| 单词 | potassium carbonate |
| 释义 | > as lemmaspotassium carbonate C1. Used attributively in the names of salts and other chemical compounds, as potassium carbonate, potassium chlorate, potassium iodide, etc. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > potassium > [adjective] > naming form potassium1866 1866 H. E. Roscoe Lessons Elem. Chem. x. 97 Chlorine, and potash, give potassium chlorate, potassium chloride, and water. 1866 H. E. Roscoe Lessons Elem. Chem. xix. 163 This is the crude potassium carbonate, called, when purified by recrystallization, pearl-ash. 1938 R. Hum Chem. for Engin. Students i. 13 When potassium chlorate is heated it changes from a white crystalline solid to a liquid from which oxygen can be seen to bubble off. 1952 A. M. Smith Manures & Fertilisers iii. 77 At one time seaweed ash, sometimes called kelp, was an important source of potassium carbonate. 1979 D. Barlow Sexually Transmitted Dis. (BNC) Potassium iodide was a favoured treatment for syphilis for some time following the publication in the Lancet of a series of papers advocating its use. < as lemmas |
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