Propiolic acid
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."
Biomedical References
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
Lachrymator
Yes
Toxic Pneumonitis
Yes
Dermatotoxin
Skin burns
Diseases, Processes, and Activities Linked to This Agent
Processes
Industrial Processes with risk of exposure: