1106. Benzoresorcinol

Nomenclature

CAS number: 131-56-6
(2,4-Dihydroxyphenyl)phenylmethanone; 2,4-dihydroxybenzophenone; 4-benzoylresorcinol; resbenzophenone; benzophenone-1; Uvinul 400 (BASF).
C13H10O3; mol wt 214.22.
C 72.89%, H 4.71%, O 22.41%.

Description and references

Prepd from benzoyl chloride and resorcinol: Dobner, Ann. 210, 246 (1881); by Fries rearrangement: Amin, Shah, J. Indian Chem. Soc. 29, 351 (1952).

Chemical structure

Properties

Needles from hot water, mp 144-145°. Practically insol in cold water. Easily sol in alcohol, ether, glacial acetic acid; scarcely sol in cold benzene.

Use

Ultraviolet light absorber, esp in paints and plastics.