5 PROPOSED ADMINISTRATIVE RULES

DE PARTMEN T OF CONSU MER AND INDUS TRY SER VIC ES DIRECTO R’S OFF ICE

OCC U PATIO NAL HEALT H STAND ARDS —AIR CONTAMI NANTS FOR CONS TRU CTIO N

Filed with th e Secretar y of Stat e on

This ru le tak es effect 7 days after fili ng with th e Secretar y of Stat e

(By auth ority conferr ed on th e director of th e dep artm ent of con sum er an d industr y services by sections 14 an d 24 of 1974 PA 154 an d Execut ive Reorgan izat ion Orders Nos. 1996 -1 an d 1996 -2, MCL 408 .1014 , 408 .1024 , 330 .3101 , an d 445 .2001 )

~~R u le 6201 G a ses , Va por s, Fum es , D u s t s, an d Mis t s.~~

R 325 .60151 CONSTRUCTIO N AIR CONTAMI NANTS.

RULE 1. (1) AN EMPLOYER SHALL EN SUR E THAT EMPLOYEE exposur eS of

~~e m p loyee s~~ to inha lat ion, ingestion, skin absorption, or conta ct with an y mat erial or subs tan ce at a concentrat ion above those specified in th e "Thr es hold Limit Values of Airborn e Contam inant s for 1970 " of th e American Conference of Governm enta l Industr ial Hygie nists, as listed in R 325 .60154 to R 325 .60161 , ar e avoided. ~~See E x h ibi t I at th e e n d~~ ~~of th i s p art fo r spe cific s u bs tan ce li s t i n g~~. ~~[1926 .55( a )]~~

(2) To achieve com pliance with ~~s u bse c t io n~~ SUBRUL E (1) of th is ru le, AN EMPLOYER SHALL EN SUR E THAT administrat ive or engineering contr ols ~~mu s t fi r s t be~~ ARE implement ed whenever feasible. ~~W h e n~~ IF administrat ive or engineering contr ols ar e not feasible to achieve full com pliance, THEN protective equipment or oth er protective measur es sha ll be used to keep th e exposur e of employee s to air contam inant s with in th e limits prescribe d in th is ru le. Any equipment an d techn ical measur es used for th is pur pose ~~mu s t~~ SHALL first be app roved for each part icular use by a com petent industr ial hygie nist or oth er techn ically qua lified person. ~~W h e n eve r~~ Respi rat ors ~~ar e~~ SHALL BE used, ~~th ei r u se~~ ~~s ha ll co m p ly wi th R u le 6501 (3). [1926 .55(b)]~~ IN A MANNE R THAT IS IN COM PLIANCE WITH R 325 .60051 ET SEQ., PART 451 . RESPIRATORY PROT ECTIO N.

(3) ~~Spe ci a l p r ovi s io n s of a i r co ntam i nant s.~~

(a) Asbes tos dust. Rule 2205 of th e MIOS HA Occu pat iona l Health Stan dar ds for Genera l Industr y sha ll apply to th e exposur e of every employee to asbes tos dust in every employment an d place of employment cove red by th ese ru les in lie u of an y different stan dar d on exposur e to asbes tos dust which would oth erwise be applicable by virtu e of subsection (1). [1910 .19(a)] [1926 .55(c)]

(b) ~~Vi n yl C h lo r i de. R u le 2260~~ R 325 .51401 ET SEQ., PART 302 . VINYL CHLORID E, of th e MIOS HA Occu pat iona l Health Stan dar ds for Genera l Industr y applies to th e exposur e of every employee to vinyl chloride in every employment an d place of employment covered

by th ese ru les in place of an y differ ent stan dar d on exposur e to vinyl chloride that would oth erwise be applicable by virtu e of ~~s u bse ct ion~~ SUBRUL E (1) of th is ru le. ~~[1910 .19 (b)]~~ ~~[1926 .55 (c)]~~

(4) THE SE RULE S REP LACE O.H. RULE 6201 . EXHIBIT I

(5) The “Thr eshold Limit Values (TLV) of th e American Conference of Governm enta l Industr ial Hygienists (A.C.G.I.H .) for 1970 ” were adopted by th e Michigan Dep artm ent of Pu blic Health , effect ive J un e 10, 1971 , an d appe ar at ~~R 325 .2411 -R 325 .2419~~ R 325 .60153 to R 325 .60161 . ~~F or your con ve n ie n ce an d r e fe r e n ce th ese~~ THE Thr eshold Limit Values ident ified in th ese administrat ive ru les as Maximum Allowable Concentrat ions (MAC) ar e specified in th e ru les that follow.

