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卤族元素中有许多重要的化合物,其中盐类物质中氯化钠、氯化镁、氯化铵、氯化钙性质较为突出,用途也比较广泛,可称其为“氯氏”四兄妹。氯化钠,俗名食盐,在维持人体电解质平衡中具有不可替代的作用。离开它生命就会停止。纯净的氯化钠是无色透明的立方晶体,密度为2.165g/cm3,熔点为801℃,沸点为1442℃,味咸,p H呈中性,易溶于水和甘油,难溶于乙醇。水溶
There are many important compounds in the halogen elements, among them sodium chloride, magnesium chloride, ammonium chloride, calcium chloride are more prominent in nature and are used for a long time. They can be called “chlorine” siblings. Sodium chloride, commonly known as salt, plays an irreplaceable role in maintaining the balance of the human body's electrolytes. Leave it life will stop. Pure sodium chloride is a colorless and transparent cubic crystal, density of 2.165g / cm3, the melting point of 801 ° C, the boiling point of 1442 ° C, taste salty, p H neutral, soluble in water and glycerol, insoluble in ethanol . Water-soluble