Document B8b7K2Ge1z8EXQwyLdLj1wNQo

FILE NAME: Pennsylvania (PA) DATE: 1961 DOC#: PA022 DOCUMENT DESCRIPTION: PA Dept of Health Regulations Establishing Threshold Limits in Places of Employment '*>''*.'<.,?-j*ji>j&'ifij *'' " ' C :\*y aU l S ND REGtflUrtTJONS COiMONVfttX.tH T'BNWSYtiYANXA DEPARTMENT O *HEALTH l.'- Ctoptjr < v . - *<**2 ' , y ? -"` ^ Unidor tm provU loa o th o A d m lalatratlv Code A ct of A pril 9 , 1929 P* JU. 177, tbe following Rule mv> Rogwlodtui of io D e p artm e n t of H ^ollh a ro ts d opted {Mo 27fti d**/ of O c to b er, 1941. Approved to leg : o tM dly of )/, j ' Am / yjinUtixX unmoy:a'&3 . of ^ ": . . & . : $ & - * y }x (topetan of ji 0>j*) e:sm JHooi* Cf! .3rof?kSSrAN,(Ff.TnA-HRfT;iCfH'AI<VrEMSSB,m i Hi<. hjj. \ .*..m; C r * a ) , ", ' I l I . -ly1' '*'... igjfe'- . :' ".-. * V.' 1; 1 .fl >i v M -t- / V/i/V .r V ' ,, 1 i.,- . eifitti) 4tft> -.isut-STtte COMMtffrX/tLTK GF PK^ay.Lv.'vi* . . . . .. .'tJW<,\STks..KTT:u,s.;.rK.E/5.T v;:.- Vi.;.. I . U,,''J , i' ' v ' `* * i Bagtolailani ittoMl#hii> ' . Hi a klr.-tttfi to 11f Emplaymajcl >} m ,: te U nder VU pt-arinin tot (Iw d d m h d it: '* i c f i i / . p t x l t , lS2*i. P ..U , 177, the CtsUoiaiay. {.'ulna and Na/pUoatoea _>i thy piwtr-tTto # kr* 'adopttihiTr.ttjttoaOgtnbey^'l^Oiv J V ' ,. . '. : stiSfatj' PoPpW i.'.jj t, p o s to u s e'evfaitls-azHt itiaJa.T 'is U to ftvtKto'n . -'tiiiii r.iir- r,,qitirnt>> ,p<J toiWnrdj. ( ic tb* .iitln tin a n co cit occupational oulthi in p lccci toi enrplaytoi li P**toylviini. .action i , A p |4 lcitl i The-sa CtoQUltotltoiM and litajjdunJ* ahall apvlv c tjvary placa '.Uw v.pivy'AO, .'action , tSOitUion D. S'Ui > aauU moan pamela* J | Ut ito h><tultlsQ. t. ^v . ocn.ia chem ical h &yacu y n i H S ttb n ih to d fit cCiBjju f ataia. ttvh an sk u MMIm , otibUn'iclact, o r g n p o t t S m and d a m U m . '-*f E , "O uu" obaU T a n t a f o r ^ t M t Qtdii occupying tba B pu l m M llM * `fro - c w 'iiim j fV1 SltfDiJWtAR .''.W 11* PA S t'Ali. -".FCKWiJS IP >fH ' Aiw **>I*'.'ssW I?'7 <,1>w V , SJ .y *<w -*'/>>* 'Gii.- ',Joceall esthVyt v llU iitm '1 s id l'. w n 't)n t typa .aivye olilitlo n in / ", *; flirtC#,. 'wt-, 4 K, "Miol" i>uUiui Uqttld dirplof* cenpottdad to'fftf': I -"VlMCm al wptoymM" 0 locttsn arV-1**- , <:i .' {aasaewaa niplynnint i. O:fenjO oecngtttioiv 'ai idolri fari'tho Balut i 'mcmntary gain. X ''TliroabeW l4snU Valoo" (MoHtnm AUoWoblo Cieu^iitraticin;,-pocl:. ifciii iv>ea thtt tiotmlmuyii - -i*`---- tonnina* Co wfckh r/orbari day. (THoa* Vtilitaa etra ! par ni tratto ia-lttoa), ; ' K ,' "V apO T ''siali b y Ui?it, ricopi.wa& r, w iua oW la opponi! lo la aie H I ovyt Ua oariglitl Uqald atato afte* ralaosts traiti tw ai, cb*nd*I a rtle n i o r p ra sc u ra e cadiliane, 'S?etim i 4 . Eseiplcrywr't SSwfcW /.. Kvcry mployer giull tastali airi provilo oaeh catterai w u b w m utd p ia to c iiva equlpm ate o* U tvq a lro tu r tba p ro tsetlo o al Kflalth. &. Sveiry mployor atmit isfoti airi {riod&SiU/ ite truci bi*t unspiav \V- : c rgar34ng toiown husorda end pvopor moe&rie U>`* uHMilnfiindUeiril kyfftun etttiolfrioB naroB H ieh ics pj'ovWcii, ; fr. i" D* . " Whn It i oaeOM ry Io' t n tt/Wptoyati t'ft p r avido prair.ttv* cpUprr.toat.. eachaniployor eludi i tp p r& o ti eVionn I te ilo ^ siss and ntori* lU ing dftth protetive ' r i 0 wrj4aryr e ju lc a a a a ucb ..... mtfyJ w i to b trfJirfctUnitd in d o ta i aod a ab l& n r ejw dilic. ''Srplr'o*. to ry tjuiprrvirtt abati ai bs patiod troni cria m an t ttootuir atti **<&. equijtm ent la e le i u r i ptariU ned. Vfben O liar o r e a rtrtig typo o p lm ito ta a ra a, auch stftploym hMi beve aneli r e c p l n ^ t (ttf tUa a orifcluiwe tao * BaOptariory