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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 3 of 51 - 1274 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
131179 diallyl phthalate   FINAL         0.1 1 annual
106923 allyl glycidyl ether   FINAL         0.1 1 annual
630206 1,1,1,2-tetrachloroethane   FINAL         0.1 1 annual
68410979 high benzene naphtha hydrotreated c6-c8 fraction   FINAL 30 annual 30 24 hr 0.1 1 annual
98000 furfuryl alcohol   FINAL 5 annual     0.09 0.9 annual
121697 dimethylaniline   FINAL         0.085 0.85 annual
91203 naphthalene   FINAL 3 annual 520 8 hr 0.08 0.8 annual
50000 formaldehyde   FINAL 30 24 hr     0.08 0.8 annual
57410 phenytoin   FINAL         0.07 0.7 annual
95534 o-toluidine   FINAL         0.07 0.7 annual
79436 Dichloroacetic acid   FINAL 0.5 annual     0.07 0.7 annual
96231 1,3-dichloro-2-propanol   FINAL 3 annual     0.07 0.7 annual
79005 1,1,2-trichloroethane   FINAL 11 annual 160 24 hr 0.063 0.63 annual
98011 furfural   FINAL         0.06 0.6 annual
75274 bromodichloromethane   FINAL         0.06 0.6 annual
123319 hydroquinone   FINAL 140 annual     0.058 0.58 annual
87683 hexachlorobutadiene   FINAL         0.05 0.5 annual
19666309 oxadiazon   FINAL         0.05 0.5 annual
124481 chlorodibromomethane   FINAL 70 annual     0.042 0.42 annual
107062 1,2-dichloroethane   FINAL         0.04 0.4 annual
134292 o-ansidine hydrochloride   FINAL         0.04 0.4 annual
88120 n-vinylpyrrolidinone   FINAL         0.04 0.4 annual
119904 3,3'-dimethoxybenzidine   FINAL 9.8 annual     0.039 0.39 annual
106990 1,3-butadiene   FINAL 33 annual     0.03 0.3 annual
106490 p-toluidine   FINAL 2 annual     0.03 0.3 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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