| 单词 | potassium terchromate |
| 释义 | > as lemmaspotassium terchromate a. With the names of classes of compounds, as acetate, bromide, chloride, chromate, fluoride, iodate, nitrate, oxide, sulphate, tannate, etc., expressing the presence of three atoms, molecules, or combining equivalents of the element or radical indicated by the rest of the word, as nitrogen terchloride, NCl3, potassium terchromate, K2O.3CrO3, or K2Cr3O10, ternitrate of bismuth, Bi(NO3)3, etc. Now mostly superseded by tri- comb. form. ΚΠ 1836 W. T. Brande Man. Chem. (ed. 4) 773 Terchloride of Chromium. (Chr+O3C.) 1838 T. Thomson Chem. Org. Bodies 258 It is..a tertannate. 1849 D. Campbell Pract. Text-bk. Inorg. Chem. 111 Besides this iodate of potash, there are other two, namely, a biniodate and a teriodate. 1853 W. Gregory Inorg. Chem. (ed. 3) 240 Antimony... This valuable metal is chiefly found in the mineral called antimony, which is a tersulphuret, SbS3. 1853 A. Ure Dict. Arts (ed. 4) I. 1058 The explosive compound, the teriodide of nitrogen. 1856 W. A. Miller Elements Chem. II. 914 Terfluoride of chromium forms deep red fumes of chromic acid. 1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxiii. 230 A third salt, termed ter-chromate [1882 trichromate], K2Cr3O10, crystallizes out. 1883 J. T. Taylor Hardwich's Man. Photogr. Chem. (ed. 9) 55 There are two Chlorides of Gold—viz., the Protochloride and the Terchloride. The latter is the one used in Photography. < as lemmas |
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