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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
8020835 deodorized kerosene 44 FINAL 200 annual 2000 8 hr      
8008206 kerosene 44 FINAL 200 annual 2000 8 hr      
64742967 solvent naphtha (petroleum) heavy aliphatic 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      
2634335 1,2-Benzisothiazol-3(2H)-one 43 FINAL              
1302427 sodium aluminate 43 FINAL              
7440484 cobalt and cobalt compounds that release cobalt ions 42 FINAL 0.2 8 hr     0.00013 0.0013 annual
136527 cobalt 2-ethylhexanoate 42 FINAL 0.2 8 hr     0.00013 0.0013 annual
7681494 sodium fluoride 41 FINAL 60 8 hr          
7632044 sodium perborate 40 FINAL 610 1 hr          
10043353 boric acid 40 FINAL 460 1 hr          
1303862 boron oxide 40 FINAL 520 1 hr          
121437 trimethoxyborine 40 FINAL 770 1 hr          
0 biosam tp-1.5 4 FINAL 0.02 1 hr          
9014011 subtilisin 4 FINAL 0.02 1 hr          
9000902 alpha-amylase 4 FINAL 0.02 1 hr          
9001927 bacillus subtilis neutral protease 4 FINAL 0.02 1 hr          
7664417 ammonia 39 FINAL 350 1 hr          
1336216 ammonium hydroxide 39 FINAL 720 1 hr          
7439954 magnesium 38 FINAL 100 8 hr          
10377603 magnesium nitrate 38 FINAL              
1309428 magnesium hydroxide 38 FINAL 100 8 hr          
1309484 magnesium oxide 38 FINAL 100 8 hr          
1066359 dimethylchlorosilane 36 FINAL 52 annual 5400 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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