Propiolic Acid

Synonym(s):Acetylenecarboxylic acid;Propynoic acid

viscous yellow liquid

Propiolic acid is an intermediate in monohalogenated acetylene synthesis and a corrosion inhibitor for steel.

Propiolic acid is a reagent used in the preparation of transition metal complexes, haloalkyl propiolates and halopropenoates.

Reagent employed in the synthesis of transition metal complexes, haloalkyl propiolates, and halopropenoates.

Propiolic acid is reagent used in the synthesis of transition metal complexes

ChEBI: A terminal acetylenic compound that is a 3-carbon, straight-chain, monounsaturated fatty acid having one acetylenic bond.

Melting point:	16-18 °C (lit.)
Boiling point:	102 °C/200 mmHg (lit.)
Density	1.138 g/mL at 25 °C (lit.)
refractive index	n20/D 1.431(lit.)
Flash point:	138 °F
storage temp.	2-8°C
solubility	Chloroform (Soluble), Methanol (Soluble)
form	Liquid After Melting
pka	1.84(at 25℃)
Specific Gravity	1.138
color	Clear colorless to light brown
Water Solubility	miscible
Merck	14,7821
BRN	878176
Stability:	Stable. Incompatible with bases, oxidizing agents, reducing agents. Combustible.
CAS DataBase Reference	471-25-0(CAS DataBase Reference)
NIST Chemistry Reference	Propiolic acid(471-25-0)
EPA Substance Registry System	2-Propynoic acid (471-25-0)

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Corrosion Corrosives GHS05 Skull and Crossbones Acute Toxicity GHS06
GHS Hazard Statements	H226:Flammable liquids H301:Acute toxicity,oral H310:Acute toxicity,dermal H314:Skin corrosion/irritation
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.