| 释义 |
Tollens Chem.|ˈtɒlənz|
[The name of B. C. G. Tollens (1841–1918), German chemist.]
Tollens'(s) reagent: a solution of ammoniacal silver nitrate and sodium hydroxide, used as a test for aldehydes with which it reacts to give a silver precipitate; so Tollens' test (described by Tollens in Ber. d. deut. Chem. Ges. (1882) XV. 1828).
1904S. P. Mulliken Method for Identification Pure Organic Compounds I. 22 (heading) Compounds reducing silver from Tollen's [sic] reagent. 1946F. Schneider Qualitative Organic Microanalysis vii. 198 A blank experiment should be run with the Tollens' reagent and the original substance. 1964N. G. Clark Mod. Organic Chem. x. 187 Tollens's reagent..gives a precipitate of silver, often in the form of a silver mirror. 1981Wingrove & Caret Organic Chem. xxi. 867 A simple chemical test to distinguish between aldehydes and ketones is based on aldehydes being readily oxidized to carboxylic acids whereas ketones are not. Tollens' test..is used most frequently. |