butynedial

butynedial

[‚byüd·ə′nēd·ē·əl]
(organic chemistry)
HOCH2C:CCH2OH White crystals with a melting point of 58°C; soluble in water, aqueous acids, alcohol, and acetone; used as a corrosion inhibitor, defoliant, electroplating brightener, and polymerization accelerator.