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. 325.60160 - Maximum allowable concentrations for substances; Q to Z

Current through Vol. 24-12, July 15, 2024
Rule 10. Table 6 for substances Q to Z, are as
						follows:
TABLE 6
MAXIMUM ALLOWABLE CONCENTRATIONS FOR
									 SUBSTANCES; Q TO Z
SUBSTANCE
CAS No.1
MAC/Ceiling/STEL
ppm
mg/m3
Quinone
106-51-4
0.1
0.4
S
RDX
121-82-4
---
1.5
Rhodium
metal fume, dusts, and insoluble compounds (as
									 Rh)
7440-16-6
---
0.1
soluble compounds (as Rh)
---
0.001
Ronnel
299-84-3
---
10
Rotenone (commercial)
83-79-4
---
5
Rouge
Inert dust
Selenium compounds (as Se)
7782-49-2
---
0.2
Selenium hexafluoride
7783-79-1
0.05
0.4
Silica, crystalline, respirable dust**
See OH 690 Silica in Construction
Cristobalite
14464-46-1
Quartz
14808-60-7
Tripoli ( as quartz)
1317-95-9
Trydimite
15468-32-3
Silicon carbide
409-21-2
Inert dust
Silver, metal and soluble compounds
7440-22-4
---
0.01
S
Sodium fluoroacetate (1080)
62-74-8
---
0.05
Sodium hydroxide
1310-73-2
---
2
Starch
9005-25-8
Inert dust
Stibine
7803-52-3
0.1
0.5
Stoddard solvent
8052-41-3
200
1,150
Strychnine
57-24-9
---
0.15
C
Styrene monomer (phenylethylene)
100-42-5
100
420
Sucrose
57-50-1
Inert dust
Sulfur dioxide
7446-09-5
5
13
Sulfur hexafluoride
2551-62-4
1,000
6,000
Sulfuric acid
7664-93-9
---
1
Sulfur monochloride
10025-67-9
1
6
Sulfur pentafluoride
5714-22-7
0.025
0.25
Sulfuryl fluoride
2699-79-8
5
20
Systox
See Demeton®
2,4,5T
93-76-5
---
10
Tantalum
7440-25-7
---
5
S
TEDP
3689-24-5
---
0.2
Teflon decomposition products (maintain minimal
									 air concentration)
Tellurium
13494-80-9
---
0.1
Tellurium hexafluoride
7783-80-4
0.02
0.2
S
TEPP
107-49-3
---
0.05
C
Terphenyls
26140-60-3
1
9
1,1,1,2-Tetrachloro-2,2-difluoroethane
76-11-9
500
4,170
1,1,2,2-Tetrachloro-1,2-difluoroethane
76-12-0
500
4,170
S
1,1,2,2-Tetrachloroethane
79-34-5
5
35
Tetrachloroethylene
See Perchloroethylene
Tetrachloromethane
See Carbon tetrachloride
S
Tetrachloronaphthalene
1335-88-2
---
2
S
Tetraethyl lead (as Pb)
78-00-2
---
0.075a
Tetrahydrofuran
109-99-9
200
590
S
Tetramethyl lead (TML)(as Pb)
75-74-1
---
0.150
S
Tetramethyl succinonitrile
3333-52-6
0.5
3
Tetranitromethane
509-14-8
1
8
S
Tetryl
									 (2,4,6-trinitrophenylmethyl-nitramine)
479-45-8
---
1.5
S
Thallium, soluble compounds (as Tl)
7440-28-0
---
0.1
Thiram
137-26-8
---
5
Tin
Inorganic compounds, except
									 SnH4 and SnO2
7440-31-5
---
2
Organic compounds
7440-31-5
---
0.1
Oxide
21651-19-4
Inert particulate
Titanium dioxide
13463-67-7
Inert particulate
Toluene (toluol)
108-88-3
200
750
C
Toluene-2,4-diisocyanate
584-84-9
0.02
0.14
S
o-Toluidine
95-53-4
5
22
Toxaphene
See Chlorinated camphene
Tributyl phosphate
126-73-8
---
5
1,1,1-Trichloroethane
See Methyl chloroform
S
1,1,2-Trichloroethane
79-00-5
10
45
Trichloroethylene
79-01-6
100
535
Trichloromethane
See Chloroform
S
Trichloronaphthalene
1321-65-9
---
5
1,2,3-Trichloropropane
96-18-4
50
300
1,1,2-Trichloro-1,2,2-trifluoroethane
76-13-1
1,000
7,600
Triethylamine
121-44-8
25
100
Trifluoromonobromomethane
75-63-8
1,000
6,100
Trimethyl benzene
25551-13-7
25
120
2,4,6-Trinitrophenol
See Picric acid
2,4,6-Trinitrophenylmethylnitramine
See Tetryl
S
Trinitrotoluene
118-96-7
---
1.5
Triorthocresyl phosphate
78-30-8
---
0.1
Triphenyl phosphate
115-86-6
---
3
Tungsten and compounds (as W)
Insoluble
7440-33-7
---
5
Soluble
---
1
Turpentine
8006-64-2
100
560
Uranium (natural) soluble and insoluble
									 compounds (as U)
7440-61-1
---
0.2
C
Vanadium
(V2O5
									 dust)
1314-62-1
---
0.5
(V2O5
									 fume)
---
0.1
Vinyl benzene
See Styrene
C
Vinyl chloride
See GI 302. Vinyl Chloride*
Vinyl cyanide
See Acrylonitrile
Vinyl toluene
25013-15-4
100
480
Warfarin
81-81-2
---
0.1
Xylene (xylol)
1330-20-7
100
435
S
Xylidine
1300-73-8
5
25
Yttrium
7440-65-5
---
1
Zinc chloride fume
7646-85-7
---
1
Zinc oxide fume
1314-13-2
---
5
Zirconium compounds (as Zr)
7440-67-7
---
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)
a
The 1970 ACGIH standard for Tetraethyl lead is
									 0.100 mg/m3.
*
Caution--these rules contain extensive
									 requirements for exposure to these substances.
**
See Table 7 for the exposure limit for any
									 operations or sectors where the exposure limit in OH 690. "Silica in
									 Construction" is stayed or is otherwise not in effect.
All MIOSHA Standards shown in this table are
									 referenced in
									 R
									 325.60151.