R 325 .60152 DEF INITIONS PE RTAINING TO CONTAMINANTS. RULE 2. AS USE D IN THE SE RULES:

(a) “MAXIMUM ALLOW ABLE CONCEN TRATIO N” OR “MAC” MEANS THE THRESHOLD LIMIT VALUE OR THE TIM E-WEIGHTED AVERAGE 8-HOUR AIRBORN E CONCEN TRATIO N OF A CONTAMINANT TO WHICH A PE RSO N MAY BE SAFE LY EXPOSED.

(b) “Mg/m 3” MEANS MILLIGR AMS OF PARTIC ULATE PE R CUBIC ME TE R OF AIR.

(c) “MPP CF” MEANS MILLIO NS OF PARTIC ULATES PE R CUBIC FOOT OF AIR BASED ON IMPING ER SAMPLES COUN TED BY LIG HT FIELD MICROSCO PIC TECHN IQU ES.

(d) “NON-RESPIRABLE ATMOS PHE RE” MEANS AN ATMOS PHE RE WHICH CONTAINS INSU FF ICI EN T OXYGEN , OR AN ELEVATED LEVEL OF CONTAMINANTS WHICH MAY REN DER A PE RSO N INC APABLE OF SELF- RE SCU E .

(e) “PP M” MEANS PARTS OF VAPOR OR GAS PE R MILLIO N PARTS OF AIR BY VOLUME AT 25 DEGREE S CELSI US AND 760 MILLIM ETERS OF MERCURY P RE SSUR E .

(f) “SOURC E” MEANS A PROC ESS OR EQUIP MEN T THAT RELEASES A CONTAMINANT INTO THE AIR IN CONCEN TRATIO NS EXCEE DING THE MAC.

~~R 325 .24ll~~ R 325 .60153 Contam inant s; exposur es; MAC.

Rule 11 3. (1) AN EMPLOYER SHALL NOT ALLOW AN EMPLOYEE TO BE EXPOSED TO A CONTAMINANT AT CONCEN TRATIO NS IN EXCESS OF THE MAC

AS LIST ED IN R 325 .60154 TO R 325 .60161 . ~~An e m p loye r s ha ll n ot a llow th e exp os ur e of~~ ~~a pe r s on t o con ce ntrat ion s of a contam inant in excess of th e lim it exp r essed by th e~~ ~~contam inant 's M AC a s es ta blis h ed in R u le s 12 an d 19 .~~

(2) An employer sha ll not a llow ~~th e exp os ur e of a pe r s on~~ AN EMPLOYEE TO BE EXPOSED to a contam inant or com binat ion of contam inant s in con centrat ions that ar e ha zar dous or injur ious to th e person's health .

~~R 325 .2412~~ R 325 .60154 Maximum a llowable con centrat ions.

Rule 12 4. (1) Maximum a llowable concentrat ions of air contam inant s based on a repe at ed 8-hour work day exposur e ar e listed in ta bles 1 to 7 in ~~R u le s 13 t o 19~~ R 325 .60155 TO R 325 .60161 .

(2) A substan ce in ta bles 1 to 6 ~~in R u le s 13 t o 18~~ that is preceded by th e lett er A, C, or S is an espe cially ha zar dous contam inant an d ALL th e following precaut ions sha ll be tak en:

(a) If th e substan ce is preceded by th e lett er "A", ~~th e~~ THEN AN employer sha ll ~~n ot a llow a~~ ~~pe r s on~~ EN SUR E THAT AN EMPLOYEE or an y part of ~~h is~~ AN EMPLOYEE ’S anat omy ~~t o~~ be IS NOT exposed to, or a llowed to com e in conta ct with , th e substan ce by MEANS OF an y respi rat ory, ora l, or skin rout e.

(b) If th e substan ce is preceded by th e lett er "C", THEN it s MAC mean s th e highest concentrat ion at which an employer ma y a llow a person to be exposed at an y t ime. THIS CONCEN TRATIO N IS COMMO NLY REFE RRED TO AS A “CEILING .”

(c) If th e substan ce is preceded by th e lett er "S", THEN an employer sha ll ~~p r ovide~~ ~~n ecess ar y~~ EN SUR E THAT precaut ions ~~a ga in s t~~ ARE TAKEN TO PREVEN T sk in absorption ~~of th e contam inant by a pe r s on~~.

