Agent Name

Dibutyl phenyl phosphate

CAS Number

2528-36-1

Formula

C14-H23-O4-P

Major Category

Other Classes

Synonyms

Butyl phenyl phosphate ((BuO)2(PhO)PO); Dibutyl phenyl phosphate; Phosphoric acid, dibutyl phenyl ester; Di(n-butyl) phenyl phosphate; [ChemIDplus]

Category

Organophosphates, Other

Description

Clear slightly yellow liquid; [HSDB] Very low solubility in water; [ACGIH]

Sources/Uses

Used as a hydraulic fluid in aircraft engines and as a plasticizer for polyvinyl chloride; [HSDB] Use in the USA is limited; Workers may be exposed during aircraft maintenance, but exposure levels have not been reported; [ACGIH]

Comments

Oral LD50 (rats) = 2620 mg/kg; Dermal LD50 (rabbits) = 5000 mg/kg; Reduces plasma cholinesterase activity and causes liver injury in high-dose animal studies; A skin, eye, and respiratory tract irritant; [ACGIH] An irritant; [MSDSonline]

Exposure Assessment
BEI

Cholinesterase activity in red cells = 70% of individual's baseline, sample time discretionary; [ACGIH]

Skin Designation (ACGIH)

Yes

TLV (ACGIH)

0.3 ppm

Vapor Pressure

0.007 mm Hg

Lethal Concentration

LC (rat) > 7mg/m3

Explanatory Notes

Flash point = 177 deg C; [HSDB]

Adverse Effects
Hepatotoxin

Hepatotoxin, Secondary

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Other Information

No other related information on this agent was found.