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TOXICITY
SAFETY AND WILPARf
ENGINEERING STANDARD
77
MAXIMUM ACCEPTABLE CONCENTRATIONS 1EBUCO
OP AIR CONTAMINANTS
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1. GENERAL
1.1 Thi* ataidird providaa a list at Maximum iceaptablt eaaeaatntiota (MAC'*) of air cootamiaaata to ptovid* criuria for aaf* Compaap work anviroamaata. (MAC rtftra to th* maximua aeetplabla eoaeaatiatioa of air caataaioaata ia tka atmoapkar* of warkiay plaeaa from tko viawpoiat of occupatioaal diaaaaa prtvaatioa.)
2. INTERPRETATION OP MACS
2.1 Hi* liatad MAC* ara rteommtadod thrtthold limit ralaaa of th* Amarieaa Coafaroaeo of Govtra* maatal Industrial Hpyiaaiat* tad ara rtpriattd witk tkair parmiaaioa. Thai* valoaa ara raviowad aad ara pi^liakad aaaaally kp ACG1H, wick modifi. eatiaoa aad additions. if aay, to tko praviooa liat.
axparimaatal atudiaa, aad. wkoa poaaibl*. from t eomkiiatioa of tk* two. Tkoo* valata ar* kaaad at varioa* eritaria of toxic offaets or oo ptoaauaead discomfort; tkaa, tkap akaold aot b* uood to rank tka toxicity ar tk* pataatial kaaitk hazard at chemi
cal*. aor akoald tkap ka eoaaidtrad aa tka tola critariaa ia proviay or diapraviay diayaoaia of aoapoetad occtpatiooal diaaaaa. Nor ar* tk* tabalattd valaaa iataadad for ua*. or for modification for aao. ia tko ovolaatioa or eootroi of eommuoitp air pailatiea, aiac* otkar factor* bacom* important ia tkaa* problem*, auck aa prolonged txpoair* aad tko ay* aad kaaitk at aa iedividoai. Ia additioa. witk tk* coatrol of coocoatntioaa ia a eoouaiaitp to tko MAC voiaoa only, air-pollutioa aoiaancto may rtaait. (For ataay ekomieola tko odor throokold* ar* coaaidorakly below tk* MAC'*.)
2J Tka MAC* akaold ko aaod a* paid** ia tko caatial of patoatial koaith haxorda aad tkaald not ka raperdad a* fin* liaa* korwaaa aaf* aad dcayor. ** aaaaaatratioaa. It ia iaipartaat tkat tka takalatad MAC'* ka aaad witk diacratioa. aad ala* as kaaek nark* toward* tka aatabliakmaat of aaf* warkiag tavireomaats. Maap aitaatioaa map rayoir*. douiltd rovitw kp opaeialixad aayiaaar*, toxicologists, or katk, to avoid avar ar aadar doaiya of caatrol maaaaraa.
2J Ha ACGQf valaaa rapraaaat eeaditiooa oodor wkiek it ia boiiavad tkat aaatlp ail warkara map ko rapoatadlp axpoaad. dap altar dap, without advoraa offaet. Tka valaaa liatad rafar to timo* waiyktad avataya aaaaaatratioaa for a awal eifhtkaar workday. Aeeardiay ta ACGIH. tka omaaat kp wkiek tka liatad MAC* map ka asaaadad far akott panada witkaat lajorp ta kaaitk dapaada apoa a aamkor *f footors, aaok aa tka aatwa of tka *tamiaaat, wkatkar vary kiyk coatattrotioaa *v*a for *kon pariada prodac* acau poi**ai*y, wkatkar tka offsets an tamaiativ*, tka froyaeacp witk wkiak kiyk aaaaaatratioaa *etor, aad tk* daratiaa of aaok pariada. Tkorafaro, ft ia rocaawaadad ia tkia standard tkat tka amaoat kp wkiek tk* takalatad MAC* map aafalp k* asaaodad far akort daraeioaa ka fivaa additiaaal ovalaati** far iadividmai tuat. Far additl**al iafomatia* *a tka taxicitp of chemi cals, rofaraae* eaa k* and* u tk* Haskell Lake* ratarp far Tmicoloyp aad hdaatriai Madiaiaa.
2U Tluoakoid limita are kaaad aa tk* kaat availakl* iafotmatao* (torn iadaatrial txpariaoea, from
3. LIMITATIONS
3.1 Tk* liattd MAC** apply t* aoernal, kaaltky warkara aaly.
3.2 Where atat* coda* ar local plant ralas apeeify MAC* difftrtat from tkaa* ia Tablaa l through 3 tk* lowor of tk* two vaiooa akoald b* oaod for tk* doaiya of eootroi faeilitio*.
XI Spocial eoosidarotiaa akoald k* yivao to tko applicatiaa of tka racomaadad MAC valuta ia tk* avalaatia* of kaaitk haxarda what* tkar* ia txpoaart ta comkiaatiea* of two or mor* aabataacaa, bacaaa* offacta map k* diaprapartieaat* ta caacaatroda* of iadividaal ckamicala.
4. description of tables
4.1 Tk* rorommaadad MAC valuta ar* erraagad ia data aaetiaaa as follow*]
Takt* I -- Caaaa aad Vatari TaUa 1 -- Taxi* Dana. Fwar, aad Miata Takl* t -- Miami D*<a
4.2 Tk* dafiaitiooa of abbraviatioaa ia th* tablaa aad fotlowiay aampl* calealatioa* ar* yivaa balow:
PPM
Part* *1 vapor ar (ta par williaa pana
at air bp valaaa
Appraa My - AppmUmat* aUMpama par ca aatir
par Ca M
ai air
My par Ca M Milligrams par a* awtar af air
MPPCr
MilUaaa *< part*!** par ei ft af air.
kaaad aa implaftr aaaplaa cotatad
kp Uyktrflald ttekaiyaas
Mai th T
Malaaalar woiyhi Tampantan ai titbit sizar*.
*r aao
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DUP 0960011
DU 040321
S2T 9tfa 2
MAXIMUM ACCEPTABLE CONCENTRATIONS OR AIR CONTAMINANTS
APRIL 1961 Rv mt 1*42
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4.3 Scitplc CcUalattaa
4.3,1 Rlict coacratratios of taller dioxide (SOj) in ppm bp volume rtaalts from nixiag 0.01 lb per mis SO* with 1000 efm of ait at 70 dagreat F ud 29.!)2*ia. mereury prasaara?
PPM bp volume (SO*) !SL52i 10* e Air
1 lit mol of Iat
359 ca ft at 32*F a*4 29.92-ia. marcorp prateare
CFM SO*
2i * 359 a 460 * 70 64.1 460-32
0.060S
PPM bp voiuiaa(SO}) * 0.0 605 a 10 ,,60.5. 1000
44.2 A gaaaral formal* for caavarsioa of PPM to Mg par Cu M folloarai
Mg par Ca M 21.9 x Mol Wt a PPM
Mol Rt of SO*
64.1
Lb raoi SO* par mia 5^1
At normal room taiapaiatara of 70*P (S30*R) Mg par Ca M 0.0413 a Mat Vt a PPM
TAIL! 1 - CASES AND VAPORS
Subataaaa
PPM
AggraxMg par Ca M
Subataaaa
Aeataldeliyde Acatia acid
Aeatic anhydride Aaatana Aeetenitrile Acetylene tafrabroaiida Aeritn AeryiM*tri!*
Ally! alcohol* Ally1 ehliariala
Ally! glyirldyl ether Ally! prapyl 4itolfi4a Ammonia Aaiyl aealata Aaiyl eleuhel
(iaecmyl eicahel) Anilina*
Araina
200 10 5
1000 40 1 0.S 20 2 3
10 2 100 200
100 5 045
Benzene (banrel)
Salan iri iluerida BnaiM Bua4iana (1, 3 betadiano) 2-3utaniina
(methyl ethyl Itatwta) Butyl aeniala
(n-butfl ocaiala) Butyl alcahai
(a-Wwal) tart Butyl alcahai Butyiamaaa Butyl eailoaaWa
(2-huMxyathanat) a-Bwtyl jlycidyl othar Butyl awcaptan 0-tart Butyltaluana
25 1 1 0.1
1000
200
200
100 100
5
SO so 10 10
360 25 20
2400 70 U 1.2 45 5 IS 45 12 70
10S0
360 19 04
10 5 3 0.7
2200
590
990
300 300
15
240 270
35 40
Carbon dlozido Carbon disuifid** Carbon manaaida Carbon tatrachlarida* Cailaaaiva
(2-olho*yofHanoi) CrIUmIv# OROtttR
(2-aitioayarhyl aealata) Chlarine Chlarina dioaida
Qtlarin# trifluarida Chlaracataldahyda Chlarabantana
(laanaahiarabantana) Chlarofarm
(triahlaraaiattiana) 1 -Oilara- 1 -nitraprapana
Qtiarapicrin Chlarapranu (2-chlara* 1,
3-butodioim) Craial (all itaamri)* Cyclahaxano