~~R 325 .2413~~ R 325 .60155 Maximum a llowable concentrat ions for substan ces; A an d B. Rule 13 5. Table 1. Substan ces A an d B

Substance

Abate Acetaldehyde Acetic acid Acetic anhydride Acetone Acetonitrile

MAC

ppm				mg/m3
---				15
200				360
10				25
5				20
1,000				2,400
40				70

Acetylene Inert gas

Acetylene dichloride, see 1,2-Dichloroethylene

Acetylene tetrabromide 1 14

Acrolein 0.1 0.25

S Acrylamide --- 0.3

S Acrylonitrile (SEE R 325.51501 ET SEQ.*) 20 45

S Aldrin --- 0.25

S Allyl alcohol 2 5

Allyl chloride 1 3

C Allyl glycidyl ether (AGE) 10 45

Allyl propyl disulfide 2 12

Alundum, (Al203) Inert dust

2-Aminoethanol, see Ethanolamine

2-Aminopyridine 0.5 2

Ammonia 50 35

Ammonium sulfamate (amate) --- 15

n-Amyl acetate 100 525

sec-Amyl acetate 125 650

S Aniline 5 19

S Anisidine (o,p-isomers) --- 0.5

Antimony & compounds (as Sb) --- 0.5

ANTU (alpha naphthyl thiourea) --- 0.3

Argon Inert gas

ARSENIC, INORGANIC COMPOUNDS (SEE R 325.51601 ET SEQ.*)

Arsenic, ORGANIC compounds (as As) --- 0.5

Arsine 0.05 0.2

S Azinphos-methyl --- 0.2

Barium (soluble compounds) --- 0.5

S,C Benzene (benzol) (SEE R 325.77101 ET SEQ.*) 25 80

A,S Benzidine --- ---

P-Benzoquinone, see Quinone

Benzoyl peroxide --- 5

Benzyl chloride 1 5

Beryllium --- 0.002

Biphenyl, see Diphenyl

Bisphenol A, see Diglycidyl ether

Boron oxide --- 15

Boron tribromide 1 10

C Boron trifluoride 1 3

Bromine 0.1 0.7

Bromine pentafluoride 0.1 0.7

S Bromoform 0.5 5

Butadiene (1,3-butadiene) (SEE R 325.50091 ET SEQ.*)~~1,000~~ ~~2,200~~ Butanethiol, see Butyl mercaptan

2-Butanone 200 590

S 2-Butoxy ethanol (butyl cellosolve) 50 240

Butyl acetate (n-butyl acetate) 150 710

sec-Butyl acetate 200 950

tert-Butyl acetate 200 950

Butyl alcohol 100 300

sec-Butyl alcohol 150 450

tert-Butyl alcohol 100 300

S,C Butylamine 5 15

S,C tert-Butyl chromate (as Cr03) --- 0.1

n-Butyl glycidyl ether (BGE) 50 270

Butyl mercaptan 0.5 1.5

p-tert-Butyltoluene 10 60

A See R 325.60154(2). C See R 325.60154(2). S See R 325.60154(2).

* CAUTION--THESE RULES CONTAIN EXTENSIVE REQUIREMENTS FOR EXPOSURE TO THESE SUBSTANCES.

~~R 325.2414~~ R 325.60156 Maximum allowable concentrations for substances; C and D. Rule 14 6. Table 2. Substances C and D

MAC

Substance ppm mg/m3

Cadmium (metal dust and soluble salts)

(SEE R 325.51851 ET SEQ.*) ~~0.2~~

C Cadmium oxide fume (as Cd)(SEE R 325.51851 ET SEQ.*) ~~0.1~~

Calcium arsenate --- 1

Calcium carbonate Inert dust

Calcium oxide --- 5

Camphor (synthetic) 2 ---

Carbaryl (Sevin®) --- 5

	Carbon	black	---	3.5
	Carbon	dioxide	5,000	9,000
S	Carbon	disulfide	20	60

Carbon monoxide 50 55

S,C Carbon tetrachloride 10 65

Cellulose (paper fiber) Inert dust

S Chlordane --- 0.5

S Chlorinated camphene --- 0.5

Chlorinated diphenyl oxide --- 0.5

Chlorine 1 3

Chlorine dioxide 0.1 0.3

C Chlorine trifluoride 0.1 0.4

C Chloroacetaldehyde 1 3

alpha-Chloroacetophenone (phenacylchloride) 0.05 0.3

Chlorobenzene (monochlorobenzene) 75 350

o-Chlorobenzylidene malononitrile (OCBM) 0.05 0.4

Chlorobromomethane 200 1,050

2-Chloro-1,3-butadiene, see Chloroprene

S Chlorodiphenyl (42% Chlorine) --- 1

S Chlorodiphenyl (54% Chlorine) --- 0.5

1-Chloro-2,3-epoxypropane, see Epichlorohydrin 2-Chloroethanol, see Ethylene chlorohydrin Chloroethylene, see Vinyl chloride

