Document vB49qN4YmXzVNM9BYegrd4bV6

1. HC. 3 OCCUPATIONAL HEALTH REGULATIONS MAXIMUM PERMISSIBLE CONCENTRATIONS OF ATMOSPHERIC CONTAMINANTS IN PLACES OF EMPLOYMENT Effective December I, 1957 (Supersedes American Conference o( Governmental Industrial Hygienists Threshold Limit Volues for 1 956 -- April 1957) CONSULT LOCAL HEALTH DEPARTMENTS AND PHYSICIANS FOR INFORMATION AND ADVICE ON METHODS OF CONTROL OVER HEALTH HAZARDS TO ALL WORKERS AND INDUSTRIAL DISEASES AND INJURIES Or.-i:- ' Scpte">tr J9b7 : TE*4?. STATE 3En\f?T^ENT CF HEALTH niv:siOr- cr- cctuPATto-UL health Mt> |tf| T ^ * r, 4 * t THESE STANDARDS WERE ADOPTED 9Y THE TEXAS STATE BOARD OP HEALTH ON SEPTEMBER 9, 1957 IN ACCORDANCE WITH THE AUTHORITY GRANTED IN ARTICLE 44180 0? THE REVISED CIVIL STATUTES, STATE OP TEXAS, AND ARE PROMULGATED ALSO IN ACCORDANCE WITH ARTICLE 4477, SECTION 19 CONTENTS I. Scope; Purpose; Availability of pertinent References ........................................ . l II. Applicability ct Figures Listed Herein . . . . . , III. Revislcn ............................................. , IV. Definitions ............................................................................... .................... V. Maximum*permissible Concentrations During One Working Day A. Gases end Vapors............................................................................ 2 B. Toxic Ousts, Fumes end Mists................................................. 6 C. Mineral Dusts ................................................................................ I MAXIMUM PERMISSIBLE CONCENTRATIONS OF ATMOSPHERIC CONTAMINANTS IN PUCES OF EMPLOYMENT I. Scope: Purpose: Availability of Pertinent References Scope: This regulation applies to ell pieces of employment In Texee. It does not cover maximum pemleelble dose of redletlon or the minimum environmental eenltetlon requirements, nor In clude measures required for control of comaunity external elr pollution or air pollution nuiaancea. Purpoee: The purpose or this regulation la to prescribe to employers the maximum average atmospheric concentration of contaminants to which they arc paralleled to expose employees during an eight-hour working day In their pieces of employment, in cluding industrial establishments. Pertinent References: Copies of related lews, regulations, opinions of the Attorney Cenerel of Texas, end Advisory Standards currently applicable will be provided to any eltlten of Texas upon request. II. Applicability of Figures Listed Herein Individual people react differently after excessive exposures to acmospherlc concentrations of contaminants in pieces of employment. Listed herein are weighted average concentratIona generally aefe in places of employment during an eight-hour working exposure. These are not aaximw values which cannot be exceeded momentarily depending upon, but noc limited to, such factors aa nature of contaminant; frequency of occurrence of high concentration; variable durations of exposure; probability of acute poisoning from high concentration fot even short periods; emulative 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 hoard of Health solicits and will consider pertinent data based upon faces aad experiences received from individuals, industries, governmental c^v-ics, or others. l r.:f Inltlon* 1. I~d''>criftl Escabllslu-cnt ir defined to mean an institution, a p'.a-.o, building or location related to manufactures or to the ;>f-i!uci w`. industry or laloi. 2. .V > of '-'toicvrc.'r.c is defined to mean any place where two or m nernens are olrectly cr indirectly employed by anochcr for d::.:t or Indirect y.la or profit. * -2- V. MAXIMUM PERMISSIBLE CONCENTRATIONS DUIUHG ONE UORKINC DAY A. Gases and Vapors P.P.M.* Approx. Mg. per Cu. M.* Acetaldehyde........................................ Acetic acid............................................. Acetic anhydride............................................................................ Acetone .................................................................................................. (t) Acetylene tetrabromide..................... Acrolein.............................................................................................. Acrylonitrile..................................................................................... Allyl alcohol..................................................................................... Ailyl chloride................................................................................ (t) Allyl glyeldyl ether (ACE) .................................................... Allyl propyl disulfide.............................................................. Ammonia.................................................................................................. Amyl acetate..................................................................................... Amyl alcohol (lsoaayl alcohol) ............................................. Aniline.................................................................................................. Arsine................................................................................................... Benzene (benzol) ............................................................................ Benzyl chloride ................................................................................ (t) Boron trlfiuorlde ........................................................................... Bromioe.................................................................................................. Butadiene (l,3-butadiene) .......................................................... Butenone (methyl ethyl Icetane) ............................................ Butyl acetate (n-butyl acetate) ............................................. Butyl alcohol (n-butanol).......................................................... (t) Butyl glyeldyl ether (BCE) (n-butyl glyeldyl ether) . Butylsmlne......................................................... Butyl cellosolve (2-butoxyethanol) ................................... (t) Butyl mercaptan............................................................................... Carbon dioxide ................................................................................ Carbon disulfide . . ................................................................... Carbon monoxide................................................................................ Carbon tetrachloride ................................................................... Cellosolve (2-ethoxyethanol) ................................................. Cellosolve acetate (2-ethoxyethyl acetate) .................. dhlorlne.............................................................................................. Chlorine trlfiuorlde .................................................................. (t) Chloroacetaldehyde ....................................................................... Chlorobenzene (monochlorobenzene) ........................................ (t) Chlorobromomethane (ClBrCHj)................................................. Chloroform (trichioromethane)................................................. l-Chloro-l-nltropropane .............................................................. Chloroplcrln ..................................................................................... 200 O' S 1,000 1 0.5 20 5 5 10 2 100 200 100 5 0.05 25 I I I 1,000 250 200 100 50 5 50 10 5,000 20 100 25 200 109 I 0.1 I 75 400 100 20 L 360 2j 20 2,400 14 1.2 45 12 15 45 12 70 l,Q5Q 360 19 0.2 80 5 3 7 2,200 740 950 300 270 15 240 35 9,000 60 110 160 740 540 3 0.4 3 350 2,100 490 100 7 Parts of vapor or gas per million parts of air by volume. Approximate milligrams per cubic muter uf air. (t)Toxlcologlcal Information or Injury reports an these items Is of mc.-nt origin end most probably will require revision at an early date. t :o .0 :.4 1.2 5 5 5 i 0 0 0 9 n_i 0 5 3 7 3 i f t , g. GASES AHD VAPORS (Cone.) -3- P.P.M.* Chloropreoa (2-chloro-l, 3*butadi.'ne)............................... 25 Creaol (ill iaoaera) ................................................................... 5 Cyclohexane ..................................................................................... 400 Cyclohexanol..................................................................................... 100 Cyclohexanone .............................................................................. 100 Cyclohexane..................................................................................... 400 Cyclopropane ..................................................................................... 400 Decabcrane ..................................................................................... 0.05 Diaceton* alcohol (4-hydroxy-4>echyl- 2-paocanona) ................................................................................ 50 Diborene ................................................................................ 0.1 o*Dichlorobenxene ....................................................................... 50 Dichlorodifluorooechane .......................................................... 1,000 1.1-Dichloroeehane ....................................................................... 100 1.2-Dichloroathan* (echylane dlchlorlde) ...................... 100 1.2-Dichloroechyltne ................................................................... 200 Olchloroachyl other ................................................................... 15 Dichioracaonofluoraoethane.................. ............................... 1,000 I,l-Dichloro-l-nitroechane ..................................................... 10 Dlchloroeatrafluoroathane ..................................................... 1,000 Diethyiaaine ..................................................................................... 25 01fluorodibroaoaethane .............................................................. 100 (t) Diglycldyl athar (DCE).............................................................. 10 Ollaobutyl ketone ....................................................................... 50 Dlaathylaniline (n-diaethylaniline) ............................... 5 (t) Dlaethyl foraaslde..................................................................... 20 DinethyLaulfate ......................................................................... 1 Dloxana (diethylene dioxide) ................................................. . 100 (t) Dlpropyleneglycolaethylether ................................................. 100 Ethyl acetate .............................................................................. 400 Ethyl acrylate ................................................................................ 25 Ethyl alcohol (ethanol) .......................................................... 1,000 (t) Ethyl oercaotan .............................. ............................................. Kthlcair.e......................................................................................... Ethylbentane ..................................................................................... 250 25 200 Ethyl bromide . ............................................................................. 200 Ethyl chloride ................................................................................ 1,000 Fthyl ether ..................................................................................... 400 Ethyl formate ................................................................................ 100 Erhyl alllcate ................................................................................ 100 Ethylene chlnroliydrln.............................................................. 