Peroxide bleach and compositions comprising said bleach

摘要

A cost-effective peroxide bleach having improved alkaline stability is obtained by forming an adduct of sodium sulphate, hydrogen peroxide, sodium chloride and an alkali metal phosphate, which is belived to be a mixed crystal having the formula: 4Na2SO4.2H2O2.NaCl (xM2O.yP2O5)n, wherein M is alkalimetal; x is from 1 to 3; y is from 0.5 to 2; and n is from 0.1 to 1. The hydrogen peroxide adduct is suitable for use as a bleach in alkaline detergent compositions in countries with climates where high temperature and high humidity prevail.