Agent Name

VX

CAS Number

50782-69-9

Formula

C11-H26-N-O2-P-S

Major Category

Toxic Gases & Vapors

Synonyms

(+-)-S-(2-(Bis(1-methylethyl)amino)ethyl) O-ethyl methylphosphonothioate; EA 1701; Ethyl S-2-diisopropylaminoethyl methylphosphonothiolate; Ethyl S-dimethylaminoethyl methylphosphonothiolate; Ethyl-S-diisopropylaminoethyl methylthiophosphonate; Methylphosphonothioic acid S-(2-(bis(1-methylethyl)amino)ethyl) O-ethyl ester; Methylphosphonothioic acid S-(2-(bis(methylethyl)amino)ethyl) O-ethyl ester; Methylphosphonothioic acid, S-(2-diisopropylamino)ethyl O-ethyl ester; Nerve agent; O-Ethyl S-(2-diisopropylaminoethyl) methylphosphonothioate; O-Ethyl S-(2-diisopropylaminoethyl)methylphosphonothioate; O-Ethyl-S-2-diisopropylaminoethylester kyseliny methylthiofosfonove [Czech]; S-(2-Diisopropylaminoethyl) O-ethyl methyl phosphonothiolate; Tx 60; VX (van); Phosphonothioic acid, P-methyl-, S-(2-(bis(1-methylethyl)amino)ethyl) O-ethyl ester; Phosphonothioic acid, methyl-, S-(2-(bis(1-methylethyl)amino)ethyl) O-ethyl ester; Phosphonothioic acid, methyl-, S-(2-(bis(1-methylethyl)amino)ethyl) O-ethyl ester, (+-)-; Phosphonothioic acid, methyl-, S-(2-(diisopropylamino)ethyl) O-ethyl ester; S-(2-Diisopropylaminoethyl)-O-ethyl methylphosphonothiolate; [ChemIDplus] Lethal Nerve Agent (VX); [U.S. Army ERDEC MSDS] UN2810

Category

Chemical Weapons

Description

"VX is a clear, amber-colored, odorless, oily liquid. It is miscible with water and soluble in all solvents. It is the least volatile nerve agent." [ATSDR Medical Management]

Sources/Uses

Chemical warfare;

Comments

VX is an odorless, colorless to straw-colored liquid with a vapor pressure of 0.0007 at 68 degrees F. It persists in the soil for 2-6 days. [Jane, p. 87-8] "As little as one drop of VX on the skin can be fatal and 1 to 10 mL of GA, GB, or GD can be fatal." [ATSDR Medical Management] An extremely active cholinesterase inhibitor; Dermal lowest lethal-dose is 86 mg/kg in humans; Absorption of a fatal-dose results in death within 15 minutes; [CAMEO] An experiment using human volunteers demonstrated that VX vapor can readily be absorbed through skin, and poses as great a hazard to a masked man as GB (sarin) poses to an unmasked man; [HSDB] A lethal cholinesterase inhibitor; Doses potentially lethal may only be slightly more than those producing minimal symptoms; [U.S. Army ERDEC MSDS]

Reference Link

ATSDR - Medical Management: Nerve Agents: Tabun (GA); Sarin (GB); Soman (GD); and VX

Exposure Assessment
TIH

Yes

Vapor Pressure

0.0007 mm Hg

Adverse Effects
Other Poison

Organophosphate

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

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