Title: Thioxanthone

CAS Registry Number: 492-22-8

CAS Name: Thioxanthen-9-one

Additional Names: thiaxanthone; 9-oxothioxanthene

Molecular Formula: C13H8OS

Molecular Weight: 212.27

Percent Composition: C 73.56%, H 3.80%, O 7.54%, S 15.11%

Literature References: Prepd by the interaction of diphenyl sulfide and phosgene with aluminum chloride as catalyst: Szmant et al., J. Org. Chem. 18, 745 (1953).

Properties: Yellow needles from chloroform, mp 211°. bp715 273°. Freely sol in benzene, chloroform, carbon disulfide, hot glacial acetic acid. Slightly sol in alc. Practically insol in water, alkaline solns. Sol in concd sulfuric acid, giving a yellow soln with strong green fluoresence in visible light.

Melting point: mp 211°

Boiling point: bp715 273°