C Chloroform (trichloromethane) 50 240

1-Chloro-1-nitropropane 20 100

Chloropicrin 0.1 0.7

S Chloroprene (2-chloro-1,3-butadiene) 25 90

Chromic acid and chromates (as Cr03) --- 0.1

Chromium, sol. chromic & chromous salts (as Cr) --- 0.5

Metal & insol. salts --- 1

Coal tar pitch volatiles (benzene soluble fraction: anthracene, BaP, phenanthrene, acridine, chrysene, pyrene) --- 0.2

Cobalt, metal fume & dust --- 0.1

COKE OVEN EMISSIONS (SEE R 325.50101 ET SEQ.*)

Copper fume --- 0.1

Dusts and mists --- 1

Corundum (Al203) Inert dust

Cotton dust (raw) --- 1

Crag® herbicide --- 15

S Cresol (all isomers) 5 22

Crotonaldehyde 2 6

S Cumene 50 245

S Cyanide (as CN) --- 5

Cyanogen 10 ---

Cyclohexane 300 1,050

Cyclohexanol 50 200

Cyclohexanone 50 200

Cyclohexene 300 1,015

Cyclopentadiene 75 200

2,4-D --- 10

S DDT (DICHLORODIPHENYLTRICHLOROETHANE) --- 1

DDVP, see Dichlorvos

S Decaborane 0.05 0.3

S Demeton® --- 0.1

Diacetone alcohol (4-hydroxy-4-methyl-2-pentanone) 50 240

1,2-Diainoethane, see Ethylenediamine

Diazomethane 0.2 0.4

	Diborane						0.1	0.1
S,C	2-Dibromoethane (ethylene			dibromide)			25	190
	Dibutyl phosphate						1	5
	Dibutyl phthalate						---	5
C	Dichloroacetylene						0.1	0.4
C	o-Dichlorobenzene						50	300
	p-Dichlorobenzene						75	450
	Dichlorodifluoromethane						1,000	4,950
	1,3-Dichloro-5,5-dimethyl			hydantoin			---	0.2
	1,1-Dichloroethane						100	400
	1,2-Dichloroethane						50	200
	1,2-Dichloroethylene						200	790
S,C	Dichloroethyl ether						15	90
Dichloromethane, see Methylene chloride
	Dichloromonofluoromethane						1,000	4,200
C	1,1-Dichloro-l-nitroethane 1,2-Dichloropropane, see Propylene dichloride Dichlorotetrafluoroethane						10 1,000	60 7,000
S	Dichlorvos (DDVP)						---	1
S	Dieldrin						---	0.25
	Diethyl						25	75
S	Diethylamino, ethanol						10	50
S,C	Diethylene triamine Diethyl ether, see Ethyl ether Difluorodibromomethane						10 100	42 860
C	Diglycidyl ether (DGE) Dihydroxybenzene, see Hydroquinone Diisobutyl ketone						0.5 50	2.8 290
S S	Diisopropylamine Dimethoxymethane, see Methylal Dimethyl acetamide						5 10	20 35
S	Dimethylamine Dimethylaminobenzene, see Xylidene Dimethylaniline (N-dimethylaniline)						10 5	18 25
	Dimethylbenzene, see Xylene Dimethyl-1,2-dibromo-2,2-dichloroethyl phosphate						---	3
	(Dibrom®)
S S	Dimethylformamide 2,6-Dimethylheptanone, 1,1-Dimethylhydrazine		see		Diisobutyl	ketone	10 0.5	30 1
	Dimethylphthalate						---	5
S	Dimethylsulfate						1	5
S	Dinitrobenzene (all	isomers)					---	1
S	Dinitro-o-cresol						---	0.2
S	Dinitrotoluene						---	1.5
S	Dioxane (diethylene	dioxide)					100	360
	Diphenyl						0.2	1
	Diphenyl amine						---	10

Diphenylmethane diisocyanate, see Methylene bisphenyl isocyanate (MDI)

S	Dipropylene glycol methyl ether	100	600
	Di-sec,octyl phthalate (di-2-ethylhexylphthalate)	---	5

A See R 325.60154(2). C See R 325.60154(2). S See R 325.60154(2).

