Document RjDYngrRB3VGnJjwJNMJ2VNOV

c/ NO. 3 MAXIMUM PERMISSIBLE CONCENTRATIONS OF ATMOSPHERIC CONTAMINANTS IN PLACES OF EMPLOYMENT Effective December 1, 1957 (Supersedes American Conference of Governmental Industrial Hygienists Threshold Limit Values for 1956-- April 1957) CONSULT LOCAL HEALTH DEPARTMENTS AND PHYSICIANS . FOR INFORMATION AND ADY1CE ON METHODS OF CONTROL OVER HEALTH HAZARDS TO ALL WORKERS AND INDUSTRIAL DISEASES AND INJURIES ?? OH-13-1 I September 1957 TEXAS STATE DEPARTMENT OF HEALTH DIVISION OF OCCUPATIONAL HEALTH Austin, Texas 1 THESE STANDARDS WERE ADOPTED BY THE TEXAS STATE BOARD OF HEALTH ON SEPTEMBER 9, 1957 IN ACCORDANCE WITH THE AUTHORITY GRANTED IN ARTICLE 4418D OF THE REVISED CIVIL STATUTES, STATE OF TEXAS, AND ARE PROMULGATED ALSO IN ACCORDANCE WITH ARTICLE 4477, SECTION 19 c. 2 II CONTENTS I. Scope; purpose; Availability of Pertinent References.............................. .... . . ...................... .........................1 II. Applicability ofFigures ListedHerein ..................................... 1 III. Revision........................... ......................................... .... 1 IV.' Definitions................................................................ 1 V. Maximum PermissibleConcentrations During One Working Day.......................................................................................2 A. Gases and Vapors ...... B. Toxic Dusts, Fumes and Mists C. Mineral Dusts .......................... N vD CO {] i I I i> i 3 u MAXIMUM PERMISSIBLE CONCENTRATIONS OP ATMOSPHERIC CONTAMINANTS IN PLACES OP EMPLOYMENT I. Scope; Purpose; Availability of Pertinent References Scope; ' This regulation applies to all places of employment in Texas. It does not cover maximum permissible dose of radiation or the minimum environmental sanitation requirements, nor in clude measures required for control of community external air pollution or air pollution nuisances. Purpose; . - .. The purpose of this regulation is to prescribe to employers the maximum average atmospheric concentration of contaminants to which they are permitted to expose employees during an eight-hour working day in their places of employment, in eluding industrial establishments. ' Pertinent References: Copies of related laws, regulf ons, opinions of the Attorney General of Texas, and Advi ry Standards currently applicable will be provided to any citisen of Texas upon request. II. Applicability of Figures Listed Herein Individual people react differently after excessive exposures to atmospheric concentrations of contaminants in places of employment. Listed herein are weighted average concentrations generally safe in places of employment during an eight-hour working exposure. These are not maximum values which cannot be exceeded momentarily depending upon, but not limited to, such factors as nature of contaminant; frequency of occurrence of high concentration; variable durations of exposure; probability of acute poisoning from high concentration for even short periods; cumulative effects. Employers shall consider these factors prior to exceeding values listed herein. III. Revision Values listed herein are based upon information obtained from recent experience, experimental study reports, or a combination-of the two. Regular review will result in revision as justified. The State Board of Health solicits and will consider pertinent data based upon facts and experiences received from individuals. Industries, governmental agencies, or others. IV. Definitions 1. Industrial Establishment is defined to mean an institution, a place, building or location related to manufactures or to the product of industry or labor. 2. Places of Employment is defined to mean any place where two or more persona are directly or indirectly employed by another for direct or indirect gain or profit. !*',{ 4 -2- i A. Gases and Vapors Acetaldehyde ................................................... ...... Acetic acid ................................................................................. Acetic anhydride ........................................... ...... Acetone . , . .................................................................... .... . (t) Acetylene tetrabroraide...................................... , . . . Acrolein..................................................................................... Acrylonitrile ................................................... . ................. Allyl alcohol . .................................................................... .... Allyl chloride ............................................... ...... (t) Allyl glycidyl ether (AGE) ............................................... Allyl propyl disulfide ....................................................... Ammonia . ....................................................... ....... Amyl acetate ............................................................................ Amyl alcohol (isoamyl alcohol) .............................. , . Aniline . . .............................. .............................................. Arsine............................................... ......................................... Benzene (be..4aul ) **** Benzyl chloride ........................................... . ...................... (t) Boron trifluoride ..... .................................. . . . Bromine ..... .................................................................... Butadiene (1,3-butadiene) ................................................... Butanone (methyl ethyl ketone).............................. . Butyl acetate (n-butyl acetate) ...................................... Butyl alcohol (n-butanol) ..... .............................. (t) Butyl glycidyl ether (BGE) (n-butyl glycidyl ether) Butylamine ... .................................................................... Butyl cellosolve (2-butoxyethanol) ... ................. (t) Butyl mercaptan...................................... ................................. Carbon dioxide , .................................................................... Carbon disulfide .... ................................................... Carbon monoxide ........................................................................ Carbon tetrachloride ... .................................. ... Cellosolve (2-ethoxyetbanol) ..................... ..... Cellosolve acetate (2-ethoxyethyl acetate) .... Chlorine.................................. .................................................. Chlorine trifluoride ........................................................... (t) ChloroaceEaldehyde ......... .......................... Chlorobenzene (monochlorobenzene) .................................. (t) Chlorobromomethane (ClBrCH2) . ...................................... Chloroform (trichloromethane) .......................................... 1-Chloro-l-nitropropane ......... ................. Chloropicrln ....... ................. ....... P.P.M.* 200 10 5 1,000 1 0.5 20 5 5 10 2 100 200 100 5 0.05 25 1 1 1 1,000 250 200 100 50 5 50 10 5,000 20 100 25 200 100 1 0.1 l 75 400 100 20 1 Approx. Mg. f per Cu. M.+ \ 360 | 25 ' 20 2,400 e S j 14 1.2 45 1 S ? 12 | 15 i 45 12 70 1,050 | | \ I 360 I 19 1 0.2 80 | f 5 3 7 2,200 \ l S k 740 1 950 F 300 .? 270 } 15 ! 240 i 35 9,000 60 l ? 1 no 160 740 540 3 : 0.4 3 350 2,100 490 100 : j 7j Parts of vapor or gas per million parts of air by volume. +Approximate milligrams per cubic meter of air. (t)Toxicological information or injury reports on these items is of recent origin and most probably vill require revision at an early date. 5 A. GASES AND VAPORS (Cont.) -3- Chloroprene (2-chloro-l,3-butadiene) . . Cresol (all isomers) ..... .................. Cyclohexane.............................. ......................... Cyclohexauol .............. Cyclohexanone .... ....................................... Cyclohexene................. .... .............................. Cyclopropane .................................. ..... Oecaborane .................................. .... . . . Diacetone alcohol (4-hydroxy-4-methyl- 2rpentanone) ................. ........ Diborane . o-Dichlorobenzene .... .......................... Dichlorodifluoromethane .............................. 1.1-Dichloroethane ........................................... 1.2-Dichloroethane (ethylene dichloride) 1.2-Dichloroethylene ........... Dichloroethyl ether ....................................... Dichloromonofluorooethane .......................... 1,1-Dichloro-l-nitroethane .......................... Dichlorotetrafluoroethane . . ................. Diethylamine........................................... Difluorodibromcmethane . ...................... (t) Diglycidyl ether (DGE) .................................. Diisobutyl ketone . ....................................... Dimethylaniline (n-dimethylaniline) . . (t) Dimethyl formamide ............................ . . . Dimethylsulfate . . ................................... Dioxane (diethyiene dioxide) ...................... (t) Dipropyleneglycolmethylether ...................... Ethyl acetate.............................. .... Ethyl acrylate . ............................................... Ethyl alcohol (ethanol) . .......................... (t) Ethyl mercaptan .............................. Ethlamine . . . .'................. ......................... Ethylbenzene ........................................................ Ethyl bromide.................................. .... . Ethyl chloride................................................... Ethyl ether ................. ......... Ethyl formate ................................................... Ethyl silicate . ............................................... Ethylene chlorohydrin ......... P.P.M.* Approx. Mg. per Cu.M. -f- 25 5 400 100 100 400 400 0.05 90 22 1,400 410 400 1,350 690 0.3 50 0.1 50 1,000 100 100 200 15 10 1,000 25 100 10 50 5 20 1 100 100 400 25 250 25 200 200 1,000 400 100 100 5 240 0.1 300 4,950 400 40C 79 4,200 60 7,000 75 860 55 290 25 60 5 360 600 1,400 100 1,900 640 45 870 890 2,600 1,200 300 850 16 parts of vapor or gas per million parts of air by volume. Approximate milligrams per cubic meter of air. (t) Toxicological information or injury reports on these items is of recent origin and most probably will require revision at an early date. 