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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 - 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
26471625 toluene diisocyanate 13 FINAL 0.07 annual 0.4 8 hr 0.03 0.3 annual
8008206 kerosene 44 FINAL 200 annual 2000 8 hr      
64742149 petroleum distillates, acid treated 44 FINAL 200 annual 2000 8 hr      
64742310 chemically neutralized light distillates 44 FINAL 200 annual 2000 8 hr      
64742478 hydrotreated light distillate 44 FINAL 200 annual 2000 8 hr      
64742967 solvent naphtha (petroleum) heavy aliphatic 44 FINAL 200 annual 2000 8 hr      
64742810 hydrodesulfurized kerosene 44 FINAL 200 annual 2000 8 hr      
68410979 high benzene naphtha hydrotreated c6-c8 fraction   FINAL 30 annual 30 24 hr 0.1 1 annual
7783064 hydrogen sulfide   FINAL 10 annual 100 24 hr      
7439976 mercury and mercury compounds 7 FINAL 0.3 annual 1 24 hr      
624920 dimethyl disulfide   FINAL 16 annual 1200 24 hr      
632224 tetramethyl urea 13 FINAL 0.8 annual 230 24 hr      
115106 dimethyl ether   FINAL 740 annual 1900 24 hr      
127184 tetrachloroethylene 13 FINAL 40 annual 1400 24 hr 4 40 annual
112243 triethylene tetramine   FINAL 8 annual 3700 24 hr      
106912 glycidyl methacrylate 13 FINAL 0.8 annual 16 24 hr      
71432 benzene   FINAL 30 annual 30 24 hr 0.1 1 annual
79005 1,1,2-trichloroethane   FINAL 11 annual 160 24 hr 0.063 0.63 annual
75092 methylene chloride 13 FINAL 2000 annual 14000 1 hr 60 600 annual
75785 dimethyldichlorosilane   FINAL 1 annual 3700 1 hr      
67561 methanol   FINAL 20000 24 hr 28000 1 hr      
57125 cyanide 13 FINAL 0.8 annual 50 1 hr      
104154 p-toluenesulfonic acid 9 13 FINAL 1.8 annual 210 1 hr      
123911 1,4-dioxane   FINAL 100 annual 7200 1 hr 0.2 2 annual
123922 isoamyl acetate   FINAL 2700 8 hr 5300 1 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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