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. 325.60155 - Maximum allowable concentrations for substances; A and B

Current through Vol. 24-12, July 15, 2024
Rule 5. Table 1 for substances A and B, are as
						follows:
TABLE 1
MAXIMUM ALLOWABLE CONCENTRATIONS FOR
									 SUBSTANCES; A AND B
SUBSTANCE
CAS No.1
MAC/Ceiling/STEL
ppm
mg/m3
Abate
3383-96-8
---
15
Acetaldehyde
75-07-0
200
360
Acetic acid
64-19-7
10
25
Acetic anhydride
108-24-7
5
20
Acetone
67-64-1
1,000
2,400
Acetonitrile
75-05-8
40
70
Acetylene
Inert gas
Acetylene dichloride
See 1,2-Dichloroethylene
Acetylene tetrabromide
79-27-6
1
14
Acrolein
107-02-8
0.1
0.25
S
Acrylamide
79-06-1
---
0.3
S
Acrylonitrile
See GI & CS 307. Acrylonitrile*
S
Aldrin
309-00-2
---
0.25
S
Allyl alcohol
107-18-6
2
5
Allyl chloride
107-05-1
1
3
C
Allyl glycidyl ether (AGE)
106-92-3
10
45
Allyl propyl disulfide
2179-59-1
2
12
Alundum
									 (Al203)
Inert dust
2-Aminoethanol
See Ethanolamine
2-Aminopyridine
504-29-0
0.5
2
Ammonia
7664-41-7
50
35
Ammonium sulfamate (amate)
7773-06-0
---
15
n-Amyl acetate
628-63-7
100
525
sec-Amyl acetate
626-38-0
125
650
S
Aniline
62-53-3
5
19
S
Anisidine (o- and p-isomers)
29191-52-4
---
0.5
Antimony and compounds (as Sb)
7440-36-0
---
0.5
ANTU (alpha naphthylthiourea)
86-88-4
---
0.3
Argon
Inert gas
Arsenic, inorganic compounds
See GI & CS 308. Inorganic
									 Arsenic*
Arsenic, organic compounds (as As)
7440-38-2
---
0.5
Arsine
7784-42-1
0.05
0.2
S
Azinphos-methyl
86-50-0
---
0.2
Barium (soluble compounds)
7440-39-3
---
0.5
Benzene (benzol)
See GI & CS 311. Benzene*
A, S
Benzidine
92-87-5
---
---
p-Benzoquinone
See Quinone
Benzoyl peroxide
94-36-0
---
5
Benzyl chloride
100-44-7
1
5
MAC/Ceiling/STEL
ppm
STEL
MAC
mg/m3
mg/m3
Beryllium and beryllium compounds (as
									 Be)
7440-41-7
---
0.0002 (0.2 [MICRO]g/m3)
STEL
Beryllium and beryllium compounds (as
									 Be)
7440-41-7
0.002 (2.0 [MICRO]g/m3)
Biphenyl
See Diphenyl
Bisphenol A
See Diglycidyl ether
SUBSTANCE
CAS
								  No.1
MAC/Ceiling/STEL
ppm
mg/m3
Boron oxide
1303-86-2
---
15
Boron tribromide
10294-33-4
1
10
C
Boron trifluoride
7637-07-2
1
3
Bromine
7726-95-6
0.1
0.7
Bromine pentafluoride
7789-30-2
0.1
0.7
S
Bromoform
75-25-2
0.5
5
Butadiene (1,3-butadiene)
See OH 312. 1,3-Butadiene*
Butanethiol
See Butyl mercaptan
2-Butanone
78-93-3
200
590
S
2-Butoxy ethanol (butyl
									 cellosolve)
111-76-2
50
240
Butyl acetate (n-butyl acetate)
123-86-4
150
710
sec-Butyl acetate
105-46-4
200
950
tert-Butyl acetate
540-88-5
200
950
Butyl alcohol
71-36-3
100
300
sec-Butyl alcohol
78-92-2
150
450
tert-Butyl alcohol
75-65-0
100
300
S, C
Butylamine
109-73-9
5
15
tert-Butyl chromate (as Cr+6)
See OH 604. Chromium (VI) in Construction*, **
n-Butyl glycidyl ether (BGE)
2426-08-6
50
270
Butyl mercaptan
109-79-5
0.5
1.5
p-tert-Butyltoluene
98-51-1
10
60
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
									 a ceiling of 0.1 mg/m3 and has an "S"
									 notation.
All MIOSHA Standards shown in this table are
									 referenced in
									 R
									 325.60151.