释义 |
phthalic acid /ˈ(f)θalɪk /noun ChemistryA crystalline acid derived from benzene, with two carboxylic acid groups attached to the benzene ring.- Chemical formula: C6H4(COOH)2; three isomers.
Alkyd is produced by condensation reactions between polycarboxylic acids and polyhydric alcohols - often phthalic acid or anhydride and glycerol....- A wide range of uses has been found for various phthalic acid esters, with the largest portion of these esters being used as plasticizing agents for polyvinyl chloride products.
- Capillaries were immersed in phthalic acid, which has an index of refraction that effectively eliminates optical refraction at the outer wall.
OriginMid 19th century: phthalic, shortening of naphthalic (see naphthalene). |