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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 4 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
75150 carbon disulfide   FINAL 700 annual          
75183 dimethylsulfide   FINAL 7 annual          
75218 ethylene oxide   FINAL         0.0002 0.002 annual
75252 bromoform   FINAL         0.9 9 annual
75274 bromodichloromethane   FINAL         0.06 0.6 annual
75285 isobutane 22 FINAL 23800 8 hr          
75296 2-chloropropane   FINAL 100 24 hr          
75310 isopropylamine   FINAL 120 8 hr          
75343 1,1-dichloroethane   FINAL 500 annual          
75354 vinylidene chloride (1,1-dichloroethylene)   FINAL 7.3 annual     0.15 1.5 annual
75365 acetyl chloride   FINAL 0.1 annual          
75376 1,1-difluoroethane   FINAL 400000 annual          
75387 vinylidene fluoride   FINAL 30 annual          
75445 phosgene   FINAL 0.3 annual          
75456 chlorodifluoromethane   FINAL 50000 annual          
75503 trimethylamine   FINAL 120 8 hr          
75525 nitromethane   FINAL 70 annual     0.1 1 annual
75547 methyldichlorosilane   FINAL 4 annual          
75558 1,2-propylenimine   FINAL 5 8 hr          
75569 propylene oxide   FINAL 30 annual     0.3 3 annual
75649 t-butylamine   FINAL 60 annual          
75650 tert-butyl alcohol   FINAL         7 70 annual
75683 1-chloro-1,1-difluoroethane   FINAL 50000 annual          
75694 trichlorofluoromethane   FINAL 130 annual 56200 1 hr      
75718 dichlorodifluoromethane   FINAL 330 annual 49500 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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