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Final Development Support Documents (DSDs)

DSDs detail how Effects Screening Levels (ESLs), inhalation Reference Values (ReVs), and inhalation Unit Risk Factors (URFs) were derived for specific chemicals. This page also links to Fact Sheets which summarize information used by the TCEQ Toxicology Division to develop those values.

 

 

Click on the substance name to view its DSD. Click on “Fact Sheet” to view summary information about the substance.

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Substance Name Chemical Abstract Service Registry Number
(CASRN)
Public Comments Date of Last Significant Revision
Acrolein
107-02-8 No November 2010
Benzene
71-43-2 Yes October 2007
Butadiene, 1,3-
106-99-0 Yes August 2008
Butene, 1-
106-98-9 Yes April 2008
Butene, 2-

     cis and trans  
     cis-butene, -2
     trans-butene, -2
107-01-7
590-18-1
624-64-6
Yes April 2008
Butoxyethanol
111-76-2 Yes October 2007
Butyl acetate, n
123-86-4 Yes December 2010
Chromium
(All Compounds Except Hexavalent Chromium)

     Elemental Chromium
     Trivalent Chromium

7440-47-3
16065-83-1
No October 2009
Dichlorobenzene, 1,4-
106-46-7 No February 2009
Dichloroethylene, 1,1-
75-35-4 No October 2007
Ethylbenzene
100-41-4 No November 2010
Ethylene
74-85-1 Yes April 2008
Formaldehyde
50-00-0 Yes August 2008
Hexane, n-
110-54-3 No October 2007
Hydrogen Chloride
7647-01-0 Yes October 2009
Hydrogen Fluoride and Other Soluble Inorganic Fluorides
7664-39-3 Yes October 2009
Isobutene
115-11-7 Yes April 2008
Methacrolein
78-85-3 No October 2009
Methyl Amyl Ketone
110-43-0 No October 2007
Methyl Ethyl Ketone
78-93-3 No November 2010
Methylene Chloride
75-09-2 No June 2011
Nickel and Inorganic Nickel Compounds
    
     Nickel
     Nickel Sulfate
     Nickel Subsulfide
     Nickel Oxide
     Nickel Chloride
7440-02-0
7786-81-4
12035-72-2
1313-99-1
7718-54-9
Yes June 2011
Pentane, All Isomers

     n-Pentane
     Isopentane
     Neopentane
109-66-0
78-78-4
463-82-1
Yes July 2011
Pentenes
    
     1-pentene
     c-2-pentene
     t-2-pentene
109-67-1
627-20-3
646-04-8
No October 2007
Silica, Amorphous and Other Non-Crystalline Forms

     fused
     precipitated silica and silica gel
     pyrogenic colloidal silica
     silica fume
     synthetic amorphous silica
     uncalcined diatomaceous earth
60676-86-0
112926-00-8
112945-52-5
69012-64-2
7631-86-9
61790-53-2
Yes July 2011
Silica, Crystalline Forms
    
     cristobalite
     quartz     
     tridymite
     tripoli 

14464-46-1
14808-60-7
 15468-32-3  
1317-95-9

Yes October 2009
Styrene
100-42-5 Yes August 2008
Tetrachloroethylene(PCE)
127-18-4 Yes April 2008
Texanol
25265-77-4 Yes April 2008
Toluene
108-88-3 Yes April 2008
Trichloroethane, 1,1,1-
71-55-6 No June 2011
Vinyl Chloride
75-01-4 No February 2009
Vinylcyclohexene, 4-
100-40-3 Yes July 2011
Xylenes
    
     mixture
     m-Xylene
     o-Xylene
     p-Xylene
  1330-20-7
   108-38-3
  95-47-6
   106-42-3
Yes February 2009
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