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US 5,211,927 AGranted
Method for stabilizing acidic aqueous hydrogen peroxide solution containing copper
AssigneeTokai Denka Kogyo Kabushiki Kaisha
InventorsKatsutoshi Itani, Yoko Miyashiro
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Abstract
An acidic aqueous hydrogen peroxide solution containing copper can be stabilized by adding an amino acid having the formula ##STR1## wherein Ar is an aromatic group.
Claims8
A method for stabilizing an acidic aqueous hydrogen peroxide solution containing copper ions which decompose the hydrogen peroxide catalytically, characterized by adding to said acidic aqueous hydrogen peroxide solution a stabilizing effective amount of an amino acid having an aromatic nucleus represented by the following formula:
- ##STR3## where Ar represents an aromatic group.
Dependencies are inferred from the claim text.