a ^ p n s u r i r q p lo c w a n t finito oliali tea tostai tutti e t in tuta, la s& StiM *' f ? W&ni caco a? GcugntSosal rfteuus i^ v o c a i/io d or v i r a conaen- tra tta n o f atrM i& ric coutcr-jiantti An t;.vcua 'o&ttu ahald Umile tuiW ba tanna to.zlat Ole D e ^ n m a t^ .in a y W q v d r^ y .iim p iiiv ijr t kaee b is am p l fca i OiatmtaeiJ ac periodi*: ir:t*.rVula. Ybw*s i;,, . exwi'ntationa rtsty BacleSt " > y autxntiaatlenii ad U h s m p y atdHso wbon indicatod. ', : V t -T 'VjiS ao lib a 9. T braiboM Lilmi V itte c A . H o z n (S o v a a b o l b t umpoWit fee & ttr y o e ^ t e c o n c a n frt* it o (i ..d e tenriwa liicii cooce n tra ti a*yj n u y g lw ris a to oeeu&eti^nal d N U t i . 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MIw m ou h a - t t b ^ p M Ovai &V7 . u AafcviM M t ?rttaxaS M S ipotw*i ; pc > -cbaa'tA S n t a i w Oxido Vi 'CUictte 50 Darr.tW 14n^>atcca 80' Mattato OC lIWcon Cerbi** 0 OUtar iAett dist 5 *V R - * i *' . ' r ' 'v , U U iW o* p artici p u r eilMc (M t f ir DutO <m Im p b jp it wmgOwi e,*d bp ugtg-fuu twbtivM . Vk, . ,,s ;. 'j*. ** ' ; S :' *r Ig f^ f $S$k&,t* MjKty---`S S'- "> ' - f :: I-.' . ' f ' i 'RaM titaiM nteitArmi '' " ' - . . . ' .r.w irce#,... i. tus..' ; . - ' X ni.'>*!,,-'f'i-W";-:*- y *.. f. i - IO. RULES AND REGULATIONS COMMONWEALTH OF PENNSYLVANIA DEPARTMENT OF HEALTH CHAPTER 4 Article 432 R e g u la tio n s Establishing Threshold Limits in Places of E m p lo y m e n t1* (Adopted October 27, 1961) 1; Section 1. Purpose The purpose of these regulations and standards is to p resc rib e minimum re q u ire m e n ts and sta n d ard s for the m aintenance of o ccupational health in places of employment in P en n sy lv an ia. Section 2. A pplication T hese regulations and standards shall apply to every place of employment. Section 3. D efin itio n s A. "A tm ospheric contam inant'* shall mean a harmful substance or m aterial in air usually occurring in the form of a d u st, fum e, g a s , vapor, or m ist, B. "D epartm ent" sh a ll mean the D epartm ent of H ealth, Commonwealth of Pennsylvania. C. "D u st" shall mean finely divided solid particles dispersed in air and having been formed by mech anical means such as grinding, crushing, blasting, and drilling. D. "F u m e" shall mean so lid p articles disp ersed in air resulting from som e chem ical or ph y sical p ro ce ss that involved a change of s ta te , su ch a.s combustion, sublim ation, or evaporation and'con densation. E. " G a s" shall mean a form less fluid occupying the space of enclosure. F . "G eneral or dilution ventilatio n " sh all mean ventilation provided to d ilute the concentration of du sts, fumes, g a s e s , vapors, or m ists in the atmosphere of all or part of the place of employ ment. G. "L o cal exhaust v e n tila tio n " sh a ll mean that type of ventilation in w hich su ctio n is applied at the point of generation of d u sts, fum es, g ases, vapors, and m ists. * Adopted pursuant to the provisions of the Adminis t r a t i v e Code of 1929: A c t o f A p r il 9, 1929, P .L . 177, os amended. H. " M is t" s h a ll mean liq u id d ro p lets s_ sp e n d e d in air. I. ''P la c e of em ploym ent" sh a ll m ean a lo c a tio n or site where an individual p o sse sse s employment in a trade, occupation, or profession for the sake of monetary gain. J . (am ended A ugust 18, 1964) ''T h resh o ld Lim it V alu e" sh a ll mean the maximum av erag e atm os pheric concentration of contam inant to which w orkers may be exposed for an eight hour work ing day. (T h ese values are se t forth in T able 1 hereof, which cable is a part of th e se regula tio n s .) ,K. ''V ap o r" sh a ll mean an y liq u