Rongalite

(redirected from Formaldehyde sulfoxylate)
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Rongalite

 

the commercial name for the sodium salt of for-maldehydesulfoxylic acid, which is unknown in the free state. Rongalite’s formula is HOCH2S(O)ONa.2H2O. Rongalite forms colorless, hygroscopic crystals, is freely soluble in water, and has a melting point of 63°–64°C. It loses its water of crystallization when heated to 120°C and decomposes at higher temperatures. Rongalite is obtained by, among other methods, reduction of the bisulfite derivative of formaldehyde with zinc dust. Because of its strong reducing properties, it is used in bleaching, for example, textiles, sugar, and fats. It is also used to introduce the—CH2SO2Na group into organic compounds, for example, in the synthesis of neoarsphenamine, to increase the solubility of these compounds in water.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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