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You are here: Home / Toxicology / Development Support Document / Final Development Support Documents (DSDs)

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.

Toxicology News!

New Information 3 new DSDs have been posted!

Updated Information1 revised DSD has been posted!

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

magnifying glassDefinitions of ESLs, REVs & AMCVs

 

Files linked from this page are in Portable Document Format (PDF) Adobe Acrobat PDF Document.
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A B C D E F G H I J K L M N O P R S T U V W X Y Z

A

Substance NameChemical Abstract Service Registry Number
(CASRN)
Public CommentsDate of Last Significant Revision
Acetone 67-64-1 Yes December 2013
Acrolein 107-02-8 No March 2014
Acrylonitrile 107-13-1 Yes December 2013

Ammonia

7664-41-7 No June 2014

Arsenic and Inorganic Arsenic Compounds

7440-38-2
(Arsenic)
Yes July 2012

 

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B

Substance NameChemical Abstract Service Registry Number
(CASRN)
Public CommentsDate of Last Significant Revision
Benzene
71-43-2 Yes October 2007
Butadiene, 1,3-
106-99-0 Yes August 2008
Butane, All Isomers

n-Butane
Isobutane



106-97-8
75-28-5

Yes July 2012
Butene, 1-
106-98-9 Yes March 2014
Butene, 2-

cis and trans
cis-butene, -2
trans-butene, -2

 

107-01-7
590-18-1
624-64-6

Yes March 2014
Butoxyethanol
111-76-2 Yes October 2007
Butyl acetate, n
123-86-4 Yes March 2014
Butyraldehyde 123-72-8 Yes March 2014

 

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C - D

Substance NameChemical Abstract Service Registry Number
(CASRN)
Public CommentsDate of Last Significant Revision
Chromium
(All Compounds Except Hexavalent Chromium)

Elemental Chromium
Trivalent Chromium

 

 

7440-47-3
16065-83-1

No October 2009
Crotonaldehyde (Cis and Trans)New Information
4170-30-3 No August 2014
Dichlorobenzene, 1,4-
106-46-7 No March 2014
Dichloroethylene, 1,1-
75-35-4 No October 2007

 

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E - H

Substance NameChemical Abstract Service Registry Number
(CASRN)
Public CommentsDate of Last Significant Revision
Ethylbenzene
100-41-4 No November 2010
Ethylene
74-85-1 Yes April 2008
Formaldehyde
50-00-0

Yes

Yes (24-hour)

August 2008

June 2014

Hexane, n-
110-54-3 No October 2007
Hexavalent Chromium New Information
18540-29-9 Yes August 2014
Hydrogen Chloride
7647-01-0 Yes March 2014
Hydrogen Fluoride and Other Soluble Inorganic Fluorides
7664-39-3 Yes October 2009

 

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I - M

Substance NameChemical Abstract Service Registry Number
(CASRN)
Public CommentsDate of Last Significant Revision
Isobutene
115-11-7 Yes March 2014
Methacrolein
78-85-3 No March 2014
Methanol
67-56-1 Yes March 2014
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

 

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N - R

Substance NameChemical Abstract Service Registry Number
(CASRN)
Public CommentsDate of Last Significant Revision

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
Pentene, All IsomersUpdated Information

1-pentene
c-2-pentene
t-2-pentene

 

109-67-1
627-20-3
646-04-8

No August 2014
Phenol New Information

108-95-2

No August 2014

 

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S - T

Substance NameChemical Abstract Service Registry Number
(CASRN)
Public CommentsDate of Last Significant Revision
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 March 2014
Trichloroethane, 1,1,1-
71-55-6 No June 2011

 

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U - Z

Substance NameChemical Abstract Service Registry Number
(CASRN)
Public CommentsDate of Last Significant Revision
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 March 2014

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