id , e x c e p t w ater, w hich when held in su sp en sio n in air w ill revert to its o riginal liquid s ta te after re le a s e from h eatfchem ical action, or pressure conditions. L. (added A ugust 18, 1964) "Short-T rf L im it" sh a ll mean the maximum atm ospheric co n cen tra tion of a contam inant to which a workman may be exposed for a specified short-rim e period. The concentration rep resen ts an upper lim it of expo sure for the specified time and assum es that there are sufficient recovery periods between episodes for recuperation. The daily average exposure to the contam inant, including th ese episo d es, sh all be such that the threshold lim it value se t forth in T able 1 sh all not be exceeded. (T h ese values are set forth in T able 2 hereof, which table is a part of these regulations.) M. (ad d e d Ja n u a ry 25, 1968) "C o n fin ed s p a c e " s h a ll mean any tank, vessel or area so enclosed that adequate dilution vencilacion w ill not be obtained by natural air movement. REGULATIONS FOR THRESHOLD LIMITS S ectio n 4. E m p lo y e r 's D uties A. Every employer shall in stall and provide such control measures and protective equipment as is required for the protection of health. B. Every employer sh all inform and periodically instruct his employees regarding known hazards ?nd proper methods for utilizing industrial hy giene control m easures which are provided. C. When it is n e c e s sa ry for an em ployer to provide protective equipment, such employer shall pro vide an approved means for cleaning and steriliz ing such protective equipment, and the employer shall cause such equipm ent to be m aintained in a clean and sanitary condition. R espiratory equip ment shall not be p assed from one man to another until such equipment is clean and sterilized. When filter or cartridge type re sp ira to rs are used, such employee shall have such respirator for his own exclusive u se. R espiratory equipment and replacement units sh all be scored, when not in use, in approved containers. D. (amended August 20, 1963) When em ployees are exposed to compounds capable of causing occu pational d ise a se by inhalation an d /o r skin or mucous membrane absorption, the departm ent may require their employer to provide p h ysical exam inations and other te sts for them at period: in tervals. Section 5. Threshold L im it V alues and Short-Term Lim its A. (amended August 18, 1964) No em ployee sh a ll be exposed to atmospheric co n centrations of con tam inants which concen tratio n s may give rise co occupational disease. T ables ] and 2 shall be used for the determination of perm issible levels. B. Exposures to atmospheric contam inants or ad verse environmental conditions not referred to in Section 5A shall be con tro lled when n ec essary to protect health. Section 6. Air R ecircu lation and D isch a rg e A. No air from any local ex h a u st v e n tila tio n system may be recirculated w ithout ex p ress approval by the Department. B. The disch arg e of air from any ex h au st system sh all be such that no air contam ination w ill enter any window, door, or other opening of an ) work area in quantities sufficient to create a health hazard to or in such area. Section 7. Confined Space (amended January 25, 1968) No individual shall be perm itted to en ter any con fined space u n less another workman supplied with emergency protective equipment is stationed outside the confined space to summon help and to a s s is t the workman and until one of the three following condi tions have been met: A. It has been a s c e rta in e d by a ir sam pling th at the atm osphere in the confined sp ace c o n tain s an adequate quantity