* CAUTION--THESE RULES CONTAIN EXTENSIVE REQUIREMENTS FOR EXPOSURE TO THESE SUBSTANCES.

~~R 325.2415~~ R 325.60157 Maximum allowable concentrations for substances; E to H. Rule 15 7. Table 3. Substances E to H

MAC

Substance ppm mg/m3

	Emery		Inert	dust
S	Endosulfan (Thiodan®)		---	0.1
S	Endrin		---	0.1
S	Epichlorohydrin		5	19
S	EPN		---	0.5
	1,2-Epoxypropane, see	Propylene oxide
	2,3-Epoxy-l-propanol,	see Glycidol
	Ethane		Inert	gas

Ethanethiol, see Ethyl mercaptan

Ethanolamine 3 6

S 2-Ethoxyethanol 200 740

S 2-Ethoxyethylacetate (cellosolve acetate) 100 540

Ethyl acetate 400 1,400

S Ethyl acrylate 25 100

Ethyl alcohol (ethanol) 1,000 1,900

Ethylamine 10 18

Ethyl sec-amyl ketone (5-methyl-3-heptanone) 25 130

Ethyl benzene 100 435

Ethyl bromide 200 890

Ethyl butyl ketone (3-heptanone) 50 230

Ethyl chloride 1,000 2,600

Ethyl ether 400 1,200

Ethyl formate 100 300

Ethyl mercaptan 0.5 1

Ethyl silicate 100 850

Ethylene Inert gas

S Ethylene chlorohydrin 5 16

Ethylenediamine 10 25

Ethylene dibromide, see 1,2-Dibromoethane Ethylene dichloride, see 1,2-Dichloroethane

S,C Ethylene glycol dinitrate and/or Nitroglycerin 0.2

Ethylene glycol monomethyl ether acetate, see Methyl cellosolve acetate

S	Ethyleneimine					0.5	1
	Ethylene oxide (SEE R 325.51151 ET SEQ.*)					50	90
	Ethylidine chloride,	see	1,1-Dichloroethane
S	N-Ethylmorpholine					20	94
	Ferbam					---	15
	Ferrovanadium dust					---	1
	Fibrous glass					Inert	dust
	Fluoride (as F)					---	2.5
	Fluorine					0.1	0.2
	Fluorotrichloromethane					1,000	5,600
C	Formaldehyde (SEE R 325.51451			ET	SEQ.*)	5	6
	Formic acid					5	9
S	Furfural					5	20

Furfuryl alcohol 50 200

Gasoline (~~MAC~~ LIMITS will be based on aromatic hydrocarbons in mixture)

Glycerine mist Inert mist

Glycidol (2,3-epoxy-l-propanol) 50 150

Glycol monoethyl ether, see 2-Ethoxyethanol

Graphite (synthetic) Inert dust

Guthion®, see Azinphos-methyl

Gypsum Inert dust

Hafniun --- 0.5

Helium Inert gas

S Heptachlor --- 0.5

Heptane (n-heptane) 500 2,000

S Hexachloroethane 1 10

S Hexachloronaphthalene --- 0.2

Hexane (n-hexane) 500 1,800

2-Hexanone 100 410

Hexone (methyl isobutyl ketone) 100 410

sec-Rexyl acetate 50 300

S Hydrazine 1 1.3

Hydrogen Inert gas

Hydrogen bromide 3 10

C Hydrogen chloride 5 7

S Hydrogen cyanide 10 11

Hydrogen fluoride 3 2

Hydrogen peroxide 1 1.4

Hydrogen selenide 0.05 0.2

Hydrogen sulfide 10 15

Hydroquinone --- 2

A See R 325.60154(2). C See R 325.60154(2). S See R 325.60154(2).

* CAUTION--THESE RULES CONTAIN EXTENSIVE REQUIREMENTS FOR EXPOSURE TO THESE SUBSTANCES.

~~R 325.2416~~ R 325.60158 Maximum allowable concentrations for substances; I to M.

