polythionic, a. Chem.
(pɒlɪθaɪˈɒnɪk)
[f. poly- + -thionic, f. Gr. θεῖον sulphur: see dithionic.]
Containing several atoms of sulphur in combination with H2O6 (distinguished from sulphuric, in which S is combined with H2O4); in polythionic acids, a general name for the acids of this constitution, e.g. pentathionic acid, H2S5O6.
| 1849 D. Campbell Inorg. Chem. 57 Besides the oxides of sulphur already described, three new acids have lately been added. These are known as the polythionic acids,—a name given them by Berzelius. 1868 Watts Dict. Chem. V. 540 A remarkable series..called polythionic acids, containing six atoms of oxygen and two or more atoms of sulphur. |