Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › Occupational Health Standards › Part 601 - AIR CONTAMINANTS FOR CONSTRUCTION › Section R. 325.60156 - Maximum allowable concentrations for substances; C and D

Current through Vol. 24-12, July 15, 2024
Rule 6. Table 2 for substances C and D, are as
						follows:
TABLE 2
MAXIMUM ALLOWABLE CONCENTRATIONS FOR
									 SUBSTANCES; C AND D
SUBSTANCE
CAS No.1
MAC/Ceiling/STEL
ppm
mg/m3
Cadmium and cadmium compounds
See CS 609. Cadmium in
									 Construction*
Calcium arsenate
---
1
Calcium carbonate
1317-65-3
Inert dust
Calcium oxide
1305-78-8
---
5
Camphor (synthetic)
76-22-2
2
---
Carbaryl (Sevin)
63-25-2
---
5
Carbon black
1333-86-4
---
3.5
Carbon dioxide
124-38-9
5,000
9,000
S
Carbon disulfide
75-15-0
20
60
Carbon monoxide
630-08-0
50
55
S, C
Carbon tetrachloride
56-23-5
10
65
Cellulose (paper fiber)
9004-34-6
Inert dust
S
Chlordane
57-74-9
---
0.5
S
Chlorinated camphene
8001-35-2
---
0.5
Chlorinated diphenyl oxide
55720-99-5 or 31242-93-0
---
0.5
Chlorine
7782-50-5
1
3
Chlorine dioxide
10049-04-4
0.1
0.3
C
Chlorine trifluoride
7790-91-2
0.1
0.4
C
Chloroacetaldehyde
107-20-0
1
3
alpha-Chloroacetophenone (Phenacyl chloride)
532-27-4
0.05
0.3
Chlorobenzene (mono chlorobenzene)
108-90-7
75
350
o-Chlorobenzylidene malononitrile (OCBM)
2698-41-1
0.05
0.4
Chlorobromomethane
74-97-5
200
1,050
2-Chloro-1,3-butadiene
See Chloroprene
Chlorodiphenyl (42% Chlorine)
53469-21-9
---
1
Chlorodiphenyl (54% Chlorine)
11097-69-1
---
0.5
1-Chloro-2,3-epoxy propane
See Epichlorohydrin
2-Chloroethanol
See Ethylene chlorohydrin
Chloroethylene
See Vinyl chloride
C
Chloroform (Trichloromethane)
67-66-3
50
240
1-Chloro-1-nitropropane
600-25-9
20
100
Chloropicrin
76-06-2
0.1
0.7
Chloroprene (2-chloro-1,3-butadiene)
126-99-8
25
90
Chromic acid and chromates (as Cr03)
See OH 604. Chromium (VI) in Construction*,
									 ***
Chromium (VI) compounds
See OH 604. Chromium (VI) in Construction*,
									 ***
Chromium
sol. chromic and chromous salts (as Cr)
Varies with compound
---
0.5
Metal and insol. Salts
7440-47-3
---
1
Coal tar pitch volatiles (benzene soluble
									 fraction: anthracene, BaP, phenanthrene, acridine, chrysene, pyrene)
65996-93-2
---
0.2
Cobalt, metal fume and dust
7440-48-4
0.1
Coke oven emissions
See GI & CS 314. Coke Oven Emissions*
Copper
Fume
7440-50-8
---
0.1
Dusts and mists
---
1
Corundum (Al203)
Inert dust
Cotton dust (raw)
-
---
1
Crag herbicide
136-78-7
---
15
S
Cresol (all isomers)
1319-77-3
5
22
Crotonaldehyde
123-73-9 4170-30-3
2
6
S
Cumene
98-82-8
50
245
S
Cyanide (as CN)
Varies with compound
---
5
Cyanogen
460-19-5
10
---
Cyclohexane
110-82-7
300
1,050
Cyclohexanol
108-93-0
50
200
Cyclohexanone
108-94-1
50
200
Cyclohexene
110-83-8
300
1,015
Cyclopentadiene
542-92-7
75
200
2,4-D
94-75-7
---
10
S
DDT (Dichlorodiphenyl-trichloroethane)
50-29-3
---
1
DDVP
See Dichlorvos
S
Decaborane
17702-41-9
0.05
0.3
S
Demeton
8065-48-3
---
0.1
Diacetone alcohol
									 (4-hydroxy-4-methyl-2-pentanone)
