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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
127184 tetrachloroethylene 13 FINAL 40 annual 1400 24 hr 4 40 annual
108678 1,3,5-trimethyl benzene 14 FINAL 185 annual 1200 8 hr      
526738 1,2,3-trimethylbenzene 14 FINAL 185 annual 1200 8 hr      
95636 1,2,4-trimethylbenzene 14 FINAL 185 annual 1200 8 hr      
25551137 trimethylbenzenes (mixed isomers) 14 FINAL 185 annual 1200 8 hr      
624920 dimethyl disulfide   FINAL 16 annual 1200 24 hr      
91203 naphthalene   FINAL 3 annual 520 8 hr 0.08 0.8 annual
7782505 chlorine 13 FINAL 0.3 annual 500 8 hr      
7664393 hydrogen fluoride 13 FINAL 14 annual 240 1 hr      
632224 tetramethyl urea 13 FINAL 0.8 annual 230 24 hr      
6192525 p-toluenesulfonic acid monohydrate 9 13 FINAL 1.9 annual 230 1 hr      
108010 dimethylethanolamine   FINAL 5.2 annual 220 8 hr      
104154 p-toluenesulfonic acid 9 13 FINAL 1.8 annual 210 1 hr      
140885 ethyl acrylate   FINAL 120 annual 200 8 hr      
79005 1,1,2-trichloroethane   FINAL 11 annual 160 24 hr 0.063 0.63 annual
2426086 n-butyl glycidyl ether   FINAL 300 1 hr 160 8 hr      
7446119 sulfur trioxide 9,13 FINAL 1 annual 120 1 hr      
7664939 sulfuric acid 9,13 FINAL 1 annual 120 1 hr      
8014957 oleum 9,13 FINAL 1 annual 120 1 hr      
7783064 hydrogen sulfide   FINAL 10 annual 100 24 hr      
94757 2,4-D   FINAL 35 annual 100 8 hr      
62533 aniline   FINAL 1 annual 76 8 hr 0.6 6 annual
57125 cyanide 13 FINAL 0.8 annual 50 1 hr      
90076656 lithium bis(trifluoromethanesulfonyl)imide 13 FINAL 1 annual 40 24 hr      
107051 allyl chloride   FINAL 1 annual 31 8 hr      
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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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