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Reaction of ammonium sulfite and ammonium bisulfite with formaldehyde

S. Stankoviansky

Komensk√Ĺ University, Bratislava

 

Abstract: The reaction of NH4 salts of H2SO3 with HCHO and in the presence of (NH4)2SO4 was described. By applying a proper indicator, such as methyl red, phenolphthalein, or cresol red, N can be detd. in mixts. of (NH4)2SO4 and (NH4)2SO3 and in the mixt. of (NH4)2SO4 with NH4HSO3. The results can be applied in the analysis of sulfite liquor.

Full paper in Portable Document Format: 163a210.pdf (in Slovak)

 

Chemical Papers 16 (3) 210–216 (1962)

Monday, May 27, 2024

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