............................. 0.5 Zinc oxide fumes.................................... 15 Zirconium compounds (as Zr) .......... 5 Radioactivity: For permissible concentrations of radio* isotopes in air, see "Maximum Permissible Amounts of Radio*totoi>c* in the Homan Body and Maximum Perrais- sible Concentration in Air and Water,'* 52, U- S. Department of Commerce, National Bureau of Standards, March, 1953. In addition, see "Permissible Dose from External Sources of Ionizing Radiation,'* Hand book 59, U. S. Department of Commerce, National Bureau of Standards, Sept. 24, 1954. Revision of the two publications mentioned above is in progress, X Milligrams of dust, fume, or mist per cubic meter of sir. Mineral Dusts Substance MPPCF Aluminum oxide ................................... 50 ^/Asbestos ............................................... 5 Dust (nuisance, no freesilica) ------ 50 . Mica (below 5% free silica).......... 20 Portland cement ................................... 50 Talc ........................................................... 20 Substance MPPCF Silica high (above 50% free SiO,) ... 5 medium (5 to 50% free SiO,) .. 20 low (below 5% freeSiO,) ______ 50 Silicon carbide ...................................... 50 Soapstone (below 5%freeSiO,) -.. f Millions of particles per cubic foot of air. 20 Substance (x) Acetylene tetrabromide ............... (x) Altyl glycidyl ether (AGE) ............... (x) Beryllium ................. (x) Boron trifluoride .. (x) n-Butyl glycidyl ether (BGE) .. TENTATIVE VALUES PPM || 1 10 1 50 Approx. Mg. per Cu. M-f 14 45 2y/m* 3 270 Substance ~ (x) Butyl mercaptan .. Chlorine dioxide .. (x) Chloroacetaldehyde (x) Chlorobrcmomethane (CIBrCH,) .... (x) Diglycidy! ether (DGE) .............. PPM || 10 0.1 1 400 10 Approx. Mg. per Cu. M.tf 35 0.3 3 2,100 U 55 J 181 c. A. M.A. ARCHIVES OF INDUSTRIAL HEALTH Substance PPM il (x) Dimethyl forznamide 1,1-Dimethyl hydrazine .......... (x) Dipropyleneglycohnethylether .. (x) Ethyl mercaptan .. (x) Furfuryl alcohol .. (x) Glyddol .................. see-Hexyl acetate (x) Isopropyl glyddyl ether (IGE) ... (x} Lithium hydride .. (x) Methyl mercaptan (x) a Methyl styrene .. (x) Monomethyl aniline (x) Paradichloro- benzene. .............. (x) Perchioromethyl mercaptan ........... (x) Phenyl glycidyl ether (PGE) .............. 20 0.5 100 250 50 so 100 50 50 100 2 75 0.1 so Approx. Mr. per Cu. M.T 00 1 600 640 200 iso 590 240 25y/ro* 100 480 9 450 0.8 310 Substance PPM S Phosphoric add ... . n-Propyl nitrate ,. 25 (x) Propylene oxide .. 100 (x) Tertiary butyl alcohol ................ 100 (x) ToiyIene-2,4diisocyanate ___ 0.1 1^3-Trichloropropane.. 50 (x) Triethyl amine___ 25 Triorthocresyl phosphate................ (x) Vinyl toluene........ 100 (x) Yttrium and in organic compounds (x) Xylidine .................. 5 (x) Teflon, decomposition products .............. (x) Pentaborane (BJi.) * Approx. M{. per Cu M.ff 1 110 240 300 0.7 300 100 0.1 480 5 25 ' * I Part* of vapor or (U per million parts of air by volume. 1 Approximate mflltcram* per cubic meter of air. (x) These values appeared on the tentative list for 1957. * Until more data are forthcoming it is important that ad are exposed must be kept as near 0 as possible. William L. Ball W. Clark Cooper H. E. Stokinger Ketth H. Jacobson ic concentrations of these materials to which workers Hervey B. Elkins W. H. Reinhart Allan L. Coleman, Ckairntan 182