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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 - 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
67561 methanol   FINAL 20000 24 hr 28000 1 hr      
67630 isopropyl alcohol   FINAL 220 annual          
67641 acetone   FINAL 5900 8 hr          
67663 chloroform   FINAL         0.4 4 annual
67685 dimethylsulfoxide   FINAL 20 annual          
67721 hexachloroethane 13 FINAL 30 annual 1600 8 hr 0.1 1 annual
68122 N,N-dimethylformamide   FINAL 30 annual          
71238 n-propyl alcohol   FINAL 2500 8 hr          
71363 n-butanol   FINAL 350 annual          
71410 amyl alcohol   FINAL 120 annual          
71432 benzene   FINAL 30 annual 30 24 hr 0.1 1 annual
71556 methyl chloroform   FINAL 6000 24 hr          
72548 DDD (TDE) 12 FINAL         0.01 0.1 annual
72559 DDE, p,p'- 12 FINAL         0.01 0.1 annual
74839 methyl bromide   FINAL 5 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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