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Avantor Sciences

Preservative System of Stabilized 30% Hydrogen Peroxide Products

Information

Question What is the preservative system used in your stabilized hydrogen peroxide products and what is the possible decomposition pathway?
Answer

Avantor Performance Materials stabilized 30% hydrogen peroxide (H2O2) products are generally stabilized with potassium stanate (tin salt) typically in the concentration range of 380 ppb as tin (maximum concentration is 500 ppb as tin). The stabilized H2O2 also contains a sequestration agent of organic phosphenate typically in the concentration range of 710 ppb as phosphate (maximum concentration is 1500 ppb as phosphate).

Avantor Performance Materials unpreserved H2O2 products have an extremely exothermic decomposition pathway, which takes place in the presence of small amounts of catalyst even in aqueous solution. This decomposition can be catalyzed both homogeneously by dissolved ions (especially of heavy metals, iron, copper, manganese, and chromium) and heterogeneously by suspended oxides and hydroxides (e.g., manganese, iron, copper, palladium, or mercury) and by metals such as platinum, osmium, and silver. For this reason, it is typical that our unpreserved H2O2 products have much lower metals content than the preserved H2O2 products.

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Keyword 2186, 5155, 2189, 5240, v340
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