Sub	Rule 16 8. Table 4. Substances	I	to	M		MAC	mg/m3
	stance				ppm		mg/m3
	Indene				10		45
	Indium and compounds (as In)				---		0.1
C	Iodine				0.1		1
	Iron oxide fume				---		10
	Iron salts, soluble (as Fe)				---		1
	Isoamyl acetate				100		525
	Isoamyl alcohol				100		360
	Isobutyl acetate				150		700
	Isobutyl alcohol				100		300
	Isophorone				25		140
	Isopropyl acetate				250		950
	Isopropyl alcohol				400		980
	Isopropylamine				5		12
	Isopropyl ether				500		2,100
	Isopropyl glycidyl ether (IGE)				50		240

Kaolin Inert dust

Ketene 0.5 0.9

	Lead arsenate		---	0.15
	Limestone		Inert	dust
S	Lindane		---	0.5
	Lithium hydride		---	0.025
	L.P.G. (liquified petroleum	gas)	1,000	1,800
	Magnesite		Inert	dust
	Magnesium oxide fume		15	15
S	Malathion		---	15
	Maleic anhydride		0.25	1

C Manganese and compounds (as Mn) --- 5

Marble Inert dust

S Mercury --- 0.1

S Mercury (organic compounds) --- 0.01

Mesityl oxide 25 100

Methane Inert gas

Methanethiol, see Methyl mercaptan

Methoxychlor --- 15

2-Methoxyethanol, see Methyl cellosolve

Methyl acetate 200 610

Methyl acetylene (propyne) 1,000 1,650

Methyl acetylene-propadiene mixture (MAPP) 1,000 1,800

S Methyl acrylate 10 35

Methylal (dimethoxymethane) 1,000 3,100

Methyl alcohol (methanol) 200 260

Methylamine 10 12

Methyl amyl alcohol, see Methyl isobutyl carbinol

Methyl (n-amyl) ketone (2-heptanone) 100 465

S,C Methyl bromide 20 80

Methyl butyl ketone, see 2-Hexanone

S Methyl cellosolve 25 80

S Methyl cellosolve acetate 25 120

C Methyl chloride 100 210

Methyl chloroform 350 1,900

Methylcyclohexane 500 2,000

Methylcyclohexanol 100 470

S o-Methylcyclohexanone 100 460

METHYLENEDIANILINE (MDA) (SEE R 325.51651 ET SEQ.*)

	Methyl	ethyl ketone (MEK),			see 2-Butanone
	Methyl	formate				100	250
S	Methyl	iodide				5	28
	Methyl	isoanyl ketone				100	475
S	Methyl	isobutyl carbinol				25	100
	Methyl	isobutyl ketone, see Hexone
S	Methyl	isocyanate				0.02	0.05
	Methyl	mercaptan				0.5	1
	Methyl	methacrylate				100	410
	Methyl	propyl ketone,	see	2-Pentanone
C	Methyl	silicate				5 30

C alpha-Methyl styrene 100 480

C	Methylene bisphenyl isocyanate (MDI)	0.02	0.2
	Methylene chloride (dichloromethane)	~~500~~	~~1,740~~
	(SEE R 325.51651 ET SEQ.*)
	Molybdenum (soluble compounds)	---	5
	(insoluble compounds)	---	15

S Monomethyl aniline 2 9

S,C Mouomethyl hydrazine 0.2 0.35

S Morpholine 20 70

A See R 325.60154(2). C See R 325.60154(2). S See R 325.60154(2).

* CAUTION--THESE RULES CONTAIN EXTENSIVE REQUIREMENTS FOR EXPOSURE TO THESE SUBSTANCES.

~~R 325.2417~~ R 325.60159 Maximum allowable concentrations for substances; N to P. Rule 17 9. Table 5. Substances N to P

MAC

Substance ppm mg/m3

Naphtha (coal tar) 100 400

Naphtha (petroleum)(MAC will be based on aromatic hydrocarbons in mixture)

Naphthalene 10 50

A beta-Naphthylamine ---

Neon Inert gas

Nickel carbonyl 0.001 0.007

Nickel, metal and soluble compounds (as Ni) --- 1

S Nicotine --- 0.5

Nitric acid 2 5

Nitric oxide 25 30

S p-Nitroaniline 1 6

S Nitrobenzene 1 5

S p-Nitrochlorobenzene --- 1

Nitroethane 100 310

Nitrogen Inert gas

Nitrogen dioxide 5 9

Nitrogen trifluoride 10 29

S Nitroglycerin 0.2 2

Nitromethane 100 250

1-Nitropropane 25 90

2-Nitropropane 25 90

S,A N-Nitrosodimethylamine (dimethylnitrosomine) ---

S Nitrotoluene 5 30

Nitrotrichloromethane, see Chloropicrin

Nitrous oxide Inert gas

S Octachloronaphthalene --- 0.1

Octane 400 1,900

Oil mist, particulate --- 5

Oil mist, vapor (MAC will be based on aromatic hydrocarbons in mixture)

Osmium		tetroxide	---	0.002
Oxalic		acid	---	1
Oxygen		difluoride	0.05	0.1
Ozone			0.1	0.2
S	Paraquat		---	0.5

