Stabilized hydrogen peroxide

Details Stabilized hydrogen peroxide Stabilized hydrogen peroxide

1976-09-27

1978-01-24

Vertiz, O. R.

Chemistry of inorganic compounds

With additive

For hydrogen peroxide

423584, C01B 1502

Patent

active

040704424

ABSTRACT:
Aqueous hydrogen peroxide solutions containing (1) an organophosphorus compound selected from the group consisting of alkylidene diphosphonic acids, aminotri(methylenephosphonic acid), ethylenediaminetetra(methylenephosphonic acid), and soluble alkali metal salts of the foregoing acids an (2) and organic hydroxy compound selected from allyl alcohol, methallyl alcohol, phenol, o-chlorophenol, o-nitrophenol, o-aminophenol, p-chlorophenol, p-nitrophenol, p-aminophenol, and mixtures thereof are stable during use over a pH range of about 0.5 to 10 against catalytic decomposition by heavy metal ions and by surfaces of insoluble heavy metal sulfides. The stabilizer combinations of this invention are apparently synergistic and give unexpected hydrogen peroxide stability. The stabilized hydrogen peroxide solutions of the invention are especially useful in hydrometallurgical processes and in mineral separations and purifications.

REFERENCES:
patent: 3122417 (1964-02-01), Blaser et al.
patent: 3387939 (1968-06-01), Reilly et al.
patent: 3649194 (1972-03-01), Glanville
patent: 3903244 (1975-09-01), Winkley

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