ES297540A1 - A procedure for the preparation of a sodium perborate of elevated porosity and fluent (Machine-translation by Google Translate, not legally binding)
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A procedure for the preparation of a sodium perborate of elevated porosity and fluent (Machine-translation by Google Translate, not legally binding)
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Kali Chemie AG
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Kali Chemie AG
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Treatment Of Water By Oxidation Or Reduction
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Abstract
A process for the preparation of a high porosity and flowing sodium perborate with an apparent specific gravity between 0.25 and 0.45 kg/l by reaction of a solution of sodium metaborate with hydrogen peroxide, characterized in that while stirring a a temperature between 10 and 15º C. an aqueous solution of sodium metaborate is added to an aqueous solution of hydrogen peroxide until the beginning of crystallization, and then the addition of both sodium metaborate and hydrogen peroxide is continued, the ratio must be maintained molar hydrogen peroxide to sodium metaborate between 1.1 and 1.8, and finally, at the desired conclusion of the precipitation, hydrogen peroxide present in excess reacts with additional sodium metaborate. (Machine-translation by Google Translate, not legally binding)
ES0297540A1963-04-131964-03-12A procedure for the preparation of a sodium perborate of elevated porosity and fluent (Machine-translation by Google Translate, not legally binding)
ExpiredES297540A1
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