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 19 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 |
| 624839 |
methyl isocyanate |
|
FINAL |
1 |
annual |
|
|
|
|
|
| 108101 |
methyl isobutyl ketone |
|
FINAL |
820 |
8 hr |
|
|
|
|
|
| 110123 |
methyl isoamy ketone |
|
FINAL |
2300 |
8 hr |
|
|
|
|
|
| 74884 |
methyl iodide |
|
FINAL |
120 |
8 hr |
|
|
|
|
|
| 60344 |
methyl hydrazine |
|
FINAL |
0.03 |
annual |
|
|
0.0087 |
0.087 |
annual |
| 107313 |
methyl formate |
|
FINAL |
1250 |
8 hr |
|
|
|
|
|
| 1338234 |
methyl ethyl ketone peroxide |
|
FINAL |
15 |
1 hr |
|
|
|
|
|
| 78933 |
methyl ethyl ketone |
|
FINAL |
5000 |
24 hr |
|
|
|
|
|
| 17639939 |
methyl chloroproprionate |
|
FINAL |
6 |
annual |
|
|
|
|
|
| 71556 |
methyl chloroform |
|
FINAL |
6000 |
24 hr |
|
|
|
|
|
| 74873 |
methyl chloride |
21 |
FINAL |
90 |
annual |
|
|
|
|
|
| 115195 |
methyl butynol |
|
FINAL |
6.5 |
annual |
|
|
|
|
|
| 74839 |
methyl bromide |
|
FINAL |
5 |
annual |
|
|
|
|
|
| 93583 |
methyl benzoate |
|
FINAL |
4 |
annual |
|
|
|
|
|
| 108112 |
methyl amyl alcohol |
|
FINAL |
1000 |
8 hr |
|
|
|
|
|
| 96333 |
methyl acrylate |
|
FINAL |
70 |
annual |
|
|
|
|
|
| 74997 |
methyl acetylene |
|
FINAL |
16500 |
8 hr |
|
|
|
|
|
| 79209 |
methyl acetate |
|
FINAL |
6100 |
8 hr |
|
|
|
|
|
| 67561 |
methanol |
|
FINAL |
20000 |
24 hr |
28000 |
1 hr |
|
|
|
| 3144090 |
methanesulfonamide |
|
FINAL |
44 |
annual |
|
|
|
|
|
| 75752 |
methane sulfonic acid |
|
FINAL |
1.4 |
annual |
|
|
|
|
|
| 79414 |
methacrylic acid |
|
FINAL |
30 |
annual |
|
|
|
|
|
| 141797 |
mesityl oxide |
|
FINAL |
400 |
8 hr |
|
|
|
|
|
| 7439976 |
mercury and mercury compounds |
7 |
FINAL |
0.3 |
annual |
1 |
24 hr |
|
|
|
| 2919666 |
melengesterol acetate |
|
FINAL |
2 |
annual |
|
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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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