Product name

Phthalic anhydride

English name

Phthalic anhydride

Alias

2,5-Isobenzofurandione; 2-benzofuran-1,3-dione; 2,2'-(oxydicarbonyl)dibenzoic acid; o-Phthalic anhydride

CAS RN

85-44-9

EINECS No.

201-607-5

Molecular formula

C₈H₄O₃

Molecular weight

148.12

Physico-chemical property

Description White needle-like crystals with a slight odour.
Melting point 131.6 ℃
The boiling point 295 ℃
Relative density 1.527
Flash point 151.7 ℃
Slightly soluble in hot water and ether, soluble in ethanol, benzene and pyridine.

To use

Used as an analytical reagent and also in organic synthesis