123-42-2
50
240
1,2-Diainoethane
See Ethylenediamine
Diazomethane
334-88-3
0.2
0.4
Diborane
19287-45-7
0.1
0.1
S, C
1,2-Dibromoethane (ethylene dibromide)
106-93-4
25
190
Dibutyl phosphate
107-66-4
1
5
Dibutyl phthalate
84-74-2
---
5
C
Dichloroacetylene
7572-29-4
0.1
0.4
C
o-Dichlorobenzene
95-50-1
50
300
p-Dichlorobenzene
106-46-7
75
450
Dichlorodifluoromethane
75-71-8
1,000
4,950
1,3-Dichloro-5, 5-dimethyl hydantoin
118-52-5
---
0.2
1,1-Dichloroethane
75-34-3
100
400
1,2-Dichloroethane
107-06-2
50
200
1,2-Dichloroethylene
540-59-0
200
790
S, C
Dichloroethyl ether
111-44-4
15
90
Dichloromethane
See Methylene chloride
Dichloromonofluoromethane
75-69-4
1,000
4,200
C
1,1-Dichloro-1-nitroethane
594-72-9
10
60
1,2-Dichloropropane
See Propylene dichloride
Dichlorotetrafluoroethane
76-14-2
1,000
7,000
S
Dichlorvos (DDVP)
62-73-7
---
1
S
Dieldrin
60-57-1
---
0.25
Diethylamine
109-89-7
25
75
S
Diethylamino, ethanol
100-37-8
10
50
S, C
Diethylene triamine
111-40-0
10
42
Diethyl ether
See Ethyl ether
Difluorodibromomethane
75-61-6
100
860
C
Diglycidyl ether (DGE)
2238-07-5
0.5
2.8
Dihydroxybenzene
See Hydroquinone
Diisobutyl ketone
108-83-8
50
290
S
Diisopropylamine
108-18-9
5
20
Dimethoxymethane
See Methylal
S
Dimethyl acetamide
127-19-5
10
35
Dimethylamine
124-40-3
10
18
Dimethylaminobenzene
See Xylidene
S
Dimethylaniline (N-dimethylaniline)
121-69-7
5
25
Dimethylbenzene
See Xylene
Dimethyl-1, 2-dibromo- 2, 2-dichloroethyl
									 phosphate (Dibrom)
300-76-5
---
3
S
Dimethylformamide
68-12-2
10
30
2,6-Dimethylheptanone
See Diisobutyl ketone
S
1,1-Dimethylhydrazine
57-14-7
0.5
1
Dimethylphthalate
131-11-3
---
5
S
Dimethyl sulfate
77-78-1
1
5
S
Dinitrobenzene (all isomers)
99-65-0
528-29-0
100-25-4
---
1
S
Dinitro-o-cresol
534-52-1
---
0.2
S
Dinitrotoluene
25321-14-6
---
1.5
S
Dioxane (diethylene dioxide)
123-91-1
100
360
Diphenyl
92-52-4
0.2
1
Diphenylamine
122-39-4
---
10
Diphenylmethane diisocyanate
See Methylene bisphenyl isocyanate (MDI)
S
Dipropylene glycol methyl ether
34590-94-8
100
600
Di-sec-octyl phthalate
									 (di-2-ethylhexylphthalate)
117-81-7
---
5
1
The CAS number is for information
								  only. Enforcement is based on the substance name. For an entry covering more
								  than 1 metal compound measured as the metal, the CAS number for the metal is
								  given - not the CAS number for the individual compounds.
A
See
								  R
								  325.60154(2)(a).
C
See
								  R
								  325.60154(2)(b).
S
See
								  R
								  325.60154(2)(c).
STEL
See
								  R
								  325.60154(2)(d).
*
Caution--these rules contain extensive
								  requirements for exposure to these substances.
***
If the exposure limit in OH 604.
								  Chromium (VI) in Construction is stayed or is otherwise not in effect, the
								  exposure limit is 0.1 mg/m3 for chromic acid and
								  chromates (Cr03) as an 8-hour TWA.
All MIOSHA Standards shown in this table are
									 referenced in
									 R
									 325.60151.