of oxygen and that harmful atm ospheric contam inants have been d ilu ted to safe concentrations prior to and during occu pancy; or B. The workman is equipped with a supplied-air respirator or self-contained breathing apparatus, a safety harness, a safety line and protective clothing, where necessary; or C. It is a sc e rta in e d that no harmful co n tam in an ts are present and m echanically induced dilution v en tilatio n is used before entry and during occu-> pancy to insure an adequate quantity of oxygen in the confined space. Section 8. Housekeeping A- The in te rio rs , ex terio rs, amd environs of build in g s 'here hazard o u s m aterials are u sed , scored, or handled, shall be cleaned and m aintained in such a manner as to prevent harmful exposure to hazardous m aterials. B- Em ployees engaged in such cle a n in g o p eratio n s and all others who may be exposed sh a ll wear protective equipment as is required. The cleaning operations should be done by suction apparatus. C. Where wet p ro c e sse s are u sed , re a so n a b le d rain age should be maintained. F alse filters, plat forms, m ats, or other means of safe footing should be provided. Section 9. L abeling Adequate identification, warning, and caution labels shall be applied to all containers ofhazardous chem icals. 2 PHD--Ch. 4r432 (amended August 17, 1965) REGULATIONS FOR THRESHOLD LIMITS Table I. Threshold Limit Values Substance' 8-liour maximum average exposure Mg. per^ P.P.M .3 Cu.M . A cetaldehyde Acetic acid Acetic anhydride Acetone Acetonitrile Acetylene tetrabromide Acrolein Aery lam ide--Skin A crylonitrile--Skin Aldrin (1, 2, 3, 4, 10, 10-hexa- chloro-1, 4, 4a, 5, 8, 8a-hexahydro-1, 4, 5, 8-dim ethanon a p h t h a le n e ) --Skin Allyl alco h o l--Skin ..Ally] chloride Ally] glycidyl ether (AGE) Allyl propyl disulfide 2 --A m in o p y rid in e Ammonia Ammonium sulfam are (Ammate) Amyl a c etate sec-Amyl acetate Amyl alcohol (isoam yl alco h o l) A niline--Skin Anisidine (o-, p-isom ers)--Skin Antimony ANTU (alpha naphthyl thio u rea) Arsenic Arsine Azinphos-me thy 1-S k in Barium (soluble compounds) Benzene (benzol)--Skin Benzoyl peroxide Benzyl chloride Beryllium Boron oxide Boron trifluoride Bromine 200 10 5 1,000 40 I 0.1 -- 20 -- 2 1 10 2 0.5 50 100 125 100 5 -- -- -- 0.05 -- 25 -- 1 -- 1 0.1 Butadiene (1,3-butadiene) 2-Butanone (methyl ethyl ketone) 2-Buroxy ethanol (Butyl Cellosolve)-Skin n-Butyl acetate sec-Butyl acetate tert. Butyl acetate Butyl alcohol tert. Butyl alcohol Buty la mine--Skin 1,000 200 50 200 200 200 100 100 5 0.3 0.25 15 0.5 0.5 0.3 0.5 0.2 0.5 0.002 15 _ _ - - -- PHD--Ch. 4-432 (amended January 25, 1968) Substance B-hour maximum average exposure Mg. per P .P .M .6 Cu. M. tert. Butyl chromate (as CrO j)-Skin - n-Butyl glycidyl ether (BGE) 50 Butyl mercaptan 10 p-tert. Butyltoluene 10 Cadmium (Metal dust and soluble salts) -- Cadmium oxide fume -- Calcium arsenate -- Calcium oxide -- Camphor - Carbary 1 (Sevin) -- Carbon black -- Carbon dioxide 5,000 Carbon d isu lfid e --Skin 20 Carbon monoxide 50 Carbon te tra c h lo rid e --Skin 10 Chlordane (1,2,4,5,6,7,8,8octachloro-3a,4,7,7a-tetra- hydro-4,7-m ethanoindene)--Skin - C hlorinated cam phene, 60% --Skin -- Chlorinated diphenyl oxide -- Chlorine 1 Chlorine dioxide 0.1 Chlorine trifluoride 0.1 C h lo ro a ce tald eh y d e 1 Chlorobenzene (monochloro benzene) 75 0- C h lo ro b e n zy lid en e m alononitrile (OCBM) 0.05 Chlorobromomethane 200 Chlorodiphenyl (42% Chlorine) -Skin - Chlorodiphenyl (54% Chlorine) -Skin - Chloroform (crichloromethane) 50 1- C hloro-1-nitropropane 20 Chloropicrin 0.1 Chloroprene (2-chloro- 1,3 -b u tad ien e)--Skin 25 Chromic acid and