Process for stabilizing a solution of aqueous hydrogen peroxido of concentrated acid solution, aqueous, concentrated.Of peroxido of hydrogen and process for stabilisation or a solution of peroxigenio stabilized

摘要

Concentrated solutions of hydrogen peroxide tend to decompose on storage, thereby losing their effectiveness, amongst other reasons by virtue of interaction with contaminating transition metals.;Peroxygen compounds are stabilised by contact with a stabilising amount of compound of general formula:- in which X represents a methylene phosphonic acid group of formula -CH₂-(-PO₃H₂) or salt thereof, R represents a tetra methylene diradical, optionally alkyl-substituted, that completes a cyclo-aliphatic ring and thereby establishes the two NX₂ groups in a substantially fixed configuration and Y represents a hydrogen or lower alkyl group.;Preferably, the solutions contain additionally one or more co-stabilisers, including stannate, phosphates, hydroxybenzoic acid, citric acid and nitrate.;The stabiliser system can enable the solution to be diluted, even with municipal water.