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Michigan Air Toxics System
Initial Threshold Screening Level/Initial Risk Screening Level (ITSL/IRSL)
Toxics Screening Level Query Results

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.

Page 1 of 51 - 1271 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
50000 formaldehyde   FINAL 30 24 hr     0.08 0.8 annual
50293 ddt 12 FINAL         0.01 0.1 annual
50328 benzo(a)pyrene 5 FINAL 0.002 24 hr     0.001 0.01 annual
56553 benz(a)anthracene 5 FINAL             annual
57410 phenytoin   FINAL         0.07 0.7 annual
57749 chlordane (technical)   FINAL 0.7 annual     0.01 0.1 annual
62759 n-nitrosodimethylamine   FINAL         0.00007 0.0007 annual
60344 methyl hydrazine   FINAL 0.03 annual     0.0087 0.087 annual
60571 dieldrin   FINAL         0.0002 0.002 annual
62533 aniline   FINAL 1 annual 76 8 hr 0.6 6 annual
53703 dibenz(a,h)anthracene 5 FINAL             annual
56235 carbon tetrachloride   FINAL 480 annual     0.17 1.7 annual
67663 chloroform   FINAL         0.4 4 annual
72548 DDD (TDE) 12 FINAL         0.01 0.1 annual
72559 DDE, p,p'- 12 FINAL         0.01 0.1 annual
67721 hexachloroethane 13 FINAL 30 annual 1600 8 hr 0.1 1 annual
71432 benzene   FINAL 30 annual 30 24 hr 0.1 1 annual
75014 vinyl chloride   FINAL 100 annual     0.11 1.1 annual
75092 methylene chloride 13 FINAL 2000 annual 14000 1 hr 60 600 annual
75127 formamide   FINAL 600 annual     0.2 2 annual
75218 ethylene oxide   FINAL         0.0002 0.002 annual
75252 bromoform   FINAL         0.9 9 annual
75274 bromodichloromethane   FINAL         0.06 0.6 annual
75354 vinylidene chloride (1,1-dichloroethylene)   FINAL 7.3 annual     0.15 1.5 annual
75070 acetaldehyde   FINAL 9 annual     0.5 5 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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