chrom ates (as CrO 3) - Coal tar pitch v o latiles (benzene soluble fraction) - Cobalt -- Copper fume Copper dusrs and m ists _ Cotton dust (raw) - 0.1 -- -- -- 0.2 0.1 1 5 2 5 3.5 -- -- -- -- 0.5 0.5 0.5 -- -- -- -- -- -- -- 1 0.5 -- -- -- -- 0.1 0.2 0.5 0.1 1 1 3 REGULATIONS FOR THRESHOLD LIMITS T able 1. (Continued) Substance Crag (R) herbicide (sodium 2- [2,4-dichlorophenoxyl] ethanol hydrogen sulfate) Cresol (all isom ers)--Skin Croronaldehyde C u m e n e --Skin Cyanide (as CN)--Skin Cyclohexane Cyclohexanol Cyclohexanone Cyclohexene Cyclopentadiene 2,4-D (2,4-dichlorophenoxy- acetic acid) DDT (2,2,-bis (p-chlorophenyl)- 1 , 1 ,1 - tr i c h lo r o e t h a n e ) --Skin D ecaborane--Skin Demeton (sy sto x )--Skin Diacetone alcohol (4-hydroxy- 4-methyl-2-pentanone) Diazomethane Diborane 1,2-Dibromoethane (Ethylene d ib ro m id e )--Skin o-Dichlorobenzene p-Dichlorobenzene Dichlorodifluorome thane l,3 -D ich lo ro -5 ,5 -d im erh y l hydantoin 1,1-Dichloroerhane 1,2-Dichloroethane (Ethylene dichloride) 1,2-D ic h lo ro e th y le n e Dichloroethyl eth er--Skin Dichloromonofluoromethane 1,1-D ich lo ro -l-n itro eth an e Dichlorotetrafluoroe thane DDVP (o,o-Dimcthyl-2,2- dichlorovinyl phosphate)--Skin Dieldrin (1,2,3,4,10,10-hexa- chloro-6,7-epoxy-l,4,4a,5,6,7, 8 ,8 a - o c ta h y d ro - 1 ,4 ,5,8dime thanonaphthalene)--Skin Diethylamine Die rhylam inoeihanol--Skin Difluorodibromomethane 8-hour maximum average exposure Mg. p e r1 P .P .M .8 Cu. M. 15 5 - 2 - 50 - - 5 300 - 50 - 50 - 300 - 75 - 10 -- 1 0.05 _ - 0.1 50 0.2 - 0.1 -- 25 50 - 75 - 1,000 - 0.2 100 -- 50 200 - 15 - 1,000 - 10 -- 1,000 - 1 0.25 25 - 10 - 100 __ Substance 8-hour maximum average exposure Mg. p e rb P'.P.M f Cu. M. Diglycidyl ether (DGE) 0.5 - Diisobutyl ketone Dimethyl acetam ide-Skin Dimethylamine 50 - 10 - 10 -- Dimechylaniline (n-dimethyla n ilin e )--Skin Dimethyl 1,2-dibromo-2,2dichloroethyl phosphate 5 __ - 3 D im e th y lfo rm a m id e --Skin 10 - 1 ,1-Dim ethylhydrazine--Skin 0.5 - Dimethyl su lfa te --Skin. 1 - D initrobenzene (all isom ers)--Skinl -- 1 D initro-o-cresol--Skin - 0.2 D initrotoluene--Skin 1.5 Dioxane (diethylene dioxide)-- Skin 100 Dipropylene glycol methyl eth er- Skin 100 Di sec. octyl p hthalate (D i-2 -eth y lh ex y l-p h th a late) 5 Endrin ( 1,2,3,4,10,10-hexa- ch loro-6,7-epoxy-1,4,4 a, 5, 6,7,8,8a-octa hydro-1,4,-endo- 5 ,8 ,-dime thanonaphthalene) -- Skin E pichlorhydrin--Skin 0.1 5 _ EPN (o-ethyl o-p-nitrophenyl thionobcnzenephosphonate)-- Skin E thanolam ine 0.5 3 2-Ethoxyethanol (ce llo so Iv e)-S k in 200 2-Ethoxye thy lace tare (cello so lv e a c e ta te )--Skin Ethyl acetate Ethyl a c ry la te --Skin Ethyl alcohol (ethanol) E thylam ine Ethyl sec-amyl ketone Ethylbenzene Ethyl bromide Ethyl butyl ketone 100 400 25 1,000 10 25 100 200 (3-Heptanone) Ethyl chloride Ethyl ether Ethyl formate Ethyl mercaptan 50 1,000 400 100 10 PHD--Ch. 4-432 (amended January 25, 1968) REGULATIONS FOR THRESHOLD LIMITS Table 1. (Continued) Substance 8-hour maximum average exposure -Mg. per*5 P .P.M .a Cu. M. n-Ethy lmorphol ine --Skin Ethyl silicate Ethylene chlorohydrin--Skin Ethylenediamine Ethylene glycol dinitrate (Combined EGDN + NG)--Skin Ethylene glycol roonoinethyl ether acetate (methyl cellosolve acetate) Ethylene imine--Skin Ethylene oxide Ferbam (ferric dimethyl dithiocarbamate) Ferrovanadium dust Fluoride (as F) Fluorine Fluorotrichloromerhane Formaldehyde Formic acid Furfural--Skin Furfuryl alcohol Glycidol (2,3-Epoxy- 1-propanol) Hafnium Heptachlor (l,4,5,6,7,8,8a-heptachloro-3a,4,7,7a-tetrahydro4 ,7 -m e th a n o in d a n e )--Skin Heptane (n-heptane) He xachloroe thane--Skin Hexane (n-hexane) Hexanone (methyl