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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 - 1274 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
74851 ethylene   FINAL 6240 annual          
74873 methyl chloride 21 FINAL 90 annual          
74884 methyl iodide   FINAL 120 8 hr          
74895 methylamine   FINAL 64 8 hr          
74931 methyl mercaptan   FINAL 10 1 hr          
74975 chlorobromomethane   FINAL 10600 8 hr          
74997 methyl acetylene   FINAL 16500 8 hr          
75003 ethyl chloride   FINAL 10000 24 hr          
75014 vinyl chloride   FINAL 100 annual     0.11 1.1 annual
75047 ethylamine   FINAL 92 8 hr          
75058 acetonitrile   FINAL 200 annual          
75070 acetaldehyde   FINAL 9 annual     0.5 5 annual
75081 ethyl mercaptan   FINAL 13 1 hr          
75092 methylene chloride 13 FINAL 2000 annual 14000 1 hr 60 600 annual
75127 formamide   FINAL 600 annual     0.2 2 annual
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
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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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