Link to MDEQ Home Link to Michigan.gov
Michigan.gov Home EGLE Home | Michigan Air Permits System Home


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 5 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
64741839 naphtha, heavy thermal cracked 25 FINAL 5600 annual          
64741555 naphtha (petroleum), light catalytic cracked 25 FINAL 5600 annual          
64741599 distillates, (petroleum), light catalytic cracked 24 FINAL 93 annual          
64741828 distillates (petroleum), light thermal cracked 24 FINAL 93 annual          
63716405 n-butoxy propanol (mixed isomers) 23 FINAL 77 annual          
15821837 propylene glycol n-butyl ether (beta isomer) 23 FINAL 77 annual          
29387868 propylene glycol, n-butyl ether (mixed isomers) 23 FINAL 77 annual          
5131668 propylene glycol n-butyl ether (alpha isomer) 23 FINAL 77 annual          
75285 isobutane 22 FINAL 23800 8 hr          
106978 butane 22 FINAL 23800 8 hr          
74873 methyl chloride 21 FINAL 90 annual          
104870 p-tolualdehyde 20 FINAL 440 annual          
620235 m-tolualdehyde 20 FINAL 440 annual          
1330207 mixed xylenes 2 FINAL 390 annual          
106423 p-xylene 2 FINAL 390 annual          
108383 m-xylene 2 FINAL 390 annual          
95476 o-xylene 2 FINAL 390 annual          
19549805 4,6-dimethyl-2-heptanone 19 FINAL 0.1 annual          
13466789 carene, delta 18 FINAL 1120 8 hr          
8006642 turpentine 18 FINAL 1120 8 hr          
80568 pinene, alpha 18 FINAL 1120 8 hr          
127913 pinene, beta 18 FINAL 1120 8 hr          
7440473 chromium 17 FINAL              
1332214 asbestos 16 FINAL         0.000022 0.00022 annual
540885 tert-butyl acetate 15 FINAL 2400 8 hr          
[<-- First Page]  [<- Previous Page]  [Next Page ->] [Last Page -->] 

    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  

 
Back to Main Search Page

For issues related to ITSL/IRSL database content, contact Doreen Lehner at lehnerD@michigan.gov or (517) 582-3779.


Michigan.gov Home  |   EGLE_Home  |   BFS_Home  |   Online Services  |   Contact EGLE  |   ADA  |   FOIA  |   Contact BFS  |   State Web Sites  |   Policies