Agent Name

Propiolic acid

CAS Number

471-25-0

Formula

C3-H2-O2

Major Category

Other Classes

Synonyms

Acetylenecarboxylic acid; Carboxyacetylene; Propargylic acid; Propynoic acid; 2-Propynoic acid; [ChemIDplus] Carboxy acetylene; [HSDB] UN2920

Category

Organic Acids

Description

Liquid; mp = 9 deg C; [Merck Index] Solid or liquid with an odor like acetic acid; mp = 18 deg C; [HSDB] Clear dark yellow liquid; mp = 16-18 deg C; [Sigma-Aldrich MSDS]

Sources/Uses

Used as a laboratory reagent, to make transition metal complexes, haloalkyl propiolates, and halopropenoates, and for the control of nematodes in agriculture (outside the US); [HSDB]

Comments

Causes burns; [HSDB] Causes burns and lachrymation; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; Highly toxic skin absorption; Toxic by ingestion; [Sigma-Aldrich MSDS] See "1-Butyne." See "Acrylic acid."

Exposure Assessment
Vapor Pressure

3.5 mm Hg

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Corrosive liquid, flammable, n.o.s."

Adverse Effects
Lacrimator

Yes

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: