It is also called crystalline soda or salt. It is usually sodium carbonate decahydrate ( Na2CO3・10H2O ), but it can also contain monohydrate or a double salt with sodium bicarbonate ( sesquicarbonate ) ( Na2CO3・NaHCO3・2H2O ). It dissolves more easily in water than the anhydrous fine powder, i.e. soda ash, and is used for cleaning cotton and wool, as well as washing animal fibers. [Torii Yasuo] [Reference] |Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
結晶ソーダ、ザルソウなどともいう。通常、炭酸ナトリウム十水和物Na2CO3・10H2Oをさすが、一水和物や、炭酸水素ナトリウムとの複塩であるセスキ炭酸塩Na2CO3・NaHCO3・2H2Oなどを含めることもある。無水和物の微細粉末、すなわちソーダ灰より水に溶けやすく、綿布、羊毛などの洗浄や、動物性繊維の洗濯に用いられる。 [鳥居泰男] [参照項目] |出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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