Stabilization of hydroxylamine solutions
AssigneeConcept Sciences, Inc.
InventorFrank Michelotti
Life of this patent
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Abstract
The invention provides a stabilized aqueous, semi-aqueous, or non-aqueous solution of hydroxylamine or a partially neutralized hydroxylamine salt and a process therefore. The invention utilizes as a stabilizing agent a specific acetic acid compound.
Claims15
A stabilized aqueous, semi-aqueous, or non-aqueous solution containing hydroxylamine or at least partially neutralized hydroxylamine salt and an effective decomposition inhibiting amount of a compound selected from the group consisting of cis-or trans-1,2-diaminocycloalkyl-N,N,N.sup.1,N.sup.1 -tetraacetic acid;
- cis-or trans-1,4-diaminocycloalkyl-N,N,N.sup.1,N.sup.1 -tetraacetic acid;
- ethylenebis (oxyethylenenitrilo) tetraacetic acid, bis-hexamethylenetriamine pentaacetic acid, hexamethylenediaminetetraacetic acid, tris (2-aminoethyl) aminehexaacetic acid, and iminodiacetic acid.
A process for inhibiting the decomposition of hydroxylamine or at least partially neutralized hydroxylamine salt in an aqueous, semi-aqueous, or non-aqueous solution which comprises a stabilizing amount of a compound selected from the group consisting of cis-or trans-1,2-diaminocycloalkyl-N,N,N.sup.1,N.sup.1 -tetraacetic acid;
- diethyltriaminepentaacetic acid, ethylenediamine-N,N.sup.1 -diacetic acid, ethylenebis (oxyethyleneitrilo) tetraacetic acid, cis-or trans-1,4 diaminocycloalkyl-N,N,N.sup.1,N.sup.1 -tetraacetic acid, bishexamethylenetriamine, pentaacetic acid, hexamethylenediamine-tetraacetic acid, tris (2-aminoethyl) aminehexaacetic acid, and iminodiacetic acid.
Dependencies are inferred from the claim text.