| 单词 | ammonium carbonate |
| 释义 | ammonium carbonate in British Englishnoun 1. an unstable pungent soluble white powder that is a double salt of ammonium bicarbonate and ammonium carbamate: used in the manufacture of baking powder, smelling salts, and ammonium compounds. Formula: (NH4)HCO3.(NH4)CO2NH2 2. an unstable substance that is produced by treating this compound with ammonia. Formula: (NH4)2CO3 ammonium carbonate in American Englishnoun Chemistry a water-soluble mixture of ammonium bicarbonate and ammonium carbamate, occurring either as a white powderor in colorless, hard, crystalline masses: used chiefly in the manufacture of smelling salts and baking powder Word origin [1880–85]This word is first recorded in the period 1880–85. Other words that entered Englishat around the same time include: barnstorm, impressionism, quotation mark, rain check, regionalismExamples of 'ammonium carbonate' in a sentence |
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