Document x11J7VRQ8qqxv0aaaq6L8oy9Q

$ 1910.1001 Title 2^--Labor TaBLX Z-3--MiNtBAL Dvm Substance Mppcf Mg/M* SUIca: Crystalline: Quarts (respirable). 250 ' 10mg/M* ** Quarts (total dust) %S10i- %SI0i+2 30mg/M* Crlstohallte: Use H the value calculated from the count or mass formulae tor quarts. Tridymlte: Use J-4 the value calculated from the for. mulae for quarts. Amorphous. Including natural diatomaeeous earth................. %BiO+2 20 80mg/M* %S10i Silicates (less than 1% crys talline silica): Mica...................................... 20 Soapstone..................................... 20 Talc (non-asbestos-form) .. 20* Talc (fibrous). Use asbestos limit ............................... Tremollte (see talc, fibrous) Portland cement................ 60 Graphite (natural).................. 15 Coal dust (respirable fraction less than 5% SlOi).................................... 2.4mg/M or For more than 5% 810)............................... 10mg/M Inert or Nuisance Dust: Respirable fraction Total dust............................ %SIOr+2 16 5mg/M> 60 16mg/M* NOT*: Conversion factors-- mppcfX36.3-milllon particles per cubic meter --particles per c.c. Millions of particles per cubic foot of air, based on Implnger samples counted by Itght-fleld technics. 1 The percentage of crystalline silica In the formula Is the amount determined from airborne samples, ex cept In those Instances In which other methods have been shown to be applicable. i As determined by the membrane filter method at t30X_phase contrast magnification. ** Both concentration and percent quartz for the appli cation of this limit are to be determined from the fraction passing a size-selector with the following characteristics: Containing < 1% quartz; If > 1% quartz, use quartz Umlt. Aerodynamic diameter (unit density sphere) 2 2.5 3.6 6.0 10 Percent passing selector 90 76 60 20 0 The measurements under this note refer to the uso o an AEC Instrument.tf the respirable fraction of coal dust Is determined with a MRE the figure corresponding to that of 2.4 Me/M* In the table for coal dust IsS.6 Mg/M*. [39 FR 23502, June 27, 1974. Redesignated and amended at 40 FR 23073, May 28, 1976] R&S 100730 510 R&S 100731 Chapter XVII--Occupational Safety and Health Admin, 51910.1000 jr- Table jt-i--Continued Table Z-l--Continued Substance p.p.m.* mg./M * Substance p.p.m.1 Vinyl toluene.............................. 100 Warfarin........................................................... Xylene (xylol)___________ 100 Xylldlne--Skin........................... * 480 Oi l 05 25 Yttrium........................................................... 1 Zinc chloride fume....................................................1 Zinc oxide fume.............................................. 4 Zirconium compounds (os Zr)....................... 5 WTO Addition. Parts of vapor or gas per million parts of contami nated air by volume at 23" C. and 780 mm. Hg pressure. * Approximate milligrams of particulate per cubio meter of air. (No footnote "c" is used to avoid confusion with eeiiiog value notations.) 'An atmospheric concentration of not more than 0.02 p.p.m., or personal protection may be necessary to avoid headache As sampled by method that does not collect vapor. t For control of general room air, biologic monitoring Is essential for personnel control. Tabu Z-2 Material 8-hour time weighted average Acceptable ' celling concentration Acceptable maiimnm peak above the acceptable celling conceoUn tlon (or an 8-hour shift. -------------------------------------------------- Concentration Maximum duration Bantene (ZS7.4-1989)..................................... 10 p.pjn.............. 24 p.pjn...............40p.pjn... Beryllium and beryllium compounds 2eg./M*4g./M>2SegJM>... (Z37.29-1970). Cadmium fume (ZJ7A-1970)0.1 mg./M*8 mg./M*__________________________ ______ ________ Cadmium dost (Z37.6-1970)0.2 mg./M*0.8 mg./M*____________________________________ ___ Carbon disulfide (Z37A-1988)____ 20 p.p.m________30 p.p.m________ 100 p.pjn.. Carbon tetrachloride (Z37.17-1S87)10 p.p-tn............................... 26 p.pjn............... 200 p.p.m.. Ethylene dlbromlde (Z37A1-1970)20 p.pjn................................ 80 p.pjn...............40 p.pjn... Ethylene dlchloride (Z37.21-1969)................ 