Product name

Terephthalic acid

English name

Terephthalic acid

Alias

Benzene-1,4-dicarboxylic acid; P-Phthelic Acid; p-Phthalic acid; 1,4-dicarboxybenzene; 1,4-phthalicacid; Acide terephtalique; acideterephtalique; acideterephtalique(french); Benzene-p-dicarboxylic acid; Kyselina tereftalova; Kyselina terftalova; (1aR,1bS,4aR,7aS,7bS,8R,9R,9aS)-4a,7b,9,9a-tetrahydroxy-3-(hydroxymethyl)-1,1,6,8-tetramethyl-1,1a,1b,4,4a,7a,7b,8,9,9a-decahydro-5H-cyclopropa[3,4]benzo[1,2-e]azulen-5-one; PTA

CAS RN

100-21-0

EINECS No.

202-830-0

Molecular formula

C₈H₆O₄

Molecular weight

166.13324

Physico-chemical property

Appearance White acicular crystal or powder.
Relative density 1.510g/cm3
Solubility Soluble in alkali solution, slightly soluble in hot ethanol, insoluble in water, ether, glacial acetic acid and chloroform.

To use

It is an important raw material for manufacturing polyester resin, film, fiber, insulating paint and engineering plastics.