Agent Name |
Dibutyl phosphate |
CAS Number |
107-66-4 |
Formula |
C8-H19-O4-P |
Major Category |
Other Classes |
Synonyms |
DP 4 (coupling agent); Di-n-butyl hydrogen phosphate; Di-n-butyl phosphate; Dibutyl acid phosphate; Dibutyl hydrogen phosphate; Dibutyl phosphate; Phosphoric acid, dibutyl ester; [ChemIDplus] |
Category |
Phosphorus Compounds |
Description |
Pale-amber, odorless liquid; [NIOSH] |
Sources/Uses |
Used as an a catalyst and an antifoaming agent; [ACGIH] Used as a catalyst for resins and paints, a dielectric medium, a plasticizer (added to polymers to effect flexibility and/or toughness), a hydraulic fluid, and an antistatic in the textile industry"; [HSDB] |
Comments |
Workers reported respiratory irritation and headache. [ACGIH] A skin, eye, and respiratory tract irritant; [ICSC] Liver changes were found in animals fed fatal doses of 1000 mg/kg. [HSDB] |
Exposure Assessment |
Skin Designation (ACGIH) |
Yes |
TLV (ACGIH) |
1 ppm |
STEL (ACGIH) |
2 ppm |
PEL (OSHA) |
1 ppm |
IDLH (NIOSH) |
30 ppm |
Excerpts from Documentation for IDLHs |
Basis for revised IDLH: Due to the lack of relevant acute toxicity data, the revised IDLH for dibutyl phosphate is 30 ppm based on an analogy to tributyl phosphate which has a revised IDLH of 30 ppm. |
Vapor Pressure |
9.6 x 10 -05 mm Hg |
Explanatory Notes |
See 2008 Notice of Intended Changes; [ACGIH] |
Flammability (NFPA) |
2: high ambient temperature required |
Adverse Effects |
Hepatotoxin |
Hepatotoxin, Secondary |
Links to Other NLM Databases |
Health Studies |
Human Health Effects from Hazardous Substances Data Bank: DIBUTYL PHOSPHATE
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