60 p.pjn..............100 p.pjn............. 200 p.pjn.. Formaldehyde (ZJ7.14-1067).............. ....... . 8 p.p.m...............8 p.pjn................ 10 p.pjn. ,, Hydrogen fluoride (Z37.28-1989)......................... .do............ ........................................................ Fluoride al dust (237.28-1089)...................... 2.8 mg./M1.............................. ............................. . Lead and Ita Inorganic compounds (Z37.il- 0.2 mg./M*_________ _______________ _______ 1969). Methyl Chloride (Z37.18-1989)....................... 100 p.pjn........ 200 p.pjn.............. 300 p.pjn Metbylene chloride (Z37A-1M0)................... 800 p.pjn........ 1,000 p.pjn............ 2,000 p.p.m. Organo (alkyl) mercury (Z37A0-1980)......... 0.01 mg./M *... 0.04 mgJM *................................. Styrene (Z37.16-1909).................................... 100p.p.m........ 200p.pjn............... 800p.pjn... Trichloroethylene (Z37.19-1967)...........................do...................... do.................... 300 p.pjn... Tatnchloroetbylene (237.23-1987) ................... do ..................do ........................ do--.. Tolnene (Z37.12-1907).................................... 200 p.pjn........ 300 p.pjn.............. 800 p.pjn... Hydrogen snlfldo (Z37J-1MS)................................................. 20 p.pjn..................80 p.pjn____ Memory (Z37.8-1971)............................................................... 1 mgJIOM * Chromic add and chromate* (Z37.7-1971)......................................do > 10 minutes. 30 minutes. Do. 8 minutes In eny 4 hour*. 4 minutes. 4 minutes in any 3boun. lOmlnutea. 4 minutes to any 3 hours, 4 minutes In any 2 hours. ?rA 1 boui ites InD 2 hours, itssln i hours, utas. utes once If no posure 509  1910.1000 Tablk Z-l--Continued Title 29--Labor TiBLt Z-l--Continued Substance p.p.m.* mg./M* Substance p-p.m.* mg./M* Nickel carbonyl, a ooi Nickel, metal and soluble cmpds, asNl............................ Nicotine--Skin............................ Nitric acid................................... 2 Nitric oxide................................. 25 p*Nltroaulline--Skin.................. 1 Nitrobenzene--Skin, ........... p-Nitrochlorobenzene--Skin.,.,, Nltroethane................................. 1 100 Nitrogen dioxide........ ............. .. 5 Nitrogen trlfluorlde.................... Nitroglycerin--Skin................... Nltrometbano...... ....................... 1-Nitropropane................. 2-Nltropropane............................ Nltrotoluene--Skin............... . Nltrotrlchloromethane, see Chloropicrin.. 10 0.2 100 25 25 6 Octacfaloronaphthalene--Skla.., Octane........................................ 000 Oil mist, mineral........................ Osmlnm tetroxida....................... Oxalic acid.................................... Oxygen dlflnorlde....................... 0.06 Ozone____ ______ _____________ ai Paraquat--Skin............................ Parathlon--Skin........................... Pentaborane................................ a 00S Pentachloronaphthalene--Skin.. Fentachiorephenol--Skin........... Pentane..................................... 2-Pentanone. ........ .. Perchloromethyl mercaptan___ Perchloryl fluoride...................... Petroleum distill ites (naphtha). 1,000 aoo 0.1 3 too Phenol--Skin.............................. s p-Phenylene diamine--Skin____ Phenyl ether (vapor)................. Phenyl ether-biphenyl mixture (vapor)................ ...... Phenylethylene, see Styrene___ Phenyl glycldyl ether (POE)... Phenylhydratlne--Skin............. Phosdrin (Mevlnphoe )-- Skin........................................... Phosgene (carbonyl chloride)... Phosphine............................ ...... ai 03 Phosphoric acid..................... . Phosphorus (yellow).................... Phosphorus pentachlotlde........... Phosphorus pentasulflde............. Phosphorus trichloride............... at Phthallc anhydride. -................ 2 Picric add--Skin.................................... Plval (2-Plvaly1-1,3* Indandlone)......................................... Platinum (Soluble salts) as Pt.......... .............................................. Propargyl alcohol--Skin............ 1 Propane...................................... 1,000 n-Propyl acetate.. an Propyl alcohol............................. an n-Propyl nitrate.......................... Propylene dichlorlde__ ........ Propylene lmlne--Skin.............. Propylene oxide.......................... Prooyne, see Methylacetylene.. 25 75 2 100 Pyrdhrum.................................. Pyridine...................................... 3 Qulnone....................................... 01 RDX-Skln................................ Rhodium, Metal fume and dusts, as Rh............................. Soluble salts............................. Ronnel......................................... Rotenone (commercial).............. Selenium compounds (as Be).... Selenium hexafluoride................ 0.03 See footnote* at end of table. 0007 1 05 6 30 6 0 1 no 0 29 2 250 90 90 so 0.1 2,360 *5 0002 1 0.1 0.2 05 Oil OOl 05 05 2,950 700 OS 13.5 2,000 19 Ol 7 flO 22 01 at at l 01 l 1 3 12 01 01 0002 1,800 810 500 110 350 5 210 5 15 01 LS 0.1 0.001 10 5 02 01 Silver, metal and soluble com pounds........................ Sodium fluoroacetate (1080)-- Skin.............................................................. OOl 0 05 Sodium hydroxide.......................................... Stlblne......................................... 01 2 0.6 Stoddard solvent....................... 500 2,950 Strychnine............................................................. 015 Sulfur dioxide.............................. 5 Sulfur hexafluoride..................... 1,000 13 6,000 Sulfuric Bcld.................................................... 1 Sultur monochloride................... 1 0 Sulfur pentafluorlde................... O 025 O 25 SuKuryl fluoride......................... 5 20 Systox, see Demeton __....................... .................... 2.1.5T............................................................... 10 Tantalum........................................................ 5 TE DP--Skin.................................................. 02 "ellurlum........................................................ 01 ''llurtum hexafluoride.............. O 02 02 rEPP-Skln................................................... 0 05 Z Terphenyls............................. .,1,1,2-Tetracliloro-2,2-dlfluoro- ethane....................................... 1 600 9 1,170 l,l,2,2.Tetracliloro-l,2-dlfluoro. ethane....................................... 500 1.170 1.1.2.2-Tetrachloroethane--Skin 6 35 Tetrachloroethylene, see Per- chloroethylene........................................................... -- Tetrachloromethane. see Carbon tetrachloride.................................................................... Tetrachloronaphthalene--Skin..................... 2 Tetraethyl lead (as Fb)--Skin........................... 0076 Tetrahydroluran........................ 200 690 Tetramethyl lead (aa Pb)-- Skin.............................................................. 0 07 Tetramethyl succtnonltrlle-- Skin.......................................... 05 3 Tetranltromethane..................... 1 Tetryl (2,4.5-trlnltrophenyl- methylnltramlne)--Skin,........................... Thallium (soluble com 8 1.5 pounds)--Skin as T1................................... Thlram............................................................ 0.1 5 Tin (Inorganic cmpds. except oxides............................................................ Tin (organic cmpds)....................................... C Toluene-2,1-dlisocyanate..... 