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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 1 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
431890 hfc-227ea 13 FINAL 130000 annual 5560000 1 hr      
75694 trichlorofluoromethane   FINAL 130 annual 56200 1 hr      
75718 dichlorodifluoromethane   FINAL 330 annual 49500 8 hr      
67561 methanol   FINAL 20000 24 hr 28000 1 hr      
75092 methylene chloride 13 FINAL 2000 annual 14000 1 hr 60 600 annual
19430934 perfluorobutylethylene   FINAL 2600 annual 10000 8 hr      
123911 1,4-dioxane   FINAL 100 annual 7200 1 hr 0.2 2 annual
1066359 dimethylchlorosilane 36 FINAL 52 annual 5400 1 hr      
123922 isoamyl acetate   FINAL 2700 8 hr 5300 1 hr      
108907 chlorobenzene   FINAL 50 annual 4400 8 hr      
112243 triethylene tetramine   FINAL 8 annual 3700 24 hr      
75785 dimethyldichlorosilane   FINAL 1 annual 3700 1 hr      
4109960 dichlorosilane 36 FINAL 28 annual 2900 1 hr      
7647010 hydrogen chloride 13 FINAL 20 annual 2100 1 hr      
8008206 kerosene 44 FINAL 200 annual 2000 8 hr      
64742478 hydrotreated light distillate 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      
64742810 hydrodesulfurized kerosene 44 FINAL 200 annual 2000 8 hr      
64742967 solvent naphtha (petroleum) heavy aliphatic 44 FINAL 200 annual 2000 8 hr      
8020835 deodorized kerosene 44 FINAL 200 annual 2000 8 hr      
0 jet fuels 44 FINAL 200 annual 2000 8 hr      
115106 dimethyl ether   FINAL 740 annual 1900 24 hr      
67721 hexachloroethane 13 FINAL 30 annual 1600 8 hr 0.1 1 annual
127184 tetrachloroethylene 13 FINAL 40 annual 1400 24 hr 4 40 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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