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Meaning of sodium hydrosulfite

so'dium hydrosul'fite

Pronunciation: (dī-thī'u-nīt"), [key]
— Chem. Chem.
  1. a white, crystalline, water-soluble powder, NaSO, used as a reducing agent, esp. in dyeing, and as a bleach. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.