Character of Sodium carbonate white powder crystal; When it dissolves in water, the liquid will have alkalinity, and emit heat; Sodium carbonate and acid react to salt.
性状白色粉状结晶；易溶于水，水溶液显碱性，并放出热量，易潮解；与酸发生反应生成盐。
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Light calcium carbonate was usually manufactured by chemical process, so its high alkalinity could not be avoided easily.