Method for producing an aqueous hydroxylamine solution devoid of salt
A process for preparing a salt-free aqueous hydroxylamine solution by reacting an aqueous solution of a hydroxylammonium salt with a base to give a mixture and separating from said mixture by distillation a salt-free aqueous hydroxylamine solution, comprises using as a base an aqueous solution of a...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A process for preparing a salt-free aqueous hydroxylamine solution by reacting an aqueous solution of a hydroxylammonium salt with a base to give a mixture and separating from said mixture by distillation a salt-free aqueous hydroxylamine solution, comprises using as a base an aqueous solution of a mixture of NaOH and KOH in a molar ratio Na
+
:K
+
in the range from 70:30 to 95:5 and with a total concentration of Na
+
and K
+
in the range from 0.1 to 10 m/m % based on the total amount of the mixture. |
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