TH8162B - How to stabilize a concentrated hydrogen peroxide solution? - Google Patents

Abstract

Hydrogen peroxide concentrated solutions tend to decompose in long time storage therefore losing efficiency For various reasons too, exposure to foreign transition metals It stabilizes the oxygen compound by exposure to the available quantities. Stabilizing effect of compounds with general formula (chemical formula) where X is the formula methylene phosphonic acid group -CH2-(-PO3H2), or its salt, R is tetramethylene diradical, optional. alkyl-substituted by making the ring cyclo-aliphatic complete. and to create two NX2 groups in a significantly definite structure, and Y is a hydrogen or lower alkyl group. Ideally, such a solution contains one type of co-stabilizer or more than can This includes stannates, phosphates, hydroxybenzoic citric acid and nitrates. This will allow the solution to be diluted even if it is tap water.

Claims (11)

1. The process of stabilizing a highly acidic aqueous hydrogen peroxide solution by mixing a peroxide compound with a stabilizer in an effective ratio. A characteristic stabilizer has the following chemical formula: where X represents a methylenephosphonic acid group with the formula -CH2-(PO3H2) or its salt; R represents tetramethylenediracicol, which may be selectively alkyl-substituted, completing the cyclo-aliphatic ring and thus forming two NX2 groups in a definite structure; and Y represents hydrogen or a lower alkyl group. 2. The characteristic process under claim 1 is that this stabilizer is cyclohexane-1,2-diaminotetramethylline phosphonic acid. 3. The process described in claim 1 or 2 is characterized by the addition of a stabilizer to an acidic aqueous solution containing hydrogen peroxide in a weight ratio of stabilizer to peroxide compound ranging from 1:140 to 1:70000. 4. One of the above-mentioned claims' characteristic processes involves the use of stabilizers in combination with co-stabilizers selected from organic acids containing numerous functional groups, which may be carboxylic and/or sulfuric acid groups, or hydroxyl groups, or amino groups. 5. The process described in claim 4 is characterized by a co-stabilizer containing aliphatic or aromatic hydroxycarboxylic acid. 6. The process under claim 5, which is characterized by the use of a co-stabilizer, is citric acid or para-hydroxybenzoic acid. 7. One of the above-mentioned claims has a specific characteristic: the use of this stabilizer in conjunction with a phosphate-derived co-stabilizer. 8. Any one of the processes under claims 4 through 7 above is characterized by the use of a co-stabilizer with a stabilizer in a weight ratio of co-stabilizer to stabilizer of approximately 1:1. 9. Any one of the above-mentioned claims has a specific characteristic: the use of a stabilizer in combination with a nitrate or stainate, or both. 10. Stabilizing a highly acidic aqueous hydrogen peroxide solution by adding a compound with the following formula in an effective amount (chemical formula): where X represents a methylenephosphonic acid group with the formula -CH2-(PO3H2) or its salt; R represents tetramethylenediradicol, which may be selectively alkyl-sulfated, thus completing the cyclo-aliphatic ring and thus forming two NX2 groups in a definite structure; and Y represents hydrogen or a lower alkyl group. 11. The ingredients are as described in Claim 10 and have additional characteristics as described in any one of Claims 2 through 9 previously referred to.