S Parathion --- 0.1

Pentaborane 0.005 0.01

S Pentachloronaphthalene --- 0.5

S Pentachlorophenol --- 0.5

Pentaerythritol Inert particulate

Pentane 500 1,500

2-Pentanone 200 700

Perchloroethylene 100 670

Perchloromethyl mercaptan 0.1 0.8

Perchloryl fluoride 3 13.5

Petroleum distillates (naphtha)(MAC will be based on aromatic

hydrocarbons in mixture)
S	Phenol				5	19
S	p-Phenylene diamine				---	0.1
	Phenyl ether (vapor)				1	7
	Phenyl ether-biphenyl		mixture	(vapor)	1	7
Phenylethylene, see Styrene
	Phenyl glycidyl	ether	(PGE)		10	60
S	Phenylhydrazine				5	22

S Phosdrin (Mevinphos®) --- 0.1

Phosgene (carbonyl chloride) 0.1 0.4

Phosphine 0.3 0.4

Phosphoric acid --- 1

Phosphorus (yellow) --- 0.1

Phosphorus pentachloride --- 1

Phosphorus pentasulfide --- 1

Phosphorus trichloride 0.5 3

Phthalic anhydride 2 12

S Picric acid --- 0.1

Pival® (2-pivalyl-1,3-indandione) --- 0.1

Plaster of Paris Inert dust

Platinim, soluble salts (as Pt) --- 0.002

Polytetrafluoroethylene decomposition products, see Teflon® decomposition products

Propane Inert gas

S Propargyl alcohol 1 ---

A beta-Propiolactone ---

n-Propyl acetate 200 840

Propyl alcohol 200 500

n-Propyl nitrate 25 110

Propylene bichloride 75 350

S Propylene imine 2 5

Propylene oxide 100 240

Propyne, see Methyl acetylene

Pyrethrum --- 5

Pyridine 5 15

A See R 325.60154(2). C See R 325.60154(2). S See R 325.60154(2).

~~R 325.2418~~ R 325.60160 Maximum allowable concentrations for substances; Q to Z. Rule 18 10. Table 6. Substances Q to Z

MAC

Substance ppm mg/m3

	Quinone			0.1			0.4
S	RDX			---			1.5
	Rhodium, metal fume, ~~and~~ dusts			AND INSOLUBLE COMPOUNDS
	(as Rh)			---			0.1
RHODIUM, SOLUBLE COMPOUNDS Soluble salts		(as	Rh)	---	0.001 ---	0.001
Ronnel						---	10
Rotenone (commercial)						---	5
Rouge						Inert	dust
Selenium compounds (as		Se)				---	0.2
Selenium hexafluoride						0.05	0.4
Silicon carbide						Inert	dust
	Silver, metal and soluble compounds					---	0.01
S	Sodium fluoroacetate (1080)					---	0.05
	Sodium hydroxide					---	2
	Starch					Inert	dust
	Stibine					0.1	0.5
	Stoddard solvent					200	1,150
	Strychnine					---	0.15
C	Styrene monomer (phenylethylene)					100	420
	Sucrose					Inert	dust
	Sulfur dioxide					5	13
	Sulfur hexafluoride					1,000	6,000
	Sulfuric acid					---	1
	Sulfur monochloride					1	6
	Sulfur pentafluoride					0.025	0.25
	Sulfuryl fluoride					5	20
	Systox, see Demeton®
	2,4,5T					---	10
	Tantalum					---	5
S	TEDP					---	0.2

Teflon® decomposition products (maintain minimal air concentration)

	Tellurium	---	0.1
	Tellurium hexafluoride	0.02	0.2
S	TEPP	---	0.05
C	Terphenyls	1	9
	1,1,1,2-Tetrachloro-2,2-difluoroethane	500	4,170
	1,1,2,2-Tetrachloro-1,2-difluoroethane	500	4,170
S	1,1,2,2-Tetrachloroethane	5	35
	Tetrachloroethylene, see Perchloroethylene
	Tetrachloromethane, see Carbon tetrachloride
S S	Tetrachloronaphthalene Tetraethyl lead (as Pb)	--- ---	2 0.075a
	Tetrahydrofuran	200	590
S	Tetramethyl lead (THL) (as Pb)	---	0.150
S	Tetramethyl succinonitrile	0.5	3
	Tetranitromethane	1	8
S	Tetryl (2,4,6-trinitrophenylmethylnitramine)	---	1.5
S	Thallium, soluble compounds (as T1)	---	0.1
	Thiram	---	5
	Tin (inorganic compounds, except SnH4 and SnO2)	---	2
	(organic compounds)	---	0.1
	Tin oxide	Inert	particulate
	Titanium dioxide	Inert	particulate

