PROCESSO PARA ESTABILIZAR SOLUCOES AQUOSAS DE MISTURAS DE DITIONITA DE SODIO E SULFITO DE SODIO

Aqueous solutions containing mixtures of sodium dithionite and sodium sulfite having concentrations of greater than 13 percent by weight of Na2S2O4 are stabilized by adding potassium hydroxide in an amount which is sufficient to provide a residual of from about 1 to about 12 grams per liter of solut...

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Bibliographic Details
Main Author MAGAN P
Format Patent
LanguagePortuguese
Published 08.08.1978
Edition2
Subjects
BLEACHING LEATHER OR FURS
CHEMISTRY
COMPOUNDS THEREOF
DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS,YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS
DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM
DYEING OR PRINTING TEXTILES
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
INORGANIC CHEMISTRY
LAUNDERING
METALLURGY
NON-METALLIC ELEMENTS
TEXTILES
TREATMENT OF TEXTILES OR THE LIKE
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Summary:Aqueous solutions containing mixtures of sodium dithionite and sodium sulfite having concentrations of greater than 13 percent by weight of Na2S2O4 are stabilized by adding potassium hydroxide in an amount which is sufficient to provide a residual of from about 1 to about 12 grams per liter of solution. These solutions can be stored at temperatures of from about 0 DEG to about 15 DEG C. without crystallization taking place.
Bibliography:Application Number: BR19777707014