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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.

NEWA New Public Comment Period Has Begun for the Tert-Butyl Alcohol Proposed DSD

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

magnifying glassapplication/pdfDefinitions of ESLs, REVs & AMCVs

Files linked from this page are in Portable Document Format (PDF) Adobe Acrobat PDF Document.
(Help with PDF.)

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 Name Chemical Abstract Service Registry Number (CASRN) Public Comments

Date Finalized

(Revision Date(s) if applicable)

application/pdfAcetone
67-64-1 application/pdfYes

December 18, 2013

(September 1, 2015-Odor)

application/pdfAcrolein
107-02-8 application/pdfYes

November 19, 2010

(March 14, 2014-chronic ReV; September 14, 2015-24 hr and Odor; February 4, 2016-Short-term ESL)

application/pdfAcrylonitrile
107-13-1 application/pdfYes

December 18, 2013

(September 14, 2015-Odor)

application/pdfAmmonia
7664-41-7 No

June 16, 2014

(September 14, 2015-Odor)

application/pdfArsenic and Inorganic Arsenic Compounds
7440-38-2
(Arsenic)
application/pdfYes

July 31, 2012

B
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfBenzene
71-43-2 application/pdfYes
application/pdfButadiene, 1,3-
106-99-0 application/pdfYes
application/pdfButane, All Isomers

n-Butane
Isobutane


106-97-8
75-28-5

application/pdfYes
application/pdfButene, 1-
106-98-9 application/pdfYes
application/pdfButene, 2-

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


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

application/pdfYes
application/pdfButoxyethanol
111-76-2 application/pdfYes
application/pdfButyl acetate, n 123-86-4 application/pdfYes
application/pdfButyraldehyde
123-72-8 application/pdfYes

C
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfCadmium and Cadmium Compounds

Cadmium
Cadmium Carbonate
Cadmium Chloride
Cadmium Oxide
Cadmium Sulfate
Cadmium Sulfide


7440-43-9
513-78-0
10108-64-2
1306-19-0
10124-36-4
1306-23-6

No
application/pdfCarbon Disulfide
75-15-0 No
application/pdfChlorine
7782-50-5 application/pdfYes
application/pdfChromic Acid Mist
7738-94-5 No
application/pdfChromium

(All Compounds Except Hexavalent Chromium)
Elemental Chromium
Trivalent Chromium


7440-47-3
16065-83-1

No
application/pdfChromium (Hexavalent)

Ammonium dichromate
Calcium chromate
Sodium chromate
Chromium trioxide
Sodium dichromate
Sodium dichromate, dihydrate
Lead chromate
Potassium chromate
Potassium dichromate
Strontium chromate
Zinc chromate

18540-29-9
7789-09-5
13765-19-0
7775-11-3
1333-82-0
10588-01-9
7789-12-0
7758-97-6
7789-00-6
7778-50-9
7789-06-2
13530-65-9

application/pdfYes
application/pdfChromium (Hexavalent) Oral Reference Dose
18540-29-9 application/pdfYes
application/pdfCobalt and Cobalt Compounds
7440-48-4
(Cobalt)
No
application/pdfCrotonaldehyde

trans-crotonaldehyde
cis-crotonaldehyde

4170-30-3
123-73-9
15798-64-8

No

D
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfDecane, All Isomers

n-Decane

Other 74 Isomers


124-18-5
No
application/pdfDibutylamine
111-92-2 No
application/pdfDichlorobenzene, 1,4-
106-46-7 No
application/pdfDichloroethylene, 1,1-
75-35-4 No
Diethanolamine and Triethanolamine

Diethanolamine
Triethanolamine


111-42-2
102-71-6
No
application/pdfDiethylamine
109-89-7 No
application/pdfDiisopropylamine
108-18-9 No

F
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfFormaldehyde
50-00-0 application/pdfYes

application/pdfYes (24-hour)

