Hydrogen Peroxide → Sodium percarbonate

Participants

Reaction Steps

A method for the preparation of stabilized sodium percarbonate comprising forming a sodium percarbonate core by reacting sodium carbonate with hydrogen peroxide in aqueous phase, crystallizing the resulting sodium percarbonate to obtain a wet sodium percarbonate having mother liquor adhering thereto, spraying said wet sodium percarbonate salt with 5 to 100 liters of a solution or suspension containing sodium perborate per 100 kg of said wet salt, the sodium perborate content of which, expressed as NaBO2.H2O2 is from 15 to 450 g/l, displacing the mother liquor adhering to said wet sodium percarbonate salt by said solution or suspension of sodium perborate so as to completely coat said sodium percarbonate with a coating containing sodium perborate of the formula NaBO2.H2O2.nH2O, wherein n is 0, 1, 2 or 3.

Provenance & Evidence