'i C A GASES AND VAPORS (Cont.) Ethylenediamine...................... ............................. Ethylene dlbromide (1,2-dibromoethane) . Ethylene lmlne .................................................... Ethylene oxide ........................................... .... . Fluorine.......................... ................................... Fluorotrichloromethane ......... Formaldehyde .............. Furfural ......... .......................... (t) Furfuryl alcohol ............................................... Gasoline ................ (t) Glycidol ........ .............................. , Heptane (n-heptane) ........... Hexane (n-hexane) ... ................................... Hexanone (methyl butyl ketone)................. ... Hexone (methyl isobutyl ketone) ..................... Hydrazine ...... . ...................... . , Hydrogen bromide ...................... ....... Hydrogen chloride ............. Hydrogen cyanide ................................................... Hydrogen fluoride . . ........................................... Hydrogen peroxide, 90% ....................................... Hydrogen selenide .............. Hydrogen sulfide ............. Iodine ......................................................................... Isophorone ................................................................ (t) Isopropyl glycidyl ether (IGE) ...................... Isopropylamine ........................................................ Mesityl oxide .......................... ............................. Methyl acetate . ........................................... , . Methyl acetylene .............................................. . Methyl acrylate . .............................. .... . . . Methyl alcohol (methanol) ......... Methyl bromide . .................................................... Methyl cellosolve (2-methoxyathanol) . . , Methyl cellosolve acetate (ethylene glycsl monomethyl ether acetate) ...................... -Methyl chloride .... ................................... Methylal--(dimethoxymethane) ........ Methyl chloroform (1,1,1-trichloroethane) . Methylcyclohexaae . ............................................... Methyleyelohexanol .................. ....... Methylcyclohexanone........................................... . P.P.M.* Approx. Mg. Per Cu.M. 4-. 10 25 5 50 0.1 1,000 5 5 50 500 50 500 500 100 100 1 5 5 ' 10 3 1 0.05 20 0.1 25 50 5 50 200 1,000 10 200 20 25 . 30 190 9 90 0.2 5,600 6 20 200 2,000 150 2,000 1,800 410 410 1. 17 7 11 2 1. 0. 30 1 140 240 12 200 610 1,650 35 260 80 80 25 100 1,000 500 500 100 100 120 210 3,100 2,700 2,000 470 460 ( fi *Part8 of vapor or gas per million parts of air by volume. ' -f- Approximate milligrams per cubic meter of air. (t) Toxicological information or injury reports on these items is of recent origin and most probably will require revision at an early date. o -5- A. GASES AND VAPORS (Cont.) Methyl formate .......... ................. . . Methyl isobutyl carbinol (methyl amyl alcohol). . (t) Methyl mercaptan............................................................... (t) Methyl styrene ........ ................................... Methylene chloride (dichloromethane) ...... (t) Monomethyl aniline ...... .................. .... Naphtha (coal tar) ............... Naphtha (petroleum) .................................. ...... Nickel carbonyl .................................................................... Nitric acid................................................................ . . . P-Nitr'oaniline . .............................. .... Nitrobenzene .............................. .......... Nitroethane ... .................................. ...... Nitrogen dioxide . ....................................................... .... Nitroglycerin ... ............................................................ Nitromethane.............................. ................................. . . 2-Nltropropane .................................................................... Nitrotoluene ...... ............................................... Octane........................................... .......................................... Ozone ....................................... .................................................. Pentane . ................................................................................. Pentanone (methyl propyl ketone) ........ Perchioro*thylene (tetrachloroethylene) . , . . . (t) Perchloromethyl mercaptan .................................. Phenol ..... .................................................................... (t) Phenyl glycidyl ether (PGE) ........... Phenylhydrazine ......... .............................. Phosgene (carbonyl chloride) ....................................... Phosphine . . .......................... ........... Phosphorus trichloride ............. Propyl acetate .............................. ................................. .... Propyl alcohol (isopropyl alcohol) ....... Propyl ether (isopropyl ether) ..... ................. Propylene dichloride (1,2-dichloropropane) . , . Propylene imine . . ..................... ......... (t) Propylene oxide .................................................................... Pyridine . . , ......................... . Quinone . .......................... ........................ .... Stibine .......................... ................................................... Stoddard solvent ......... .......................... Styrene monomer (phenylathylene) ........ Sulfur dioxide ...................................... . ...................... P.P.M.* Approx. Mg. Per Cu.M. + 100 25 50 100 500 2 200 500 0.001 5 1 1 100 5 0.5 100 50 5 500 0.1 000 200 200 0.1 5 50 5 1 0.05 0.5 200 400 500 75 25 100 10 0.1 0.1 500 100 5 250 100 . 100 480 1,750 9 800 2,000 0.007 25 6 5 310 9 5 250 180 30 2,350 0.2 2,950 700 1,350 0.8 19 310 22 4 0.07 3 840 980 2,100 350 60 240 30 0.4 0.5 2,900 420 13 *Parts of vapor or gas per million parts of air by volume. *fr* Approximate milligrams per cubic meter of air. (t) Toxicological Information or injury reports on these items is of recent origin and most probably will require revision at an early date-. C o -6- A. GASES AND VAPORS (Cont.) Sulfur hexafluoride ...................... Sulfur monochloride ...................... Sulfur pentafluoride .................. -Tertiary butyl toluene . . . (t) Tertiary butyl alcohol . . . . 1,1,2,2-Tetrachloroethane . . . Tetrahydrofuran ........ Tetranitromethane ....... Toluene (toluol) . . .................. c-Toluidine .......... (t) T'olylene-2,4-diisocyanate , . . Trichloroethylene .......................... (t) Triethyl amine ........ Trifluoromonobromomethane . . . Turpentine........................... . . . Vinyl chloride (chJ.oroethylene) (t) Vinyl toluene ......... Xylene (xylol) ............................... (t) Xylidine ..... ...................... (#)(t) Teflon decomposition products . (#)(t) Pentaborane (B5E9) ...... P.P.M.* Approx. Mg. Per Cu.M. <- 1,000 1 0.025 10 100 5 200 1 200 5 0.1 200 25 1,000 100 500 100 200 5 0 0 6,000 6 0.25 60 300 35 590 8 750 22 0.7 1,050 100 6,100 560 1,300 480 870 25 0 0 B. TOXIC DUSTS. FUMES. AND MISTS Hr. per ' Cu. M. 4= Aldrin (1,2,3,4,10,10-hexachloro-1,4,4a,5,8,8a- hexahydro-l,4,5,8-dimethanonaphthalene) ............................................... Ammate (ammonium sulfamate).............................. .............................................. Antimony.................................................................................................... 0.5 ANTU (alpha naphthyl thiourea) ..... ................. ....... Arsenic ............................................... ................................. ................................. Barium (soluble compounds) ........................................................................ (t) Beryllium................................................................................................. 0.002 Cadmium oxide fume............................................................................... 0.1 Calcium arsenate.............................. ............................. '.................................... Chlordane (1,2,4,5,6,7,8, 8-octachloro-3a,4,7,7a- . tetrahydro-4,7 -methanoindane).......................... Chlorinated camphene, 60% .................... Chlorinated diphenyl oxide ...... ....................................... ... 0.25 15 0.3 0.5 0.5 0,1 2 0.5 0.5 * Parts of vapor or gas per million parts of air by volume. -f* Approximate milligrams per cubic meter of air. (t) Toxicological information or injury reports on these items is of recent origin and most probably will require revision at an early date. (#) Until more data are forthcoming, it is important that atmospheric concentra tions of these materials to which workers are exposed must be kept as near 0 as possible. Milligrams of dust, fume, or mist per cubic meter of air. n Q -7- B. TOXIC DUSTS. FUMES AND MISTS (Cont.) Mr. per Cu. M. ^ Chlorodlphenyl (427. chlorine) ...................................... ......................... 1 Chlorodiphenyl (54% chlorine) .. ........................................................ 0,5 Chromic acid and chromates (as CrOO ............................................... 0.1 25 Crag herbicide (sodium 2- fZt 4-dicnlorophenox^ ethanol hydrogen sulfate; ................................................... .... ' 15 Cyanide (as CN) .................. ......... ................................... 5 2,4-D(2,4-dichlorophenoxyacetic acid) ............ 10 DDT (2,2-bis^-chloropheny^T -1,1,1-trichloroethane) .... . 1 Dieldrin (1,2,3,4,10,10-hexachloro-6,7-epoxy- 1,4,4a,5,6,7,8,8a-octahydro-l,4,5,8-dimethano- naphthalene .......................... ........... ...................... 0.25 - Dinitrobenzene ........ ..................... . .............................. 1 Dinitrotoluene ....................... 1,5 Dinitro-o-cresol ...................... 0.2 EPN (O-ethyl 0--nitrophenyl thionobenzenephosphonate) .... 0.5 Ferbaa (ferric dimethyl dithiocarbsmate) . .. .................................. 15 Ferrovanadium dust ...................................................................................... 1 Fluoride ...................... .................... 2.5 EETF (hexaethyl tetraphosphate) ............................................................ 0.1 Hydroquinone ................ .............................. - 2 Iron oxide fume ................ .............................. 