H
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfHeptane, All Isomers

n-heptane
2,2-dimethylpentane
2,3-dimethylpentane
2,4-dimethylpentane
3,3-dimethylpentane
2-methylhexane
3-methylhexane
3-ethylpentane
2,2,3-trimethylbutane


142-82-5
590-35-2
565-59-3
108-08-7
562-49-2
591-76-4
589-34-4
617-78-7
464-06-2

No
application/pdfHexamethylenediamine
124-09-4 No
application/pdfHexane, All Isomers

n-Hexane
Other 4 Isomers


110-54-3
No
application/pdfHydrogen Chloride
7647-01-0 application/pdfYes
application/pdfHydrogen Fluoride and Other Soluble Inorganic Fluorides
7664-39-3 application/pdfYes

I
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfIsobutene
115-11-7 application/pdfYes
application/pdfIsoprene

78-79-5 No

M
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfManganese and Inorganic Manganese Compounds
7439-96-5 application/pdfYes
application/pdfMethacrolein
78-85-3 No
application/pdfMethanol
67-56-1 application/pdfYes
application/pdfMethoxysilanes (Tri- and Tetra-)

Trimethoxysilane
Methyltrimethoxysilane
Vinyltrimethoxysilane
3-Chloropropyltrimethoxysilane
Tetramethoxysilane


2487-90-3
1185-55-3
2768-02-7
2530-87-2
681-84-5

application/pdfYes
application/pdfMethyl Amyl Ketone
110-43-0 No
application/pdfMethyl Ethyl Ketone
78-93-3 No
application/pdfMethylene Chloride
75-09-2 No
application/pdfMethylene Diphenyl Diisocyanate and Hexamethylene Diisocyanate

4,4-Methylene Diphenyl Diisocyanate (MDI), All Isomers
1,6-Hexamethylene Diisocyanate (HDI), All Isomers



101-68-8
822-06-0
application/pdfYes
application/pdfMonoethanolamine
141-43-5 No

N
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfNickel 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

application/pdfYes
application/pdfNonane, All Isomers

n-Nonane Other 34 Isomers



111-84-2
No

O
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfOctane, All Isomers

Octane
2,2,4-Trimethylpentane (Isooctane)
Other 16 Isomers



111-65-9
540-84-1
No

P
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfPentane, All Isomers

n-Pentane
Isopentane
Neopentane


109-66-0
78-78-4
463-82-1

application/pdfYes
application/pdfPentene, All Isomers

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


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

No
application/pdfPhenol
108-95-2 No
application/pdfPropionaldehyde
123-38-6 application/pdfYes

S
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfSilica, 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

application/pdfYes

application/pdfSilica, Crystalline Forms

NEWapplication/pdfSilica, Crystalline Forms (24-hour)

cristobalite
quartz
tridymite
tripoli


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

application/pdfYes

NEWapplication/pdfYes (24-hour)

application/pdfStyrene
100-42-5 application/pdfYes

T
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfTetrachloroethylene(PCE)
127-18-4 application/pdfYes
application/pdfTexanol
25265-77-4 application/pdfYes
application/pdfToluene
108-88-3 application/pdfYes
application/pdfTrichloroethane, 1,1,1-
71-55-6 No
application/pdfTrimethylbenzenes (TMB)

1,2,3-TMB
1,2,4-TMB
1,3,5-TMB
Mixed Isomers


526-73-6
95-63-6
108-67-8
25551-13-7

No

V
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfVinyl Acetate
108-05-4 application/pdfYes
application/pdfVinyl Chloride
75-01-4 No
application/pdfVinylcyclohexene, 4-
100-40-3 application/pdfYes

X
Substance Name Chemical Abstract Service Registry Number (CASRN) Public Comments
application/pdfXylenes

mixture
m-Xylene
o-Xylene
p-Xylene


1330-20-7
108-38-3
95-47-6
106-42-3

application/pdfYes