Cyclohazonal Cyclahaaananu Cyclahaaano
Dccaborana* Oiacatana alcahai
(4--hydraay* 1 -methyl* 2-pantanana) Oibarano
1, 2-Oihraaiaatbana (athylanu dibrtmido)*
c-Oichlarabantana e-Oichtorebenxano Dlchiaradifluaraamlhanu 1, 1 -Oichloraathana
Indlettea that ilia lleuU tetmetwd ilia (tin aaaaa tyitaaHa adfaata
PPM
5000 20 100 10
200
too 1 0.1 0.1 1
75
SO 20 0.1
23 S
400 50 SO
400
0.05
SO 0.1
2S SO 75 1000 100
Appraa Mf per Cc M
9000 60 no 65
740
SCO 3 0.3 0.4 3
Uj
350
240
100 0.7
90 22 1400 200 200 1330
0.3
-7<
240 0.1
-a: Q
190
300 4S0 4990 COO
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S2T Paa* 1
table - CASES AND VAPORS (CONT'O)
Subttaaca
FFM
Approx Mp par Cu M
Subttenc*
1, 2-Dichlere*than* (tthylan* dichlarida)
1, 2-Diehl*ro*fhyl*n* Dichleraethyl afhar Dichlereraonefluaramathan* 1, 1-Diehl*r*-
1 -nitre*thane Diehlerat*tr*fly*r**than* Diathylaeiin* Di1lu*r*dibf*fl*ai*thcn* Diglycidyl ether Diitabgtyl katana OiaMthylenilin*
(n-dimothylani line)* Dimcthylfarmainid* 1, 1-Oitnethylhydraxina* Dimathylaulfeta* Diprepylan* glycal
methyl ether Diaaen* (diathylan*
diMide)
Ethyl acetate Ethyl acrylate' Ethyl alcahal (tthenal) Ethylamin* sthylbanxen* Ethyl bromide Ethyl elilwM* Ethyl tfhr
Ethyl mercaptan Ethyl tilicit* Ethylene chtarahydrin* Ethylanediaaun* Ethylene dibroaiid*
(1, 2-dike----then*) Ethyl*** glycol dinitret*' Ethyl*** Maine* Ethylene Mid*
Fluorine F lueteirichlaramathane Fanaaldahyde Furfural Pwrfaryl alcahal
Gaaeline Gtycidal (2, 3-*pay-
l-grapenel)
Hapten* (-h*prawa) Hum (a-hexan*) Haxanana (icaihyl butyl
katana) Hexene (laathyl iaahutyl
katana)
SO 200
15 1000
10 1000
25 100
10 50
5 20
0.5 1
100
100
400 25
1000 25
200 200 1000 400 100 250 100
5 10
25 0.2 5 50
0.1 1000
55 50
500
50
500 500
100
100
200 790 90 4200
60 7000
75 860
55 290
25 60
1 5
600
360
1400 100 1900 45 870 890 2600 1200 300 640 850
16 30
190 1.2 9
90
0.2 5600
6 20 200
2000
150
2000 1800
410
410
Hydraxina* Hydrogen bromide Hydrogen chlarid* Hydrogen cyanIda* Hydrogen 1luorid* Hydrogan parMido, 90S Hydrogen lalanido Hydrogen lulfida
ladin* Icapharan* Ipaprepyiamine
Maaityl Mid*
Methyl acetate Methyl acotylana Methyl acrylate* Mathylai
(dimethoxymethan*) Methyl alcahal (amthenol) Methyl hroaida* Methyl c*llacal*
(2-m*th*xy*th*n*l) Methyl cailoaaiva acstata
(othylan* yiycal maneethyl other acatota) Methyl chlarid* Methyl chlarafana (1, 1, 1 --trichl*r**th*ne) M+tfcylcyctahvxvm MathylayclahManal
Mothyicyclahoaonan* Methyl ethyl katana (to*
2-Butanana) Methyl faraat* Methyl Itobutyl earbinal
(mathyl aatyl alcahal) Mathyl norcaptaa a-Methyl ctyran* Methyl*** ehlarid*
(dichlaramathano) Manawaihyl aniline*
Naphtha {coal tar) Naphtha (petroleum) Nickel carbonyl Nitric acid p-Nitreaniline* Nitrahancana* Nitre*than* Nitrayan diaxid* Nitroglycerin* Nitreatethan* 2-Nitroprapan* Nitretaluane*
* that #* IlfyU --tmmni 9m tmwwt A. .kM ta m.. .y...M
PPM
1 3 5 10 3 1 0.05 20
0.1 25
5
25 200 1000
10
1000 200 20
25
Apprai Mg
