Salsoda

Japanese: salsoda
Salsoda

…Sodium carbonate is commonly called washing soda, but the one commonly used is mainly sodium carbonate, and sodium bicarbonate may be added to adjust the alkalinity. Sodium carbonate is available in anhydrous form (soda ash), monohydrate, heptahydrate, and decahydrate (salsoda) depending on the amount of water of crystallization. The monohydrate is stable, but the decahydrate exhibits deliquescence, where water of crystallization separates at temperatures above 32°C, Na 2 CO 3 dissolves in it, and it absorbs moisture in humid summer months. …

*Some of the terminology that mentions "salsoda" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…炭酸ナトリウムを俗に洗濯ソーダともいうが,一般に用いられているものは炭酸ナトリウムを主体とし,これに若干アルカリ性を調整するために炭酸水素ナトリウムを加える場合もある。炭酸ナトリウムは結晶水の量により,無水和物(ソーダ灰),1水和物,7水和物,10水和物(ザルソウsalsoda)がある。1水和物は安定であるが,10水和物は32℃以上で結晶水が分離し,かつそれにNa2CO3が溶解し,湿度の高い夏季には湿気を吸うといった潮解性を示す。…

※「salsoda」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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