sodium sulfite

American  

noun

Chemistry.

1. 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.

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Example Sentences

To make the humanmade version, the team first softened thin strips of oak by boiling them with lye and sodium sulfite.

From Science Magazine • Feb. 15, 2023

Heating solid sodium hydrogen sulfite forms sodium sulfite, sulfur dioxide, and water:

From Textbooks • Feb. 14, 2019

The most feasible method consists in the reduction of diazonium salts with sodium sulfite.

From Organic Syntheses by Conant, James Bryant

In the meantime, a sodium sulfite solution is prepared by dissolving 890 g. of sodium hydroxide, of about 90 per cent purity, in about 1 l. of water and then diluting to 6 l.

From Organic Syntheses by Conant, James Bryant

Notes If the sodium sulfite solution contains an excess of alkali, a black tar tends to form when the solution is warmed, and very little phenylhydrazine is obtained.

From Organic Syntheses by Conant, James Bryant