002 2 01 Oil o-Toluldlne--Skin...................... 6 22 Toxaphene, see Chlorinated campbene....................................................................... Trlbutyl phosphate......... ................ 6 1.1.1-Trlchloroctbane, see Methyl chloroform......................................................... 1.1.2-Trlchloroethane--Skin...... 10 15 Tltanlumdloxlde............................................. 15 Trlchloromethane, see Chloro form................................................................................. Trlchlorouaphthalene--Skin......... ............ . 5 1.2.3-Trlchloropropane............... 50 300 1,1,2-Trlchloro 1,2,2-lrifluorO- ethane....................................... 1.000 7,800 Trlethylamlne............................ 25 100 TTlfluoromonnhromomethane... 1,000 8,100 2.1.8-Trlnltrophenol, see Picric acid................................................................................. 2.1.8-Trlnltrophenylraolnyl- nltramlne, see Tetryl...................................................... Trinitrotoluene--Skin.................................... 1.8 Trlorthiv-resyl phosphate............................... Trlnb'.nyl phosphate...................................... Turpentine.................................. 1 Uranium (solublecompounds)...................... 01 3 880 0.08 Uranium (insoluble compounds)....... ........... 0.25 C Vanadium: V)0, dust..................................................... O6 ViOifume..................................................... 01 Vinyl benzene, see Styrene____ ____ ____________ Vinylcyanlde. see Acrylonitrile............... .. See footnotes at end of table. 508 R&S 100732 Chapter XVIU-Occupational Safety and Health Admin. 1910.1000 Tablb 2-1--Continued Table 2-1--Continued Substance p.p.m.* mt /M* * Dlnitro-o-cressl--Skln_................ Dlnltrotoluene--Stein..................... Dloxane (Dtethylcne dioxide)-- Skin.......................................... 100 Diphenyl..................................... a2 Dlphenylmethane dllsocyanate ( Methylene blspbenyl Isocyanate (MI) I)....................... Dlpropylene glycol methyl ether--Skin.............................. 100 Dl-sec, octyl phthalate (DI-2- ethylhexylpbtbalate).................. Endrin--Skin................................. Eplchlorhydrtn--Skin............... EPN--Skin.................................... 1.2-Epoxypropane, see Propyleneoxlde........................... . 2.3-Epoiy-l-propanol, see Olycldol........................................ Ethanethlol. sec Ethylmer- captan.......................................... . Ethanolamlne............................. 2-Ethoxyethanol--Bkln.............. 200 2-Ethoxyethylacetate (Cello- solee acetate)--Skin................ 100 Ethyl acetate............................. 400 Ethyl acrylate--Skin............... 25 Ethyl alcohol (ethanol)............. 1,000 Ethylamlne................................. 10 Ethyl sec-amyl ketone (5- methyl-3-heptanone) 25 Ethyl benxene...................-........ 100 Ethyl bromide........-.................. 200 Ethyl butyl ketone (3- Heptanone).............-*.-..1. 50 Ethyl chloride............................. 1,000 Ethyl ether.................................. 400 Ethyl (orraate............................. 100 O Ethyl mercaptan----------------- 10 Ethyl silicate............................... 100 Ethylene chlorohydrln--8kin_ - & Ethylenedlamlne............. . 10 Ethylene dibromide, see 1,2- Dibromoethane..... ........... Ethylene dlchloride. see 1,2- Dichloroethane........................ O Ethylene glycol dlnltrate and/or Nitroglycerin--Skin... ea2 Ethylene glycol monomethyl ether acetate, see Methyl oelloeolve acetate----- ......... Ethylene lmlne--Skin................ Ethylene oxide............................ as so Ethylldlne chloride, see 1,1- Dtehloroethane........................ N-Ethylmorphollne--Bkln------- 20 Ferbam..................... FerTovanadlum dust................ Fluoride (as F)........................... Fluorine....................................... ai Fluorotrlch loromethane............ 