butyl ketone) Hexone (methyl isobutyl ketone) sec-Hexyl acetate H y d ra z in e --Skin Hydrogen bromide Hydrogen chloride Hydrogen cyanide--Skin Hydrogen fluoride Hydrogen peroxide, 90% Hydrogen selenide Hydrogen sulfide Hydroquinone Inert or nuisance p articu lates Iodine Iron oxide fume lsoamyl acetate Isobutyl acetate 20 100 5 10 0.2 25 0.5 50 _ _ 0.1 1,000 5 5 5 50 50 _ _ 500 1 500 100 100 50 1 3 5 10 3 1 0.05 ID 0.1 100 150 -- _ __ _ _ -- -- _ 15 1 2.5 _ _ _ _ _ _ 0.5 0.5 -- -- _ -- 2 15 10 Substance 8-hour maximum average exposur Mg. pet P.P.M . a Cu. M. Isophorone Isopropyl acetate Isopropylamine Isopropyl glycidyl ether (IGE) KeteneLead Lead arsenate Lindane (hexachlorocyclohexane, gamma isom er)--Skin Lithium hydride L.P.G. (liquified petroleum gas) Magnesium oxide fume Malathion (o,o-dimethyl dithiophosphate of diethyl mere aptosuccinate)--Skin Manganese Mercury--Skin Mercury (organic compounds)-- Skin Mesityl oxide Methoxychlor (2,2-di-p-methoxyp h e n y l-1 ,1,1-trichloroethane) 2-Methoxy-ethanol (methyl cellosolve) Methyl acetate Methyl acetylene (propine) Methyl acetylene-propadiene mixture (MAPP) Methyl acry late--Skin Methylal (dimethoxymethane) Methyl alcohol Methylamine Methyl (n-amyl) ketone (2-Heptanone) Methyl bromide--Skin Methyl chloride Methyl chloroform (1,1,1trichloroe thane) Methyl cyclohexane Methylcyclohexanol M ethylcyclohexanone Methylene bis phenyl isocyanate (MDI) Methylene chloride (dichlorome thane) Methyl formate 25 250 5 50 0.5 - - 1,000 - - 25 - 25 200 1,000 1,000 10 1,000 200 10 100 20 100 350 500 100 100 - 500 100 0.2 0.15 0.5 0.025 5 15 5 0.1 0.01 - 15 - - -- - - -- -- -- - 0.2 -- PHD~Ch. 4-432 (amended January 25, 1968) 5 REGULATIONS FOR THRESHOLD LIMITS Table 1. fContinued) Substance Methyl iodide--Skin Methyl isobutyl carbinol (methyl amyl alco h o l)--Skin Methyl isocyanate-S kin Methyl mercaptan Methyl m ethacrylate aMechyl styrene Monomethyl aniline--Skin Monomethyl hydrazine--Skin Molybdenum (soluble com- pounds) (insoluble compounds) M o rp h o lin e--Skin Naphtha (coal tar) Naphtha (petroleum) Naphthalene Nickel, metal and soluble compounds Nickel carbonyl N ic o tin e --Skin Nitric acid p-Nitroani lin e--Skin N itr o b e n z e n e --Skin p - N itro c h lo r o b e n z e n e --Skin Nitroethane Nitrogen dioxide Nitrogen trifluoride Nitroglycerin (combined EGDN + NG)--Skin Nitromethane 1-Nitropropane 2-Nicropropane N itro to lu e n e --Skin Octane Oil mist (mineral) Osmium retroxide Oxalic acid Oxygen difluoride Ozone Parathion (o,o,diethyl-o-pnitrophenyl thiophosphace)Skin Pentaborane P e n ta c h lo r o n a p h t h a le n e --Skin P c n ta c h lo r o p h e n o l--Skin Pentane 8-hour maximum average exposure Mg- p e rb P.P.M .3 Cu.M. ') - 25 - 0.02 - 10 - 100 - 100 - 2 - 0.2 - - 5 - 15 20 - 200 - 500 - 10 - - 1 0.001 - - 0.5 2 - 1 - 1 - - 1 100 - 5 - 10 - oo 0.2 100 25 25 5 - - 0.05 0.1 _ - - - - 5 0.002 1 - - - 0.1 0.005 - - 0.5 - 0.5 1,000 _ 6 Substance Pentanone (methyl propyl ketone) Perchloroethylene.. (ceirachloroerhylene) Perchloromethyl mercaptan Perchloryl fluoride P h e n o l --Skin p-Phenylene diamine--Skin Phenyl ether (vapor) Phenyl glycidyl ether (PGE) P h e n y lh y d r a z in e --Skin Phosdrin (2-carbomechoxy- 1- methyl vinyl dimethyl phosphate) --Skin Phosgene Phosphine Phosphoric acid Phosphorus (yellow) Phosphorus pentachloride Phosphorus pentasulfidc Phosphorus trichloride Phthalic anhydride Picric acid--Skin Pival Platinum (soluble salts) Propane Propyl acetate Propyl alcohol (isopropyl alcohol) Propyl ether (isopropyl ether) n-Propyl nitrate Propylene dichloridc ( 1,2-dichloropropane) Propylene imine-Skin Propylene oxide Pyrethrum Pyridine Quinone