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LC4539 Phenylacetylenecarboxylic acid
for synthesis


Order number Packaging Quantity Price €
AC31539 Glass bottle 5 g 31.28
AC31539 Glass bottle 25 g 115.20


Product information
Synonyms Phenylpropiolic acid
Hill Formula C9H6O2
HS Code 2916 39 00
EC number 211-285-8
Molar mass 146.14 g/mol
CAS number 637-44-5


Chemical and physical data
Solubility (20 °C) slightly soluble
Melting point 135 – 138 °C
Molar mass 146.14 g/mol


Safety information
R Phrase R 36/37/38
Irritating to eyes, respiratory system and skin.
Categories of danger irritant
Hazard Symbol Irritant
Storage class 10 – 13 Other liquids and solids
WGK WGK 3 highly water endangering
Disposal 3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.


Assay (acidimetric) ≥ 98 %
Melting range
– lower value
≥ 135 °C
– upper value ≤ 138 °C
Identity (IR) passes test