1.3 10 7 11 2
1.4 0.2 30
1 140
12
100 610 1650 35
3100 260
80
B0
25 120 100 210
no 2700 no 2000 100 470 100 460
100
25 50 100
500 2
200 500
0.001 10 1 1 too 5 0.2 100 25 5
250
100 100
480
1730 9
800 2000
0.007 25 6
5 310
9 2 250 90 30
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DUP 0960013
DU 040323
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MAXIMUM ACCIPTABLI CONCINTRATIONS Of* AIR CONTAMINANTS
ANIL 1941 Rea May Ittl
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Subctana*
Oetan* Cion*
Ponton* Pontonon* (methyl propyl
korono) Perehlaraathylana
(tetreehloreethylene) Perchlaranathyl mpreoptan Phonal* Phonyl flyiidyl athar Phony Ihydiaxine* Phoifon* (carbonyl
chloride] Phosphine PHoppherun trlehlprid* Propyl aeo'oto Propyl oicohoi
(ioopropyl olcohol) Propyl othor
(ioopropyl other) n-Propyl nitrot* Propylon* iliohiarid*
(1, 2-dithlerpprepon#) Propylon* mine* Propylon* <xide Pyridln#
Quinon*
TAILI 1 - CASH AND VAPORS (CONT'O)
PPM
Appro* Mf per Ce M
Subctene*
PPM
500 0.1
1000
200
100 u*l s 50 s
\ o.os OJ 200
40Q
500 23
2330 0.2
2930
700
470 u*S 19
310 22
4 0.07 3 840
900
2100 110
Stibin* Stoddard solvent Styr*n* m*n*m*r
(ph*nyl*fhyl#ne) Sulfur dioxide Sulfur h*aaflu*rid* Sulfur ernmchlerid* Sulfur p*ntpflu*rid*
0.1 500
100 5
1000 1 0.023
1, 1, 2, 2-T*rrachlare*thn** 3
T*trehydr*fur*
200
Tetrenhranwrthan*
1
Teluen* (talual)
200
a--Taluidin**
S
Tolylone*
2, 4-diicacyenat*
0.02**
Trichlareathylan*
100
1, 1, 2-Trichler* 1, 2,
2-trifluaraethan**
1000
Triathylamin*
23
Trifluercmcnebreme*
mathena
1000
Turpentine
100
75 25 100
5
0.1
330 40 240 U
0.4
Vinyl chlarid* (chiaraethylana)
Vinyl t*lucn*
Xylan* (xylol) Xylidina*
S00 100
200 5
Approx Mf per Cv M
0.3 2900
420 13
4000 4 0.23
33 590
8 730
22
0.14** 520
7400 100
4100 560
1300 480 870
23
TAIL! 2 - TOXIC DUSTS. PUMRS AND MISTS
SebctMM*
M*P*r Co M
Sehoteeoe
Aldrin (1, <!, 3. 4, 10, 10-ho**hl#rw 1, 4, 4*, 5,1, Sa-hoxafrydro- 1, 4, S !-dixieftenenephlhelene)*
Ammefe (arunonium lulfpmnt*) Antimony ANTU (alpite-nophthyl thiour**)
Artonl*
Barium (soluble cempeueds) Borylllgoi Boron uidtt
Cadmium oui4* him*
Calcium erutnef* Oilerdane (1, 2, 4, 3, 4, 7,1, 8-ectedila
3o, 4, 7, 7o-t*tTohy4r* 4, 7-methaneIndent) Chlorinated camphene, 60* Chlorinated diphenyl exid* Chlerediptuinyi (43* chlorine)* Chlorodiphtmyi (54* chlorine)*_________
0.2S
IS 0.S 0J 0.S 0.5 0.002 IS 0.1 I
0.S 0.3 0.3 1 0J
Chromic *ci4 end ehroowtoo (oo CrOj) Cre* herbicide (lodium 2- [2, 4--dichier*-
ph*n*xylj othmol hydrefen oulfat*) Cy*nid* (a* Cn)*
2,4-0 (2, 4--dichlerophonaxycccHc acid) DOT (2, 2-bit fp-ctilerophonyl]
-I, I, I -trichlereethene) Oieldrin (1, 2, 3, 4, 10, I0-hoa*chl*ro>
6, 7 epoxy I, 4, 4*, S, 4, 7, 8, 8o-- octahydro- I, 4, 5, 8-diamfhaa** naphthalene)' Oinitrobonxono* Olnitrotoluono* Clnitre-a-creiai*
EPN (O-othyl O-p-nitrephonyl thianobontonephotphenato)*
M* por CaM 0.1 13 3 10 1
0.2S 1 1.5 0.2
0.5
