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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 9 of 52 - 1277 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
106514 quinone   FINAL 4.4 8 hr          
91225 quinoline   FINAL         0.001 0.01 annual
82586547 quinapril step 8   FINAL 2 annual          
84632655 pyrrolo[3,4-c]pyrrole-1,4-dione,3,6-bis(4-chlorophenyl)-2,5-dihydro   FINAL 0.1 annual          
110861 pyridine   FINAL 3.5 annual          
129000 pyrene   FINAL 100 annual          
1067250 propyltrimethoxysilane   FINAL 1000 annual          
75569 propylene oxide   FINAL 30 annual     0.3 3 annual
29387868 propylene glycol, n-butyl ether (mixed isomers) 23 FINAL 77 annual          
57018527 propylene glycol tert-butyl ether   FINAL         0.7 7 annual
770354 propylene glycol phenyl ether   FINAL 8 annual          
15821837 propylene glycol n-butyl ether (beta isomer) 23 FINAL 77 annual          
5131668 propylene glycol n-butyl ether (alpha isomer) 23 FINAL 77 annual          
41593388 propylene glycol monophenyl ether   FINAL 0.1 annual          
108656 propylene glycol monomethyl ether acetate   FINAL 5400 1 hr          
107982 propylene glycol monomethyl ether   FINAL 3700 1 hr          
1320678 propylene glycol monomethyl ether   FINAL 2000 annual          
52125538 propylene glycol monoethyl ether (mixture)   FINAL 23 annual          
1569024 propylene glycol monoethyl ether (beta)   FINAL 240 annual          
19089475 propylene glycol monoethyl ether (alpha)   FINAL 23 annual          
78875 propylene dichloride   FINAL 4 annual     0.2 2 annual
108327 propylene carbonate   FINAL 700 annual          
115071 propylene   FINAL 8600 8 hr          
103651 propylbenzene   FINAL 20 annual          
107108 propylamine   FINAL 112 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 [email protected] or (517) 582-3779.

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