Sodium bisulfite, white crystalline powder. It smells of sulfur dioxide. It has an unpleasant taste. Exposure to the air loses part of the sulfur dioxide, while oxidizing to sulfate. Soluble in 3.5 parts cold water, 2 parts boiling water, about 70 parts ethanol, its aqueous solution is acidic. Melting point decomposition. English alias :Sodium hydrogen sulfite; Sodium Bisulphite; sodium hydrogen sulfate; sodium sulfite.
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