15 Lead .................................................................................................................... 0.2 Lead arsenate ............ ............................................... 0.15 Lindane (hexachlorocyclohexane, gamma isomer).............................. 0.5 (t) Lithium hydride.............................. 0.025 Magnesium oxide fume ......*. .......................... ... 15 Malathion (0,0-dimethyl dithiophosphate of diethyl mercaptosuccinate) ................................................................ 15 Manganese ............ ....................................... .... 6 Mercury ........... ........................................... .... 0.1 Mercury (organic compounds) ...... ...................... ..... 0.01 Methoxychlor (2,2-di--methoxyphenyl-1,1,1- trichloroethane) ............................................................................ 15 Molybdenum (soluble compounds)..................... ,5 (insoluble compounds)............................. 15 Nicotine...................... .... ....................................................... ........................ 0.5 (t) Paradichlorobenzene ..................... 450 Parathion (0,0-diethyl 0--nitrophenylthiophosphate) .... 0.1 Pentachloconaphthalene .... ................. .......... 0.5 pentachlorophenol ... .......................... ........... 0.5 Phosphorus (yellow)...................... ............................................................... 0.1 Phosphorus pentachloride ...... .............................. .... 1 Phosphorus pentasulflde ......... ................................... 1 Picric acid ....................................................................................................... 0.1 N__________________________ ^ Milligrams of dust, fume, or mist per cubic meter of air. (t) Toxicological information or injury reports on these items is of recent origin and most probably will require revision at an early date. 10 /-'N -8 - B. TOXIC DUSTS. FUMES AMD MISTS (Cont.) Mg. per Cu. M. i Pyrethrum............................................................... Rotenone . . ............................................................................. Selenium compounds (as Se) ................................................................ Sodium hydroxide .................................. .................................................. ' Sodium iluoroacetate (1080) . ....................................... ..... Strychnine.................................................................................................. Sulfuric acid ....................... TEDP (Tetraethyl dithionopyrophosphate) .......... TEPP (Tetraethyl pyrophosphate) . ....................................... .... Tellurium ...................... ........................................................................... Tetryl (2,4,0-trinitrophenylmethylnitramine) .......................... Thiram (tetramethyl thiuram disulfide) ...................... .... Thallium (soluble compounds) .............................................................. . . Titanium dioxide............................................... Trichloronaphthalene................. ........................................................... Trinitrotoluene .......................................... Uranium (soluble compounds) ................................................................ (insoluble compounds)................. ............................. .... Vanadium (V205 dust)............................................................................ 0.5 (V2O5 fume) .............................. ............................................................... Warfarin (3- /a-acetonylbenzyl / -4-hydroxycoumarin) .... (t) Yttrium and inorganic compounds ........................................................ Zinc oxide fumes ............................................................................ . Zirconium compounds (as Zr)........................................... .... 2 5 0.1 2 0.1 0.15 1 0.2 0.05 0.1 1.5 5 0.1 15 5 1.5 0.05 0.25 0.1 0.5 5 15 5 C. MINERAL DUSTS M.P.P.C.F.** Aluminum oxide ............................................................... Asbestos............................................................... Dust (nuisance, no free silica) .............. Mica (below 5% free silica) ........................................................ Portland cement.................................................. Talc...................................................... Silica High (above 50% free Si02)......................... Medium (5 to 50% free Si02)............................................................ Low "(below 5% free SiOj) ........................................... .... Silicon carbide ..................... ........................................................... . Soapstone (below 5% free S^)........................................................ 50 5 50 20 50 20 5 20 50 50 20 W Milligrams of dust, fume, or mist per cubic meter of air. (t) Toxicological information or injury reports on these items is of recent origin and most probably will require revision at an early date. ** Millions of particles per cubic foot of air. I Abb \\ii, - TEXAS 11