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sodium sulfite

noun, Chemistry
a white, crystalline, water-soluble solid, Na 2 SO 3 , used chiefly as a food preservative, as a bleaching agent, and as a developer in photography. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for sodium sulfite
  • After developing, the film needed to be rinsed in sodium sulfite, washed in water and hung up to dry.
  • Use two test solutions: sodium sulfite and permanganate.

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