1,000 Formic acid................................. 5 Furfural--Skin.... Furfuryl alcohol.......................... 5 so Olycldol (2,3-Epoxy-lpropanol)...... ........... ......... so Glycol monoethyl ether. See 2-Ethnxyethanol........................... Guthton , see Axlnphos- roethyl........................................... Hafnium............................ . Heptachlor--Skin ....---------... Heptane (n-heptane).................. soo Hexaehloroerhane--Skin........ " 1 Hexachloronaphthaleue--Skin..... Hexane (n-hexane)--.....------ soo 2-Hexanone......................... 100 Hexone (Methyl Isohutyl ketone)... ............................. eeo-Hexyl acetate...................... too so Bee footnote at end of table. as 1.5 360 1 000. s 0.1 10 as 740 540 1,400 100 1,900 13 130 435 890 230 2.500 1,200 300 25 850 16 25 1 00 94 IS 1 0.2 8.600 9 20 200 150 0.5 0.5 2.000 10 a2 1,800 410 410 300 Substance p.p.m.* mg./ Hydrazine--Skin........................ l Hydrogen bromide..................... C Hydrogen chloride................. Hydrogen cyanide--Skin........... 3 5 10 Hydrogen peroxide (90%)_____ Hyrtrocen selenlde...................... 1 aos Hydroqulnone.................................. C Iodine,....................... .*.*_*_. ai Iron oxide fume............................ ................. Isoamyl acetate..... ..................... 100 Isoemyt alcohol..... ..................... Isobutyl acetate........................ Isobutyl alcohol,. 100 iso 100 Isophorone.................................. 25 Isopropyl acetate........................ 250 Isopropyl alcohol........................ 400 Isopropylamine........................... Isopropylether............................. 5 500 Isopropyl glyddyl ether (IGE). 50 Ketene......................................... as Lead arsenate................................... . Lindane--Skin................................. . . Lithium hydilde.............................. L.P.G. (liquified petroleum . gas)........................................... 1, 000 Magnesium oxide fume__ ......... Mafothlon--Bkln. ........ ......... ........Maleic anhydride....................... a 25 C Manganese................................ . Mesityl oxide............................... Methanethtol, see Methyl mercaptan...................................... Methoiychlor................................... 2-Methoxyethanol, see Methyl MMceeetthhlloyysll oaalccyeeett.ay..lt.ee..n....e......(....p....r....o....p......y....n....e......)...................1,020000 Methyl acetylene-propadtene mixture (MAPP)..................... Methyl acrylate--Skin............... Methylal (dtmethoxymethane).. Methyl alcohol (methanol) Methyiamlne............................... 1,000 10 1,000 200 10 Methyl smyl alcohol, see Methyl Isobutyl carblnol........... . Methyl (n-amyl) ketone (2Heplanone).................. C Methyl bromide--Skin........... 100 20 Methyl butyl ketone, see 2- Hexanone................................. . Methyl cellosolye--Skin............. Methyl cellosolye acetate--Skin Methyl chloroform...................... Methylcycloheiane..................... Meth ylcycloheianol................... o-Meth ylcyclohexanone--Skin.. 25 25 850 500 IX 100 Methyl ethyl ketone (MEE), see 2-tlutenone........................ . Methyl Iodide--Skin.................. Methyl Isobutyl carblnol--Skin. IX 5 25 Methyl Isobutyl ketone, see Hexone....................................... Methyl Isocyanate--Skin........... a C Methyl mercaptan-............ . 10 Methyl methacrylate.............. . 100 Methyl propyl ketone, see 2- Pentanone.________ ... C a Methyl styrene.................... 100 C Methylene blsphenyl Isocyanate (MDI).................... 0.02 Molybdenum: Soluble compounds....... ............. .............. Insoluhle compounds................................ Monomethyl aniline--Skin------- 2 C Monomethyl hydrazine-- Skin.......................................... a2 Morpholine--Skin....................... 20 Naphtha (coaltar)...................... 100 Naphthalene............................... 