METHOD FOR PRODUCING AN AQUEOUS HYDROXYLAMINE SOLUTION DEVOID OF SALT

METHOD FOR PRODUCING AN AQUEOUS HYDROXYLAMINE SOLUTION DEVOID OF SALT

The invention relates to a method for producing an aqueous hydroxylamine solution that is devoid of salt by reacting an aqueous solution of a hydroxylammonium salt with a base to obtain a mixture and by separating an aqueous hydroxylamine solution devoid of salt by distillation from said mixture. Th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KERTH, STEFFEN, STROEFER, ECKHARD, WOSTBROCK, KARL-HEINZ, WEBER, MARKUS
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:The invention relates to a method for producing an aqueous hydroxylamine solution that is devoid of salt by reacting an aqueous solution of a hydroxylammonium salt with a base to obtain a mixture and by separating an aqueous hydroxylamine solution devoid of salt by distillation from said mixture. The method is characterised in that an aqueous solution of a mixtur e of NaOH and KOH with a molar ratio of Na+: K+ in the region of between 70: 3 0 and 95: 5 and a total concentration of Na+ and K+ in the region of between 0 .1 and 10 m/m % (in relation to the total quantity of the mixture) is used as t he base.