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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
67663 chloroform   FINAL         0.4 4 annual
86748 carbazole   FINAL         0.4 4 annual
100414 ethylbenzene   FINAL 1000 24 hr     0.4 4 annual
116143 tetrafluoroethylene   FINAL         0.4 4 annual
75569 propylene oxide   FINAL 30 annual     0.3 3 annual
88062 2,4,6-trichlorophenol   FINAL         0.3 3 annual
106467 1,4-dichlorobenzene   FINAL 800 annual     0.25 2.5 annual
88733 1-chloro-2-nitrobenzene   FINAL         0.21 2.1 annual
78875 propylene dichloride   FINAL 4 annual     0.2 2 annual
79016 trichloroethylene   FINAL 2 24 hr     0.2 2 annual
75127 formamide   FINAL 600 annual     0.2 2 annual
119619 benzophenone   FINAL 100 annual     0.2 2 annual
123911 1,4-dioxane   FINAL 100 annual 7200 1 hr 0.2 2 annual
542756 1,3-dichloropropene   FINAL 20 annual     0.2 2 annual
68479981 Diethyl methyl benzenediamine   FINAL 80 24 hr     0.2 2 annual
56235 carbon tetrachloride   FINAL 480 annual     0.17 1.7 annual
75354 vinylidene chloride (1,1-dichloroethylene)   FINAL 7.3 annual     0.15 1.5 annual
90120 1-methyl naphthalene   FINAL 250 annual     0.14 1.4 annual
1313275 molybdenum trioxide   FINAL 5 8 hr     0.12 1.2 annual
75014 vinyl chloride   FINAL 100 annual     0.11 1.1 annual
71432 benzene   FINAL 30 annual 30 24 hr 0.1 1 annual
67721 hexachloroethane 13 FINAL 30 annual 1600 8 hr 0.1 1 annual
75525 nitromethane   FINAL 70 annual     0.1 1 annual
98828 cumene   FINAL 400 annual     0.1 1 annual
122601 phenyl glycidyl ether   FINAL         0.1 1 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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