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液氮有毒吗

更新时间: 2019-05-30 00:00:00     

无毒。液氮:液态的氮气。是惰性的,无色、无臭、无腐蚀性、不可燃、温度极低。氮构成了大气的大部分(体积比78.03%,重量比75.5%)。氮是不活泼的,不支持燃烧,自然不会有毒。汽化时大量吸热接触会造成冻伤。

关键词: 液氮 有毒

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