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A hydrated sodium carbonate used as a general cleanser.
(Elements & Compounds) the crystalline decahydrate of sodium carbonate
1. Also called soda ash. an anhydrous, grayish white, odorless, water-soluble powder, Na2CO3, used in the manufacture of glass, ceramics, soaps, paper, petroleum products, sodium salts, as a cleanser, for bleaching, and in water treatment.
2. Also called sal soda, soda, washing soda. a hydrated form of this salt, Na2CO3∙10H2O, used similarly.