| 单词 |
bisulphite |
| 释义 |
bisulphite, n. Chem.
Brit. |bʌɪˈsʌlfʌɪt|, U.S. |baɪˈsəlˌfaɪt|
Forms: 18– bisulfite, 18– bisulphite
[‹ bi- comb. form + sulphite n. Compare French bisulfite (1838).]
A compound in which one of the two hydrogen atoms of sulphurous acid, H2SO3, has been replaced by another atom or group (as in sodium bisulphite, NaHSO3, and calcium bisulphite Ca(HSO3)2).
1830W. T. Brande Man. Chem. (ed. 3) I. v. 424 There is also a crystallizable bisulphite of soda. 1876Encycl. Brit. V. 502/2 Acid sulphites or bisulphites in which one-half the hydrogen in sulphurous acid is displaced by a metal. 1907G. M. Norman Systematic Pract. Org. Chem. i. vi. 24 If aldehyde is shaken with a saturated solution of sodium bisulphite a crystalline precipitate is produced. 1938R. Hum Chem. for Engin. Students xxii. 605 Calcium Bisulphite..is used as an antiseptic in the brewing and sugar industries. 1999C. Mendelson Home Comforts xiii. 179/1 The growth of food molds is inhibited by a number of food additives, including sodium bisulfite. |
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