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LC191 Acetylenedicarboxylic acid
for synthesis


Order number Packaging Quantity Price €
AC27191 Glass bottle 10 g 27.675


Product information
Synonyms Butynedioic acid
Hill Formula C4H2O4
HS Code 2917 19 90
EC number 205-536-0
Molar mass 114.05 g/mol
Storage Store at +2°C to +8°C.
CAS number 142-45-0


Chemical and physical data
Solubility (20 °C) soluble
Melting point 180 – 185 °C
Molar mass 114.05 g/mol
Bulk density 550 kg/m3
Flash point 131 °C


Safety information
Storage class 10 – 13 Other liquids and solids
WGK WGK 3 highly water endangering
Disposal 4
Liquid organic acids or solutions should be diluted, if necessary, and carefully neutralized with sodium hydrogen carbonate (Cat. No. 106323) or with sodium hydroxide (Cat. No 106462). Before filling into container D, check the pH with pH universal indicator strips (Cat. No. 109535).


Transport information
Declaration (transport by sea) IMDG-Code No Dangerous Good
Declaration (transport by air) IATA-DGR No Dangerous Good


Assay (acidimetric) ≥ 97 %
Identity (IR) passes test




– as quinine at 365 nm