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 2 of 51 - 1275 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 |
| 109604 |
n-propyl acetate |
|
FINAL |
8350 |
8 hr |
|
|
|
|
|
| 109999 |
tetrahydrofuran |
|
FINAL |
8000 |
annual |
|
|
|
|
|
| 5989275 |
d-limonene |
|
FINAL |
6250 |
annual |
|
|
|
|
|
| 74851 |
ethylene |
|
FINAL |
6240 |
annual |
|
|
|
|
|
| 79209 |
methyl acetate |
|
FINAL |
6100 |
8 hr |
|
|
|
|
|
| 71556 |
methyl chloroform |
|
FINAL |
6000 |
24 hr |
|
|
|
|
|
| 110827 |
cyclohexane |
|
FINAL |
6000 |
24 hr |
|
|
|
|
|
| 67641 |
acetone |
|
FINAL |
5900 |
8 hr |
|
|
|
|
|
| 872504 |
N-methylpyrrolidone |
|
FINAL |
5600 |
24 hr |
|
|
|
|
|
| 64741555 |
naphtha (petroleum), light catalytic cracked |
25 |
FINAL |
5600 |
annual |
|
|
|
|
|
| 64741839 |
naphtha, heavy thermal cracked |
25 |
FINAL |
5600 |
annual |
|
|
|
|
|
| 108656 |
propylene glycol monomethyl ether acetate |
|
FINAL |
5400 |
1 hr |
|
|
|
|
|
| 107879 |
methyl propyl ketone |
|
FINAL |
5300 |
8 hr |
|
|
|
|
|
| 108883 |
toluene |
|
FINAL |
5000 |
24 hr |
|
|
|
|
|
| 78933 |
methyl ethyl ketone |
|
FINAL |
5000 |
24 hr |
|
|
|
|
|
| 105588 |
diethyl carbonate |
|
FINAL |
5000 |
24 hr |
|
|
|
|
|
| 2837890 |
2-chloro-1,1,1,2-tetrafluoroethane |
|
FINAL |
5000 |
annual |
|
|
|
|
|
| 107211 |
ethylene glycol |
|
FINAL |
4700 |
1 hr |
|
|
|
|
|
| 108214 |
isopropyl acetate |
|
FINAL |
4200 |
8 hr |
|
|
|
|
|
| 8030306 |
naphtha |
1 |
FINAL |
4000 |
8 hr |
|
|
|
|
|
| 107982 |
propylene glycol monomethyl ether |
|
FINAL |
3700 |
1 hr |
|
|
|
|
|
| 108087 |
2,4-dimethylpentane |
|
FINAL |
3500 |
8 hr |
|
|
|
|
|
| 540841 |
2,2,4-Trimethyl Pentane |
1 |
FINAL |
3500 |
8 hr |
|
|
|
|
|
| 565593 |
2,3-dimethylpentane |
|
FINAL |
3500 |
8 hr |
|
|
|
|
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| 589344 |
3-methylhexane |
|
FINAL |
3500 |
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 lehnerD@michigan.gov or (517) 582-3779. |
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