Rhodium --Metal fume and d u sts Soluble salts Rotenone (commercial) Selenium compounds (as Se) Selenium hexafluoride Silver, metal and soluble compounds Sodium fluoroacerate (1080)-- Skin 8-hour maxi mum average exposure Mg. per P .P .M .a Cu. M. 200 - 100 - 0.1 - 3 - 5 _ -- 0.1 1 -- 50 -- 5 -- 0.1 0.3 -- -- - -- 0.5 2 - 1,000 200 400 500 25 75 2 100 - 5 0.1 -- _ - 0.05 - - 0.1 - _ 1 0.1 1 1 _ _ 0.1 0.1 0.002 - - - -- 5 - 0.1 0.001 5 0.2 _ 0.01 0.05 P H D --Ch. 4-4 3 2 (am en ded January 25 , 1968) REGULATIONS FOR THRESHOLD LIMITS T able 1. (Continued) Substance Sodium hydroxide Stibine Stoddard solvent Strychnine Styrene monomer (phenylethylene) Sulfur dioxide Sulfur hexafluoride Sulfuric acid Sulfur monochloride Sulfur penrafluoride Sulfuryl fluoride 2, 4, 5T (2, 4, 5-Trichloro- phenoxy-ace c acid) Tantalum TEDP (tetraethyl dithiono- p y r o p h o s p h a t e ) --S k in Tellurium Tellurium hexafluoride TEPP (tetraethyl pyrophosphate) --Skin 1, 1, 2, 2 -T etrachloroethane-- Skin 1, 1, 2, 2-Tetrachloro- 1, 2-difluoroethane 1, 1, 1, 2-T etrachloro-2, ,2-difluoroethane Tetraethyl lead (a s P b )--Skin Tetrahydrofuran Tetramethyl lead (TML; (as Pb)-Skin Tetramethyl succinonitrile -- Skin Tetranitrome thane Tetryl (2, 4, 6-trinitrophenyl -- methylnitram ine)--Skin Thallium (soluble compounds) -Skin Thiram (tetramechyl chiuram disulfide) Tin (inorganic compounds) (organic compounds) Titanium dioxide Toluene (toluol) Toluene-2, 4-diisocyanatc o - T o l u id in e --Skin 8-hour maximum average exposure Mg. per b P .P .M .3 Cu. M. - 2 0.1 - 500 - - 0.15 100 _ 5 - 1,000 - - 1 1 - 0.025 - 5' - 10 - 5 0.2 -- 0.1 0.02 - 0.05 5 500 500 - 0.075 200 - 0.075 0.5 1 - 1.5 0.1 - 200 0.02 5 5 2 0.1 15 -- Substance 1 ,1 , 2-T richloroethane--Skin T rich lo ro eth y len e T rich lo ro n ap h th alen e--Skin 1, 2, 3-Trichloropropane ' 1 ,1 , 2-Trichloro 1, 2, 2-trifluoroethane T rieth y lam in e Trifluoromonobromomethane T rin itro to lu en e--Skin Triorthocresyl phosphate Triphenyl phosphate Turpentine Uranium (soluble compounds) (insoluble compounds) Vanadium (VjOs dust) (V,O s fume) Vinyl chloride (chloroethylene) Vinyl toluene Warfarin (3 -[aacetonylbenzyl]-4hydroxycoumarin) Xylene (xylol) X ylidinc--Skin Yttrium Zinc oxide fume Zirconium compounds (as Zr) 8-hour maximum average exposure Mg. per P .P .M .3 u. M. 10 100 -- -- 5 50 -- 1,000 __ 25 - 1,000 -- _ 1.5 -- 0.1 -- 3 100 -- _ 0.05 - 0.25 _ 0.5 _ 0.1 500 -- 100 -- -- 0.1 100 - 5 -- _ 1 _ 5 -- 5 NOTE: The word " Skin" following a su b sta n c e ' name in d icates that the substance can pene trate the skin to cause system ic effects. a P a rts of vapor or g a s per m illion p arts of air b; volume at 25C and 760 mm. Hg. p re ssu re . " Milligrams of particulate per cubic meter of air. PHD--Ch. 4-432 (amended January 25, 1968) 7 REGULATIONS FOR THRESHOLD LIMITS T able 1. (Continued) Mineral D usts Substance Silica C ry sta llin e Quartz (threshold lim it calculated from the form ula) Cristobalite (same) Amorphous, including natural diatomaceous earth Graphite S ilic ate s (le ss than 1% cry sta llin e silica) A sbestos Mica Soapstone Talc T rem olite Portland cement M iscellaneous (le s s than 1% crystalline silica) M .P.P.C .F.c 250 7cSiO,+5. 20 15 l 20 20 20 5 50 50 cM illions of p article s per cubic foot of air based on impinger samples counted by lighr-field techniques. 