Agent Name

Dimethyl hydrogen phosphite

CAS Number

868-85-9

Formula

C2-H7-O3-P

Major Category

Other Classes

Synonyms

Bis(hydroxymethyl)phosphine oxide; Dimethoxyphosphine oxide; Dimethyl acid phosphite; Dimethyl hydrogen phosphonate; Dimethyl phosphite; Dimethyl phosphonate; Dimethylester kyselini fosforite [Czech]; Dimethylester kyseliny fosforite [Czech]; Dimethylfosfit [Czech]; Dimethylfosfonat [Czech]; Dimethylhydrogenphosphite; Hydrogen dimethyl phosphite; Methyl phosphonate ((MeO)2HPO); Phosphonic acid, dimethyl ester; [ChemIDplus]

Category

Phosphite Compounds

Description

Colorless liquid; [HSDB]

Sources/Uses

Used to make insecticides and herbicides; [ChemIDplus] Used as a lubricant additive, an adhesive, a flame retardant for fabrics, a stabilizer in oil and plaster, and as a steel corrosion inhibitor in combination with pyrocatechol; [HSDB] Used to make water treatment chemicals, flame retardants, and pharmaceuticals; [eChemPortal: SIDSUNEP]

Comments

A skin, eye, mucous membrane, and respiratory tract irritant; [CAMEO] A skin and eye irritant; "The substance may have effects on the eyes, resulting in cataract." [ICSC] An irritant; Can be absorbed through skin; Effects in high-dose animal studies include injury to the liver, kidney, cornea, and bone structure; [MSDSonline]

Exposure Assessment
Vapor Pressure

4.52 mm Hg

Lethal Concentration

LC50 (rat) > 20,000 mg/m3

Explanatory Notes

Flash point = 70 deg C; [HSDB]

Adverse Effects
Hepatotoxin

Hepatotoxin, Secondary

IARC Carcinogen

Not Classifiable

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
Processes

Industrial Processes with risk of exposure: