Mich. Admin. Code R. 325.60160 - Maximum allowable concentrations for substances; Q to Z

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.

Notes

Mich. Admin. Code R. 325.60160

2002 AACS; 2013 AACS; 2017 AACS; 2019 MR 18, Eff. 9/20/2019