8 PHD--Ch. 4-432 (amended January 25, 1968) Substance Acetic acid Acetone Acrolein Acrylonitrile Ally 1 alcohol Ally 1 glycidyl ether (AGE) .Ammonia Amyl a c e ta te Amyl alcohol Aniline Benzene Benzoyl peroxide Beryllium Boron trifluoride Bromine 2-Butanone (MEK) 2-Butoxy ethanol (butyl cellosolve) Butyl acetate Butyl alcohol tert. Butyl alcohol Butylamine tert. Butyl chromate Cadmium oxide fume Calcium oxide Carbaryl (Sevin) Carbon disulfide Carbon monoxide Carbon tetrachloride Chlordane Chlorine Chlorine trifluoride Chloro ace tal de hyde Chloroform Cobalt Copper fume Cyanide (as CN) Cyclopentadiene DDVP Demeton (Systox) Diacetone alcohol o-Dichlorobenzene l,3-Dichloro-5,5- Dimethylhydanroin 1,1-Dichlotoe thane REGULATIONS FOR THRESHOLD LIMITS Table 2. Short-Term Limits Maximum average exposure for the time period specified L Mg. per " Time in P .P .M .3 Cu. M. m inutes 40 - 5 1,000 - 30 0.5 - 5 40 - 30 5 - 30 10 5 100 - 30 200 - 30 150 - 30 50 - 30 75 - 30 - 10 15 - 0.025 5 1 - 5 0.4 - 30 300 - 5 200 5 300 - 30 150 - 30 150 - 30 5 - 5 - 0.1 30 - 0.3 30 - 10 30 - 30 30 100 - 30 400 -- 15 25 - 30 -- 2 30 3 -- 5 0.1 -- 5 1 - 5 400 -- 30 - 0.5 30 - 0.1 30 - 5 30 200 - 15 - 3 30 - 0.5 30 150 - 30 50 _ 15 0.5 15 200 -- 30 Maximum av erage exposur for the time period specifi Substance 1,2-Dichloroethane (Ethylene dichloride) Dichloroethyl ether 1,1-Dichloro-l- nitroechane Dieldrin Diethyl amine Diglycidyl ether Diisobutyl ketone Dimethylamine Endrin EPN Ethyl acetate Ethyl acrylate Ethyl alcohol Ethylamine Ethyl benzene Ethylene diamine Ethylene glycol dinitrate and Nitroglycerin Ethylene glycol monomethyl ether acetate (Methyl Cellosolve acetate) Ethyl ether Ethylene imine Ethylene oxide N-Ethylmorpholine Fluoride Fluorine Formaldehyde F'urfural Furfural alcohol G asoline Heptachlor Heptane Hexane Hexanone (MBK) Hexone (MIBK) Hydrazine Hydrogen chloride Hydrogen cyanide Hydrogen fluoride Hydrogen sulfide Iodine P.P.M . 200' 35 10 - 100 0.5 50 20 1,000 50 5,000 25 200 20 0.2 50 1,000 5 200 20 0.5 5 15 50 500 500 500 200 400 I 5 20 3 20 0.1 Mg. p e r b Time Cu. M. minut - 30 - 30 - 30 1 30 - 30 - 5 - 30 - 5 0.5 30 2.5 30 15 - 15 - 15 - 30 - 30 - 5 - 30 - 30 - 30 - 30 - 30 - 15 10 30 - 5 - 5 - 15 - 15 - 30 2 30 - 30 - 30 - 30 - 5 - 30 - 5 - 30 - 15 - 5 - 5 PHD--Ch. 4-432 (amended January 25, 1968) 9 REGULATIONS FOR THRESHOLD LIMITS Table 2. (Continued) 1 o ofO o o\T\ Maximum average exposure for the time period specified Substance P.P.M ." Isopropyl glycidyl ether (IGE) Lindane Manganese Melvinphos (Phosdrin) Methyl acetate Methyl acrylate Methyl bromide Methyl cellosolve Methyl chloride Methyl chloroform ( 1 ,1 ,1-trichloroethane) Methylene bis phenyl- isocyanate (MDI) Methylene chloride (Dichloromethane) Methyl mercaptan Methyl methacrylate Methyl styrene Morpholine Naphtha (petroleum) Naphthalene Nickel carbonyl Nitric acid Nitrogen dioxide Octane Ozone Parathion Perchloroethylene Phosgene Phosphine Phthalic anhydride Propyl alcohol Pyridine Selenium compounds (as Se) Styrene monomer SuHur dioxide Sulfuric acid TEDP TEPP 1,1,2,2-Terrachloroethane Tetrahydrofuran Tin (inorganic compounds) Toluene OO 100 - 400 25 20 50 100 1,500 - 1,000 20 200 100 20 15 0.04 15 25 1 200 1 1 4 400 10 100 20 -- - 10 500 -- 600 Mg. per*5 Time In Cu. M. minutes - 1 5 0.5 -- - -- 0.25 - -- - 0.5 -- - - . -- 0.3 -- -- 3 1 0.25 _ -- 5 -- 30 30 30 30 5 30 5 30 5 5 5 30 5 15 30 15 30 5 5 5 5 30 30 30 . 30 5 30 5 30 30 30 5 5 5 30 30 30 30 30 30 Substance Toluene-2,4-diisocyanate (TDI) Trichloroethylene Triethyl amine Trinitrotoluene Vanadium (V.,0, dust and/or fume) Vinyl chloride Vinyl toluene Xylene 25inc oxide fume Maximum average exposure for th time period specified Mg. per*5 Time in P .P .M ." Cu. M. minutes 0.02 5 200 30 100 30 5 30 0.5 30 500 5 400 5 30 10 30 " P arts of vapor or gas: per million parts of air by volume at 25C and 760 mm. Hg. pressure. ^Milligrams of particulate per cubic meter cif air. 10 PUD--Ch. 4-432 (amended January 25, 1968)