persulphate Chem.
(pəˈsʌlfət)
[per- 5 b.]
That sulphate which contains the greatest proportion of oxygen, or of the sulphuric acid radical SO4; as persulphate of iron, now more systematically named ferric sulphate, Fe2(SO4)3; persulphate of mercury, now mercuric sulphate, HgSO4.
| 1813 T. Thomson Ann. Philos. II. 452 If instead of the sulphate of iron we were to make choice of the persulphate of iron. 1880 Garrod & Baxter Mat. Med. 39 A mixed solution of sulphate and persulphate of iron. 1893 Syd. Soc. Lex., Persulphate of mercury, mercuric sulphate. |