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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 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
75525 nitromethane   FINAL 70 annual     0.1 1 annual
75650 tert-butyl alcohol   FINAL         7 70 annual
76448 heptachlor   FINAL         0.0008 0.008 annual
75569 propylene oxide   FINAL 30 annual     0.3 3 annual
78591 isophorone   FINAL 280 1 hr     3.7 37 annual
78875 propylene dichloride   FINAL 4 annual     0.2 2 annual
79436 Dichloroacetic acid   FINAL 0.5 annual     0.07 0.7 annual
79469 2-nitropropane   FINAL 20 annual     0.00037 0.0037 annual
79005 1,1,2-trichloroethane   FINAL 11 annual 160 24 hr 0.063 0.63 annual
79016 trichloroethylene   FINAL 2 24 hr     0.2 2 annual
79061 acrylamide   FINAL 6 24 hr     0.005 0.05 annual
78795 isoprene   FINAL         0.02 0.2 annual
79345 1,1,2,2-tetrachloroethane   FINAL         0.02 0.2 annual
86748 carbazole   FINAL         0.4 4 annual
87627 2,6-xylidine   FINAL         0.78 7.8 annual
87683 hexachlorobutadiene   FINAL         0.05 0.5 annual
87865 pentachlorophenol   FINAL 20 annual     0.009 0.09 annual
88062 2,4,6-trichlorophenol   FINAL         0.3 3 annual
88120 n-vinylpyrrolidinone   FINAL         0.04 0.4 annual
88733 1-chloro-2-nitrobenzene   FINAL         0.21 2.1 annual
90120 1-methyl naphthalene   FINAL 250 annual     0.14 1.4 annual
90437 o-phenylphenol   FINAL         1.1 11 annual
91087 2,6-toluene diisocyanate 13 FINAL 0.07 annual 0.4 8 hr 0.03 0.3 annual
91178 decahydronaphthalene   FINAL         0.03 0.3 annual
91203 naphthalene   FINAL 3 annual 520 8 hr 0.08 0.8 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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