Castner process

Japanese: Castner process(英語表記)Castnerprocess
Castner process

…In the presence of air or oxygen, the aqueous solution dissolves gold and silver, forming cyanide complexes. In industry, molten sodium is reacted with ammonia at 300-400°C to produce sodium amide, which is then reacted with carbon to produce sodium cyanamide, which is then heated to 700°C to convert it into sodium cyanide (Castner process). It can also be produced by the reaction of hydrocyanic acid and sodium hydroxide. …

*Some of the terminology that refers to the "Castner process" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…水溶液は空気または酸素の共存で金および銀を溶解し,シアノ錯塩をつくる。 工業的には,溶融ナトリウムに300~400℃でアンモニアを作用させてナトリウムアミドをつくり,これを炭素と反応させてナトリウムシアナミドとし,さらに700℃に熱してシアン化ナトリウムに変える(カストナー法Castner process)。シアン化水素酸と水酸化ナトリウムの作用でもつくられる。…

※「Castner process」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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