10 See footnotes at end of table. L8 10 7 ii a1.24 2 1 10 625 360 700 300 915400 980 12 2,100 240 ao ai5 as a 126 1,800 15 IS 1 S 100 <10 1,180 uoo 85 3, 2li6w0 12 4wl 80 120 1,000 7, OX 470 460 250 28 100 aos 20 410 480 a? s IS 0.3S 70 400 SO 507 r [ 4 1910.1000 Title 29--Labor Table Z-l--Continued Table Z-l--Continued Substance p.pjn.* mg./M* * Substance p.pjn.* ANTU (alpha naphthyl thiourea)___ *............. ............ Arsenic and compounds (os As). Arsine.......................... ............ . Axinphos-methyl--Skin............. Barium (soluble compounds)... p-Benzoqulnone, see Qulnone.* Benzoyl peroxide........................ Benzyl chloride............... . ao& Biphenyl, see Diphenyl. Bisphenol A, see Dlglycldyl ether......... . Boron oxide................... ....... . C Boron trifluoride.................. Bromine............... ....... Bromoform--Skln*. 1 ai as Butadiene (l. 3-butadlene)........ l.ooo Butanethiol, see Butyl mer* captan.................................. 2-Butanone............................. -- 200 2-Butory ethanol (Butyl Cel- losolve)--Skin...................... 50 Bntyl acetate (n-butyl acetate). wo sec-Butyl acetate............. ..... 200 tert-Butyl acetate...--............. 200 Butyl alcohol............. ................ 100 seO'Butyl alcohol....... .............-- ISO tert-Butyl alcohol..................... 100 C Butylamlne--Skin..._____... 6 C tert'Butyl chromate (as CrOi)--Skin............................. n-Butyl glycidyl ether (BOB)-. so Butyl mercaptan.................... 10 p-tert-Butyltoluene............ . 10 Calcium arsenate.................... Calcium oxide............ ................. Camphor.............. ................. Carharyl (Sevjn ............ . Carbon black............................. Carbon dioxide,....................... 6,000 Carbon monoxide.................. * Cblordane--Skin................. . .S.O...... Chlorinated camphene--Skin. Chlorinated diphenyl oxide___ Chlorine........ .......................... 1 Chlorine dioxide.--................. 0.1 C Chlorine trifluoride.......... ai C Chloroacetaldehyde____ .... 1 *Chloroacetophenone (phenacylcbloride)................ . a os Chlorobenzene (monochloro benzene)........................... . 75 O-Chlorobenzyllden malononttrlle (OCBM),...... Chlorobromomithane 2-Ch,orM.3-butadiene. se** Chloroprene.................. . Chlorodlphenyl (42 percent a 05 200 Chlorine)--Skin................*, Chlorodlphenyl (54 percent Chlorine)--Skin............ . l*Chloro>2*3-epoxypropane, see Epichlorhydrin.................... 2-Chloroethanol, see Ethylene chlorohydrln.......................... Chloroethylene, see Vinyl chloride....... ........................ . C Chloroform (trlchloromethane).................................. 50 1-Chloro-l-nltropropane............. 20 Chloroplcrln..... .......................... Ol Chlofoprene (2-chlor<>'l,3- butadiene)--Skin.................... 25 Chromium, sol. chromic. chromous salts as Cr__....... Metal and Insol. salts.................. See footnotes at end of table. a3 as 0.2 as as 16 3 a7 5 2,200 SOO 240 710 BSO S0 300 400 SOO 16 a 270 35 00 5 X5 0.000 ss as aa as 3 03 04 3 03 350 0.4 l.QfO 1 aa 240 100 07 90 OS 1 Coal tar pitch volatiles (ben zene Hniuble fraction) anthra cene, BaP. phenanthrene. acridine, chrysene, pyrene..... Cobalt, metal fume and dust... Copper fume........ .............. Dusts and Mists.............. . Cotton dust (raw)--................... Crap herbicide................. .... Cresol (all Isomers)--Skin......... Crotonaldehyde--................... Cumene--Skin................. . 5 2 50 Cyanide (as CN)--Skin--....*.. Cyclohexane..*........... . Cyclohexanol............................ Cyclohexanone......... -.............. Cyclohexene............. 300 50 50 <300 Cyclopentadlene......... .. 75 2. 4-D. DDT--Skin.............................. DDVp, see Dlchlorvos............. Decahorane--Skin............... . a as Demeton- Skin............. . Diacetone alcohol (4-hydroxy4-methyl-2*pentanone)., 1,2-dtamlnoetnane, see 50 Ethylenediamlne.. Diazomethane..