	Toluene (toluol)			200	750
C	Toluene-2,4-diisocyanate			0.02	0.14
S	o-Toluidine			5	22
	Toxaphene, see Chlorinated	camphene
	Tributyl phosphate			---	5
	1,1,1-Trichloroethane, see	Methyl chloroform
S	1,1,2-Trichloroethane			10	45
	Trichloroethylene			100	535
	Trichloromethane, see Chloroform
S	Trichloronaphthalene			---	5
	1,2,3-Trichloropropane			50	300
	1,1,2-Trichloro-1,2,2-trifluoroethane			1,000	7,600
	Triethylamine			25	100
	Trifluoromonobromomethane			1,000	6,100
	Trimethyl benzene			25	120
	2,4,6-Trinitrophenol, see Picric acid
	2,4,6-Trinitrophenylmethylnitramine, see		Tetryl
S	Trinitrotoluene			---	1.5
	Triorthocresyl phosphate			---	0.1
	Triphenyl phosphate			---	3
	Tungsten and compounds (as W)
	Insoluble			---	5
	Soluble			---	1
	Turpentine			100	560
	Uranium (natural)
	soluble & insoluble compounds (as U)			---	0.2
C	Vanadium (V2O5 dust)			---	0.5
	(V2O5 fume) Vinyl benzene, see Styrene			---	0.1
C	Vinyl chloride			500	1,300
	Vinyl cyanide, see Acrylonitrile
	Vinyl toluene			100	480
	Warfarin			---	0.1
	Xylene (xylol)			100	435
S	Xylidine			5	25
	Yttrium			---	1
	Zinc chloride fume			---	1
	Zinc oxide fume			---	5
	Zirconium compounds (as Zr)			---	5

A See R 325.60154(2). C See R 325.60154(2). S See R 325.60154(2).

aThe 1970 ACGI H stan dar d for Tetra eth yl lead is 0.100 mg/m 3.

* CAUTIO N—THE SE RULES CONTAIN EXTEN SIVE REQUI REMEN TS FOR EXPOSURE TO THE SE SUBST ANCES.

~~R 325 .2419~~ R 325 .60161 Maximum a llowable con centrat ions for minera l dusts. Rule 19 11. Table 7. Minera l dusts

Substan ce	MAC (mpp cf)
Silica Crysta lline * Quart z Cristobalite Amorphous, including natura l diat oma ceous earth	MAC = 250 % SiO2+5 MAC sam e as quart z 20
Silicat es (less than 1% crysta lline silica)	5
Asbes tos, all types (SEE ASBESTOS IN
CONSTRUCTIO N R 325 .51301 ET SEQ.)
Mica
	20
Port lan d cement
	50
Soapstone
	20
Talc (non-asbes t iform )
	20
Talc (fibrous) (SEE ASBESTOS IN
CONSTRUCTIO N R 325 .51301 ET SEQ.)	~~MAC is s am e a s for a sbes t os~~
Tremolite (SEE ASBESTOS IN
CONSTRUCTIO N R 325 .51301 ET SEQ.)	~~MAC is s am e a s for a sbes t os~~
Gra phite (natura l)	15
Inert or nu isan ce part icles **	50 of tota l dust less than 1% SiO (or 15 mg/m 3, whichever 2 is th e sma ller)

* The percenta ge of crysta lline silica, SiO2, in th e formu la is th e am ount determ ined from airborn e sam ples.

** The following ar e some exam ples of inert or nu isan ce part iculat es when toxic impur ities ar e not prese nt ; e.g. quart z less than 1%.

Alun dum (A1203)	Gyps um	Rouge
Calcium car bonat e	Limestone	Silicon car bide
Cellulose	Magnesite	Star ch
Corun dum (A1203)	Mar ble	Sucrose
Em ery	Penta erythr itol	Tin oxide
Glycerine mist	Plaster of Par is	Titan ium dioxide
Gra phite (synth etic)	Port lan d cement	Vegeta ble oil mists (except castor, cashew nut , or similar irr itant oils)

Document Information

Rules:: R325.50091
R325.50101
R325.51151
R325.51451
R325.51501
R325.51601
R325.51651
R325.51851
R325.60154
R325.60156
R325.60157
R325.60158
R325.60159
R325.60160
R325.77101