5 Approx. K*. par Cu.M. V- 90 22 1,400 410 400 1,350 690 0.3 240 0.1 300 4,950 400 400 790 90 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 aparts cf vauur or gas per istllion parts of air by volume. -( Aoproxizate alllli'rass per cubic meter c air. (O Toxicol informac; cu or injury reports on these itec.a la of recent origin uni most r'r5ban'.y will .critic tevliin at in early dote. I i A. GASES AND VAPORS (Cone.) ~u ~ Echylcnedl.anii.ne....................................................................... Ethylene dibrooide (1,2-di.bcomocrhanc) .................. Ethylene Imlne ....................................................................... Ethylene oxi.de....................................................................... Fluorine............................................. .... ................................... Fluoraerlchloromethanc ..................................................... Formaldehyde ............................................................................ Furfural ..................................................................................... (t) Furfuryl alcohol ................................................................... Caaollne ..................................................................................... (t) Glycldol ...................................................... .... .......................... Heptane (n-hepcane) .............................................................. Hexane (n-hexane) Hexanone (methyl butyl ketone) .................................... Hexane (methyl laobutyl ketone) .................................... Hydrazine ................................................................................ Hydrogen breaide ................................................................... Hydrogen chloride ... . . ............................................. Hydrogen cyanide ................................................................... Hydrogen fluoride ........ % ........................... Hydrogen peroxide, 90% ...................................................... Hydrogen selenlde . ............................................................... Hydrogen sulfide ................................................................... Iodine . ............................*..................................................... laophorone ................................................................................. (t) Isopropyl glycldyl ether (IGE) .................................... Isopropyiaolne ........................................................................ Mesityl oxide ........................................................................ Methyl acetate ... .......................................................... Methyl acetylene ................................................................... Methyl acrylate ................................................................... Methyl alcohol (methanol) ................................................. Methyl bromide . . ............................................................... Methyl celloeolve (2-mechoxyathanol) ...... Methyl celloeolve aeetate (ethylene glycel monomethyl ether acetate).................. .... . . . Methyl chloride ..................................................................... Methylel (dlsethoxymethane) .................. ....................... Methyl chloroform (1,1,1-trlchlorocthane) . . . . Methylcyclohexane ................................................................... Methylcyclohexanol ............................................................... Methylcyclnhexanone ............................................................... P.P.M.* I fr Approx. Mg. it i Per Cu.M. -fc 10 25 5 50 0.1 l,00C 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 2" 25 30 { 130 , 9j 90 0.2 ;.'- 5,600 * 6 20 20C 2,000 ; t ? j. 150 ' 2,000 Z 1,800 [ 410 ft 410 12 1.) 17 f- ^ r: ut 2r 0.2 t 25 100 1,000 500 500 ICO 100 *?erts of vapor or ^as per million parts of air by volume. fv + Approximate milligram* per cubic meter of air. I (t) Toxicological Information or Injury reports cn these Items Is of recent origit** end moec probably vlll require revision ,c an early dace. -5- K. GASES AWD VAPORS (Cone.) P.P.H.* Approx, Ha. Per Cu.H. + Methyl formate........................................................................ Methyl leobutyl cerblnol (nethyl amyl alcohol). . (t) Methyl mercaptan ................................................................... (t) Methyl eeyrene....................................................................... Methylene chloride (dlchlocomethane) ...................... (t) Monomethyl enlLlne ............................................................... Naphtha (coel ter)............................................................... Naphtha (petroleum) .............................................................. Nickel cerbonyl ........................................................................ Nitric ecld ................................................................................. P-Nltroenlltne.......................................................... . . . Nitrobenzene ............................................................................ Nltroethene ............................................................................ Nlcrogan dioxide ................................................................... Nitroglycerin ............................................................................ Nitronethanp ............................................................................ 2-Nltropropane ........................................................................ Nltrotoluene .................. , ................................................. Octane.......................................................................................... Ozone .............................................................................................. pentane .......................................................................................... pen tenone (nethyl propyl ketone)............................... Perchlorocthylene (tetrachloroethylene) .................. (e) perchlorooethyl mercaptan................................................. Phenol.................................. ......................................................... (t) Phenyl glycldyl ether (PCE)............................................. Phenylhydrazlne ........................................................................ phoegene (carbonyl chloride) ........................................ phosphine..................................................................................... phosphorus trichloride ...................................................... Frcpyl acetate ....................................................................... propyl alcchol (laopropyl alcohol) ........................... Propyl ether (laopropyl ether) ...................................... Propyl one dichlorlde (1,2-dlchlorupropanc) . . . Propylene inlne ........................................................................ (t) Propylene oxide ....................................................................... pyridine ..................................................................................... Qulnone ..... .............................................................. Stlblne ..... .............................................................. Stoddard solvent ................................................................... jtyrcr.e monomer (pher.ylathylane) ........ Sulfur dioxide ........................................................................ 100 23 50 100 500 2 200 500 0.001 5 l 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 5 250 100 100 460 1,750 9 800 2,000 0. 25 6 5 no 9 5 250 180 30 2,350 0 2,950 700 1,350 0, 19 310 22 4 0 ,07 3 840 980 2,100 350 60 24C 30 0 C 2,900 420 13 r?arta of '.apor or gas per million parts of air by voliee. .u approximate milligrams per cubic meter of air. Toxicological Information rr Injury reports on these Items La of rer ~.t origin and meat probably will require revision at ar. earl*'date. -6- A. GASES AMD VAPORS (Cone.) P.P.M.* Approx. Mg. Per Cu.m. 4- Sulfur hexafluoride .................. Sulfur monochlorid* ....................... Sulfur pencafluoride .................. jj-Tertlary butyl toluene , . . (t) Tertiary butyl alcohol . . . . 1,1,2,2-Tetuachloroethanc . . . Tecrehydrofuran ............................... Tetranltromethane ........................... Toluana (toluol) ........................... e-Toluidlne ......................................... (t) Tolylena-2,4-dllJoc>-anact . . . Trichloroethylene ........................... (C> Trlathyl aalna ................................ Trlfluoromonobromomethane . . . Turpantlna ......................................... Vinyl chloride (ehloroechylene) (t) Vinyl toluene .................................... Xylene (xylol) ................................ (t> Xylidine ............................................. (*)<e) Teflon decomposition products . (*)(') Pencaborane (B5K9) ...... U'/O 1 0.025 10 100 5 2CC 1 200 5 0.1 200 25 1,000 100 500 100 200 5 0 0 t., 000 6 0.25 60 500 35 5S0 8 750 22 0.7 1,050 100 6,100 560 l, 30C 480 870 25 0 0 B. TOXIC DUSTS. FUMES. AND MISTS MS- P* Qu- M. 4= j Aldrln (I,2,3,4,l0,l0-hexachloro-l,4,4*,5,8,8ahexehydro-l,4,5,8-dimethanonephthalene) ............................. .... Agnate (asnonlua sulfemece) . . . ................................................................... Antimony ..... .................................................................................................. ANTU (alpha naphthyl thiourea) ................................................. ..... Areenle ......................................................................................................................... Barlua (aolubla compounds) .............................................................................. (c) Beryllium...................................................... ,................................................................ Cadmium oxide f\a>e.................................................................................................. Calcium arsenate.............................................................................................. Chiordsne (1,2,4,5,6,7,8, 8-octachloro-3a,4,7,7a- tecrahydro-4,7-methanolndene) ............................................. .................. Chlorinated camphene, 60%..................................................................................... Chlorinated diphenyl oxide..... ............................................................... , 0.25 15 0.5 0.3 0.5 0.5 0.002 0.1 0.1 2 0.5 0.5 * Parts cf vapor or gas per million parts of air by volume. 4- Approximate milligrams per cubic meter of air. (t) Toxicological Information or injury reports on these items la of recent origin and most probably will require revision at an early date. (?) Until more data arc forthcoming, It la important that atmospheric concentre* clone of these mnirrlal* to which workers nrc irxposo-l mu*f` be kept a non !' as possible. Milligrams of dust, fume, or mlrc per cubic muter of air. -7- 4- J J.25 0 1 i J i 3 r r ) ) ) ) ): : I II IP * .25 .5 i .3 .5 I:?2 .1 .5 .5 J. TOXIC POSTS FMES AND MISTS front.) Chloredlpbenyl (427. chlorine).............................................................. Chlorodlphenyl (547. chlorine).............................................................. Chromic ecld end chrometee (ca CrO-j)............................................ Crag herbicide (eodiiaa 2- ?,4-dlcnlorophenoxvJ ethenol hydrogen aulfate) .............................................................. Cyanide (ae CM) .............................................................................................. 2,4-D(2,4-dlchlorophenoxyececlc acid) ..... ....................... OOT (2,2-bla/p-chlorophenyj7 -1,1,1-trlchlotoethane) . . . Dleldrln (1,2,3,4,10,lO-haxachloro-6,7-epoxy1.4,44,5,6,7,8,3a-oc eahydro-1,4,5,8dlaethanonaphthalene . . ......................................................................................... Dlaltrobeoaene .............................................................................................. Dinitrotoluene ............................................. .... ............................ Dlaitro-o-ereaol........................... ............................................................. I?N (O-ethyl 0--nltrophenyl thlonobenaenephoaphonaea) . . perhaa (ferric dimethyl dlthlocarbasate).................................... perToveaadlum duet .... ................................................................... pluorlde ............................................................................................................ HSTP (bexaethyl eecraphoaphace) .......................................................... Sydroquinoae ..... ............................................................................ Iron oxide fume .............................................................................................. Lead . ................................................................................................................ Lead araeaaee .................................................................................................. Lindane (hexachlorocyclohexane, gasaaa leaner)........................... (t) lithium hydride.............................................................................................. Hegnealum oxide fine ................................................................................ Ha la chion (0,0-dimethyl dlehiophoaphate of diethyl marcapeoaucclnata) . ...................................................... Hanganeae.................................... ................................................................. Mercury ....................................................................................................... Mercury (organic compound*)............................................................... Hethoxychlor (2,2-dl--methoxypheny1-1,1,1- trlchloroethane) ............ ........................... Molybdenum (aoluble compounds) ........................................................ (Insoluble ecmpounda) ................................................. Nicotine ... -................................................................................ . (t) Ptradichlorobenasn*................................................................... .... .. . parathien (0,0-diethyl 0--nicrophenylchiophoaphate) . . eacaehlorooaphchalene ....................................................................... peotachlorophenol ................................................................................ Phosphorus (yellow) ................................................................................ phosphorus peneachlorlde ................................................................... phosphorus psncesulflde ................................................................... ricrlc ecld................................................................... .... .......................... Mr. per Cu. m : l 0.5 0.1 15 5 10 1 0.25 1 1.5 0.2 0.5 15 1 2.5 0.1 2 15 0.2 0.15 0.5 0.025 15 15 6 0.1 0.01 15 5 15 0.5 450 0.1 0.5 0.5 0.1 l 1 0.1 'Igin 0 Milligrams of eiust, fume, or mist per cubic muter of sir. Toxicological Infi.m-itioi; m: `.nju.-y repr.-.j on these * Is of recent origin to", meat probsnly will rcqi.lrc revlaior. . an e.trly d#< . * I '**?#**''rxm ***^ 2 TOXIC DUSTS. FUI1ES AID MISTS (Cont.) uft. per Cu. II. Pyre thrum............................................................................................................ Rotenone ........................................................................................................... Selenium compounds (as So) . . .......................................................... Sodium hydroxide .......................................................................................... Sodium flvaroacetete (1080) ................................................................... Strychnine ................................................................................................... Sulfuric acid.................................................................................................. TEDP (Tetraethyl dithlonopyrophoephace) ........................................ TE?P (Tetraethyl pyrophosphate) ....................... . ........................... Tellurium .................................... .... .......................... .... ............................... TetryL (2,G,G-erlnitcophenylmethylnitramlne) ........................... Thiram (cetramethyl chit ram disulfide).................. .... . . . . Thallium (soluble compounds) ................................................................. Titanium dioxide ............................................................................................ Trichloronaphthalene ............................................................................ . Trinitrotoluene .... ........................................................................ Uranium (soluble compounds) . ............................................................... (insoluble compounds) . . ...................................................... Vanadium (VjOj dust) ................................................................................................... (V205 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 l 0.2 0.05 u.l L.5 5 0.1 15 . 5 1.5 0.05 0.25 0.5 0.1 0.5 5 15 5 1 r t t r- C. HIMCTAL DUSTS Aluminum oxide . . ....................... Asbestos ...... .................. Duet (nuisance, r.o free silica) Mica (below 5% free silica) . . Portland cement ................................ Talc....................................................... Silica High (above 50% free SIO2) Bed*urn (5 to SO% free S10j) . Low (below Si free SiOj) . . Silicon carbide ....... Soapstone (below 5% free SiOj) M.P.P.C.?.** 50 5 50 20 50 20 5 20 50 50 20 r * Jililgrams of dust. fume, or Blot per cubic meter of air. (t) Toxicological information or Injury reporcs on these items is of recent origin .7 end most probeuly will require revision ae an early dace.