Michigan Air Toxics System
Initial Threshold Screening Level/Initial Risk Screening Level (ITSL/IRSL)
Toxics Screening Level Query Results
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The results of your search are displayed below. Click any column heading to sort.
Click here to see descriptions of column headings.
If a number appears in the "notes" column for a given, chemical, see the definition on the bottom of this page.
It is possible to cut and paste the table below into a spreadsheet program for further manipulation. |
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Page 1 of 52 - 1277 record(s) matched your criteria |
| CAS Number |
Chemical Name |
Notes |
Status |
ITSL (μg/m3) |
Averaging Time |
Second ITSL (μg/m3) |
Second ITSL Avg Time |
IRSL
(μg/m3) |
SRSL
(μg/m3) |
Carc Avg Time |
| 75376 |
1,1-difluoroethane |
|
FINAL |
400000 |
annual |
|
|
|
|
|
| 431890 |
hfc-227ea |
13 |
FINAL |
130000 |
annual |
5560000 |
1 hr |
|
|
|
| 115117 |
isobutylene |
|
FINAL |
110000 |
annual |
|
|
|
|
|
| 811972 |
1,1,1,2-tetrafluoroethane |
|
FINAL |
80000 |
annual |
|
|
|
|
|
| 76142 |
dichlorotetrafluoroethane |
|
FINAL |
69000 |
8 hr |
|
|
|
|
|
| 75683 |
1-chloro-1,1-difluoroethane |
|
FINAL |
50000 |
annual |
|
|
|
|
|
| 75456 |
chlorodifluoromethane |
|
FINAL |
50000 |
annual |
|
|
|
|
|
| 75285 |
isobutane |
22 |
FINAL |
23800 |
8 hr |
|
|
|
|
|
| 106978 |
butane |
22 |
FINAL |
23800 |
8 hr |
|
|
|
|
|
| 67561 |
methanol |
|
FINAL |
20000 |
24 hr |
28000 |
1 hr |
|
|
|
| 76131 |
1,1,2-trichloro-1,2,2-trifluoroethane |
|
FINAL |
19140 |
24 hr |
|
|
|
|
|
| 64175 |
ethyl alcohol |
|
FINAL |
19000 |
1 hr |
|
|
|
|
|
| 78784 |
2-methyl butane |
|
FINAL |
17700 |
8 hr |
|
|
|
|
|
| 109660 |
pentane |
|
FINAL |
17700 |
8 hr |
|
|
|
|
|
| 107835 |
2-methylpentane |
|
FINAL |
17600 |
8 hr |
|
|
|
|
|
| 287923 |
cyclopentane |
|
FINAL |
17200 |
8 hr |
|
|
|
|
|
| 74997 |
methyl acetylene |
|
FINAL |
16500 |
8 hr |
|
|
|
|
|
| 108872 |
methylcyclohexane |
|
FINAL |
16000 |
8 hr |
|
|
|
|
|
| 1717006 |
1,1-dichloro-1-fluoroethane |
|
FINAL |
12800 |
annual |
|
|
|
|
|
| 60297 |
ethyl ether |
|
FINAL |
12000 |
8 hr |
|
|
|
|
|
| 74975 |
chlorobromomethane |
|
FINAL |
10600 |
8 hr |
|
|
|
|
|
| 75003 |
ethyl chloride |
|
FINAL |
10000 |
24 hr |
|
|
|
|
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| 110838 |
cyclohexene |
|
FINAL |
10000 |
8 hr |
|
|
|
|
|
| 110838 |
cyclohexene |
|
FINAL |
10000 |
8 hr |
|
|
|
|
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| 115071 |
propylene |
|
FINAL |
8600 |
8 hr |
|
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Notes: For a list of notes which correspond to any numbers which may appear in the �Notes� column above, please follow this link.
https://www.michigan.gov/egle/-/media/Project/Websites/egle/Documents/Programs/AQD/toxics/itsl-irsl-screening-level-footnotes.pdf
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| For issues related to ITSL/IRSL database content, contact Doreen Lehner at [email protected] or (517) 582-3779. |
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