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sodium hydrosulfite

noun, Chemistry
1.
a white, crystalline, water-soluble powder, Na 2 S 2 O 4 , used as a reducing agent, especially in dyeing, and as a bleach.
Also called hydrosulfite, sodium dithionite
[dahy-thahy-uh-nahyt] /daɪˈθaɪ əˌnaɪt/ (Show IPA),
sodium hyposulfite.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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