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亚硝酸钠 - Wikipedia

亚硝酸钠

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亚硝酸钠
常规
别名 工业盐
CAS号 7632-00-0
分子式 NaNO2
摩尔质量 69.00 g/mol
物理性质
熔点 271℃
沸点 320℃(分解)
固态
外观 白色或微带淡黄色斜方晶系结晶或粉末
密度 2.168×103 kg/m3
安全性
主要危险 对皮肤有腐蚀性;有毒
若非注明,所有数据都依從国际单位制,以及来自标准状况的条件。

亚硝酸钠NaNO2)是亚硝酸根离子离子化和生成的无机盐。

亚硝酸钠易潮解,易溶于和液氨,其水溶液性,其pH约为9,微溶于乙醇甲醇乙醚等有机溶剂。亚硝酸钠有咸味,又是被用来制造假食盐。亚硝酸钠暴露于空气中会与氧气反应生成硝酸钠。若加热到320℃以上则分解,生成氧气、氧化氮和氧化钠。接触有机物易燃烧爆炸。

[编辑] 作用与危害

在漂白、电镀金属处理等方面有应用,被称为工业盐。由于其具有咸味且价钱便宜,常在非法食品制作是用作食盐的不合理替代品,因为亚硝酸钠有毒,含有工业盐的食品对人体危害很大。

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