positive: 氯化钠 (Sodium chloride),化学式NaCl,是我们日常食用的食盐的主要成分。氯化钠为无色立方结晶或细小结晶粉末,咸味,其来源主要是海水。不纯的氯化钠在空气中有潮解性。氯化钠稳定性比较好,其水溶液呈中性,工业上一般采用电解饱和氯化钠溶液的方法来生产氢气、氯气和烧碱(氢氧化钠)及其他化工产品(一般称为氯碱工业)也可用于矿石冶炼(电解熔融的氯化钠晶体生产活泼金属钠),医疗上用来配置生理盐水,生活上可用于调味品。
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