___ Dlborane. a2 0.1 Dibutylphthalate. C o-nulcchhlloorrohemene........... 50 rh-Dichlorobenxene................... 75 ulchlorodlfluoromethane....... 1,000 l,3-Dlchloro-6.6-dimftthyl hydantoln.. ......... ............ --*-- ^1,1-Dlchloroethane.................. -- 100 I,2-Dlchloroethylene. ___.... 200 C Dlchloroethyl ether--Skin. .. 15 Dlchloromethane, see Methylenechloride...--........... Dichloromonofluoromethane... 1,000 C l,l*Dichloro-l-nitroethane___ J,2-Dichloropropane, see 10 Propylenedlcnlorlde.--................. . pichlorotetrafluoroethane........ 1,000 Dlchlorvos (DDVP)-Skin.................... Dietdrln--Skin......................................... Diethylamlne___ ......___ .... 25 Dlethylamino ethanol--Skin. -- 10 Plethylether, see Ethyl ether........... . Difluorodibromomethane..*,. 100 C Dlclycldyl ether (DOE)... aa Dibydroxybenzene. see DHsobutyl ketone_______ _____ Pilsopropylamine--Skin*...... Dlmethoiyroethsne, sc Mcthylel...................................... Dimethyl acetamide--Skin.,... Plmothylamine.............. . Dimethylaminobenzene, see Xylidene......... ...................... plmethy!anlUne(N-dimethyl- anlllne)--Skin......................... Dlmethylbenzene, see Xylene* Dimethyl l,2-dlh:omo-2,2-dl- chloroetny) phosphate, (Dlbrom). DKiethylformamlde--Skin-..-- 2,6-Olmethylheptanone, see DHsobutyl ketone......... l.DDlmethylhydrazlne-- Skin.-- Dlmethylphthalate...................... . Dimethyisulfate--Skin.............. Dlnltroberoene (all Isomers)-- Skin........................................... 60 s 10 10 5 10 as t See footnotes at end of table. * as at at i l 16 23 6 245 5 1,050 200 200 1.015 200 10 1 as ai 240 a4 ai 3 soo 450 4,060 as 400 790 90 4,200 50 7,000 1 , a26 76 50 850 XI 290 20 35 tl 23 30 1 A 5 1 506 3J CO O O -4 03 -b> LO co K O o w cS EC Chapter XVII--Occupational Safety and Health Admin. $1910.1000 :h- work week, shall not exceed the 8-hour time weighted average limit given for Actus] con* 8-hoar tlmsfl centratlon weight^B that material in the table. Matart&I of 8-hour aver*ff^l (d) Computation formulae: (1) (i) The cumulative exposure for an exposure exposure^ limit 8-hour work shift shall be computed as follows: *=ar.+o*n+ ... or. Acetone (Table Z-1)....... SOOp.pjn... 1,000 p.p.m. 2-Butanone (Table Z-1).., 45 p.p.m.... 200 p.pjn. Toluene (Table Z-2)....... 40 p.pjn___ 200 p.pjn. Where: s t la the equivalent expoeure for the work ing shift. O la the concentration during any period of time T where the concentration remains constant. T la the duration In hours of the expoeure at the concentration O. The value of E shall not exceed the 8hour time weighted average limit in table Z-1, Z-2, or Z-3 for the material involved. (11) To illustrate the formula pre scribed in subdivision (1) of this subpara graph, note that isoamyl acetate has an 8-hour time weighted average limit of 100 p.p m. (table Z-1). Assume that an employee Is subject to the following exposure: Substituting in the formula, we have: 600 46 40 E-----------*- ---+---- 1,000 200 200 E.,=0.600+0.225+0.200 Em=0.926 Since Em is less than unity (1), the expo sure combination is within acceptable limits. (e) To achieve compliance with para graph (a) through (d) of this section, administrative or engineering controls must first be determined and imple mented whenever feasible. When such controls are not feasible to achieve full compliance, protective equipment or any other protective measures shall be used to keep the exposure of employees to air contaminants within the limits pre scribed in this section. Any equipment Two horns exposure at 160 p.pm. Two hours exposure at 76 p.pm. Four hours exposure at 60 p.p.m. and/or technical measures used tor this purpose must be approved for each par ticular use by a competent industrial Substituting this Information in the hygienist or other technically qualified formula, we have person. Whenever respirators are used. 2X160+2 X 76 + 4 X 60 ------------------------------ =81.35 p.pm. 8 their use shall comply with S 1910.134. TabLB z-1 ........ Since 81.25 p.pm. Is less than 100 p.pm.. the 8-hour time weighted average limit, the exposure is acceptable. (2) (i) In case of a mixture of air con taminants an employer shall compute the equivalent exposure as follows: o, o, c. B*=--- 1--+ . . . -- L, L, L- Where: E. la the equivalent exposure for the mixture. O is the concentration of a particular con taminant. L Is the exposure limit for that contami nant. from table Z-1, Z-2, or Z-3, The value of E,, shall not exceed unity (1). (11) To Illustrate the formula pre scribed in subdivision (1) of this sub- paragraph. consider the following Substance p.p.m.* Acetaldehyde.............................. Acetic add.................................. Acetic anhydride........................ Acetone...................................... Acetonitrile................................. Acetylene dichlorlde. see 1, 2* Dlchloroethylene.......... . Acetylene tetrabromtde..,.----- Acrolein....................................... Acrylamide--Skin.......... . Acrylonitrile--Skin___ .....----Aldrln--Skin................................ Allyl alcohol--Skin........ ........... Allvl chloride........... ................. *C Allyl Elyddyl ether (AOE). Allyl propyl disulfide.............. ?-Amtnoethanol, see Ethanol* amine................ .............. . 2-AmlnopyrIdlne................... . 'Ammonia......................... . Ammonium aulfamate (Am- 200 10 5 1.000 40 1 0.1 20 2 1 10 2 0.5 60 n-Amyl acetate........................... sec-Amyl acetate...................... . Aniline--Skin............................. Anlsldlne (o. p-lsomera)--Skin... Antimony and compounds (83 Sb)....................................... 100 125 5 mg./M* 350 25 20 2,400 70 14 0.26 0.8 45 0.25 6 3 45 12 2 36 15 525 650 10 as a6 exposures: See footnote* at end of table. 505 r ,',yv- ;-y . - J-;r V.'Fv -- J---: S 1910.1000 1q0?36 W o t Title 29--Labor Subpart Z--Toxic and Hazardous Substances Source: 30 FR 23502, Juno 27. 1974, unless otherwise noted. Redesignated Bt 40 FR 27073, May 28, 1975. 1910.1000 Air contaminants. An employee's exposure to any mate rial listed In table Z-l, Z-2, or Z-3 of this section shall be limited In accord ance with the requirements of the follow ing paragraphs of this section. (a) Table Z-l: (1) Materials with names preceded by "C"--Ceiling Values. An employee's ex posure to any material In table Z-l, the name of which Is preceded by a "C" (e.g,, C Boron trifluoride), shall at no time exceed the celling value given for that material In the table. (2) Other materials--8-hour time weighted averages. An employee's expo sure to any material In table Z-l, the name of which Is not preceded by "C", In any 8-hour work shift of a 40-hour work week, shall not exceed the 8-hour time weighted average given for that material In the table. (b) Table Z-2: (1) 8-hour time weighted averages. An employee's exposure to any material listed in table Z-2, in any 8-hour work shift of a 40-hour work week, shall not exceed the 8-hour time weighted average limit given for that material in the table. (2) Acceptable ceiling concentrations. An employee's exposure to a material listed In table Z-2 shall not exceed at any time during an 8-hour shift the ac ceptable celling concentration limit given for the material In the table, except for a time period, and up to a concentration not exceeding the maximum duration and concentration allowed In the column tinder "acceptable maximum peak above the acceptable celling concentration for an 8-hour shift''. (3) Example. During an 8-hour work shift, an employee may be exposed to a concentration of Benzene above 25 p.p.m. (but never above 50 p.pjn.) only for a maximum period of 10 minutes. Such ex posure must be compensated by expo sures to concentrations less than 10 p.p.m. so that the cumulative exposure for the entire 8-hour work shift does not exceed a weighted average of 10 p.pm. (c) Table Z-3: An employee's expo sure to any material listed in table Z-3, In any 8-hour work shift of a 40-hour 504