Defn: A sulphur hydrocarbon, C4H4S, analogous to furfuran and benzene, and acting as the base of a large number of substances which closely resemble the corresponding aromatic derivatives.
THIOPHENIC
Thi`o*phen"ic, a. (Chem.)
Defn: Of, pertaining to, or derived from, thiophene; specifically, designating a certain acid analogous to benzoic acid.
THIOPHENOL
Thi`o*phe"nol, n. Etym: [Thio- + phenol.] (Chem.)
Defn: A colorless mobile liquid, C6H5.SH, of an offensive odor, and analogous to phenol; — called also phenyl sulphydrate.
THIOPHTHENE
Thi*oph"thene, n. Etym: [Abbreviated from thionaphthene.] (Chem.)
Defn: A double thiophene nucleus, C6H4S2, analogous to thionaphthene, and the base of a large series of compounds. [Written also thiophtene.]
THIOSULPHATE
Thi`o*sul"phate, n. (Chem.)
Defn: A salt of thiosulphuric acid; — formerly called hyposulphite.
Note: The sodium salt called in photography by the name sodium hyposulphite, being used as a solvent for the excess of unchanged silver chloride, bromide, and iodide on the sensitive plate.