Agent Name

Methylphosphonic acid

CAS Number

993-13-5

Formula

C-H5-O3-P

Major Category

Other Classes

Synonyms

Methyl phosphonic acid; Methylphosphonate; Methanephosphonic acid; Phosphonic acid, methyl-; [ChemIDplus] UN3261

Category

Organic Acids

Description

White solid; [HSDB] White flakes or crystalline solid; [MSDSonline]

Sources/Uses

Breakdown product of the nerve agents sarin, soman, and VX; Used in the production of lubricant additives, to treat textiles, and to simulate chemical warfare agents; [HSDB]

Comments

A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause chemical pneumonitis; [MSDSonline]

Exposure Assessment
Vapor Pressure

2.0E-6 mm Hg

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Corrosive solid, acidic, organic, n.o.s."

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Processes

Industrial Processes with risk of exposure: