Definition of phthalic acid in English:

phthalic acid

nounˈ(f)θalɪkˌTHalik ˈasid

Chemistry

A crystalline acid derived from benzene, with two carboxylic acid groups attached to the benzene ring.
〔化〕苯二甲酸；酞酸
Chemical formula: C₆H₄(COOH)₂; three isomers
Example sentencesExamples
- 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.
- Alkyd is produced by condensation reactions between polycarboxylic acids and polyhydric alcohols - often phthalic acid or anhydride and glycerol.
- Capillaries were immersed in phthalic acid, which has an index of refraction that effectively eliminates optical refraction at the outer wall.

Origin

Mid 19th century: phthalic, shortening of naphthalic (see naphthalene).

Definition of phthalic acid in US English:

phthalic acid

nounˌTHalik ˈasid

Chemistry

A crystalline acid derived from benzene, with two carboxylic acid groups attached to the benzene ring.
〔化〕苯二甲酸；酞酸
Chemical formula: C₆H₄(COOH)₂; three isomers
Example sentencesExamples
- 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.
- Alkyd is produced by condensation reactions between polycarboxylic acids and polyhydric alcohols - often phthalic acid or anhydride and glycerol.

Origin

Mid 19th century: phthalic, shortening of naphthalic (see naphthalene).

词汇	phthalic acid
释义	Definition of phthalic acid in English: phthalic acid nounˈ(f)θalɪkˌTHalik ˈasid Chemistry A crystalline acid derived from benzene, with two carboxylic acid groups attached to the benzene ring. 〔化〕苯二甲酸；酞酸 Chemical formula: C₆H₄(COOH)₂; three isomers Example sentencesExamples 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. Alkyd is produced by condensation reactions between polycarboxylic acids and polyhydric alcohols - often phthalic acid or anhydride and glycerol. Capillaries were immersed in phthalic acid, which has an index of refraction that effectively eliminates optical refraction at the outer wall. Origin Mid 19th century: phthalic, shortening of naphthalic (see naphthalene). Definition of phthalic acid in US English: phthalic acid nounˌTHalik ˈasid Chemistry A crystalline acid derived from benzene, with two carboxylic acid groups attached to the benzene ring. 〔化〕苯二甲酸；酞酸 Chemical formula: C₆H₄(COOH)₂; three isomers Example sentencesExamples 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. Alkyd is produced by condensation reactions between polycarboxylic acids and polyhydric alcohols - often phthalic acid or anhydride and glycerol. Origin Mid 19th century: phthalic, shortening of naphthalic (see naphthalene).
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