“calcium cyanamide”的概念、定义、翻译、参考文献-科学参考

calcium cyanamide

Chemistry

A colourless solid, CaCN₂, which sublimes at 1300°C. It is prepared by heating calcium dicarbide at 800°C in a stream of nitrogen:
${CaC}_{2} (s) + N_{2} (g) \to {CaCN}_{2} (s) + C (s)$
The reaction has been used as a method of fixing nitrogen in countries in which cheap electricity is available to make the calcium dicarbide (the cyanamide process). Calcium cyanamide can be used as a fertilizer because it reacts with water to give ammonia and calcium carbonate:
${CaCN}_{2} (s) + 3 H_{2} O (l) \to {CaCO}_{3} (s) + 2 {NH}_{3} (g)$
It is also used in the production of melamine, urea, and certain cyanide salts.

单词	calcium cyanamide
释义	calcium cyanamide Chemistry A colourless solid, CaCN₂, which sublimes at 1300°C. It is prepared by heating calcium dicarbide at 800°C in a stream of nitrogen: ${CaC}_{2} (s) + N_{2} (g) \to {CaCN}_{2} (s) + C (s)$ The reaction has been used as a method of fixing nitrogen in countries in which cheap electricity is available to make the calcium dicarbide (the cyanamide process). Calcium cyanamide can be used as a fertilizer because it reacts with water to give ammonia and calcium carbonate: ${CaCN}_{2} (s) + 3 H_{2} O (l) \to {CaCO}_{3} (s) + 2 {NH}_{3} (g)$ It is also used in the production of melamine, urea, and certain cyanide salts.
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