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钠为什么要保存在煤油中

更新时间: 2020-09-09 00:00:00     

1、钠的化学性质太活泼,在空气中易发生化学反应需要密封保存;

2、煤油比重比钠小,钠可以沉入煤油中,这样可以避免和空气接触;

3、煤油本身不和钠反应,且煤油本身易得,价格便宜。

关键词: 为什么 保存 煤油

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