Indicator that the llpeid oompeead eon penetrate tho thin to oauaa lyotoai* effects
Ptehohly tuHlelontty lev to protael ooeinol
eneitlssHee, hut may net prototo paroaaa tpaellloally oonoititad
DUP 0960014
CONFIDENTIAL
DU 040324
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MAXIMUM acceptable concentration OP AIR CONTAMINANTS
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TABLE 2 - TOXIC POSTS, PUMH AND MISTS (CONT'Q)
Substanc*
Farbam (ferric dimethyl dlthieearbamata) Farravonadium dust Fluoride
Hydrepuinane
Iran axid* fuma
Lead Load arsanat* Linden* (hexachlaracyclahexana,
gamsM isomer) Lithium hydride
Magnesium aside fume Maiathian (0, O-dimethyl dithiephesphat*
of diethyl oiereaptesuceinate)* Manganese Mercury Mercury (organic compounds)* Mathaxychlar (2, 2-di-p-amthaxyphanyl.
1, 1, lotrichiareathana) Malybdanum
(saiubl# campounds) (insoluble compounds)
Nicotine*
Perathlen (0, O-diethyL O-p-nitr*. phenyl thiaphesphoto)*
Pantaeh laransphthaiene* Fentashlerephenel* Phaspharic acid Phespherus (yellow) Phosphorus panteehlorid* Phosphorus pantssulfid* Picric acid Pyrathrum
Mg per Cu M
15 1 2.5
2
IS
0.2 0.15
0.5 0.025
15
15 5 0.1 0.01
15
5 15
0.5
0.1 0.5 0.5 1 0.1 1 1 0.1 5
Substance
Rotation*
Selenium compounds (at Sa) Sodium fluareacarata (10(0)* Sodium hydrasid* Strychnin* Sulfuric acid
TEDP (tetraethyl dithianapyraphesphata)* TEPP (fatroathyl pyrophosphate)* Talluriuai Tatryl (2, 4, 6-trinitrophenylmathyl-
nitramina)* Thciliuai (soluble compound*) Thirai* (tatramethyl thiursn ditulfida) Titcniuai dioxide Triehlaranapbthalana* Trinitrotoluene* Triarthecresyi pha*phta Triphanyl phosphate
Uranium (soluble compounds) (insoluble cssmeunds)
Vanadium (V:0| dust) (VjO, fuarn)
Warfarin (3- [a-acatanyIbanzyl ] -S-- hydrasycaumarin)
Yttrium
Zinc aiida fuma Zircanium compound* (a* Zr)________
M M' Cu M
O.t 0.05 2 0.15 1
0.2 0.05 0.1
1.5 0.1 S 15 5 1.5 0.1 3
0.05 0.25
0.5 0.1
0.1
5
5 5
Radioactivity! Far permissible cancantratian* af radiaitatapa* in air, sa* U. 5. Popartman! af Coaunoret, National Suraau of Standards, Handbook 69, Maaimum Permissible Body Burdans and Maximum Permissible Cancantratian* of Radianualida* in Air and in Watar far Occupational Exposure, Juna 5, 1959. Alia, iaa
U. 5. Oapartmant af Camawrca, National Suraau af Standards, Handbook 59, Permissible Das* from External Saurcas af Ionising Radiatisa, September 24, 1954, and addendum af April 15, 1951.
_____TABLE 3 - MINERAL OUSTS
Sabtana Silica
Crystalline Quarts and erlstabalita, threshold limit ealeulatad from th* famtula
Amarphau*. including natural diataamcasu* earth
MPPCF**
250 RSiOj
20
Siliaata* (lass than 1% crystalline silica) Asbestos Mica Saepstano Talc Portland eamant
Miscellaneous (lass than HI crystalline silica)
5 20 20 20
50
Netet Th* pereantag* af crystallin* silica in the abava faratula and tables is based an the amount found from an analysis af tit* airborne dust
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DU 040325