Title: Thianaphthene

CAS Registry Number: 95-15-8

CAS Name: Benzo[b]thiophene

Additional Names: benzothiofuran

Molecular Formula: C8H6S

Molecular Weight: 134.20

Percent Composition: C 71.60%, H 4.51%, S 23.89%

Literature References: Occurs in lignite tar. Catalytic synthesis from styrene and hydrogen sulfide: Moore, Greensfelder, J. Am. Chem. Soc. 69, 2008 (1947); from ethyl benzene and hydrogen sulfide: Hansch, Hawthorne, ibid. 70, 2495 (1948).

Properties: Leaflets. Odor similar to that of naphthalene. mp 32°; bp760 221°; bp20 103-105°. Volatile with steam. Sol in the usual organic solvents.

Melting point: mp 32°

Boiling point: bp760 221°; bp20 103-105°

Use: Manuf of pharmaceuticals, thioindigo.