Hydrogen peroxide is an excellent oxidizing bleaching agent. When using hydrogen peroxide for bleaching, it is generally necessary to add a certain amount of stabilizer to reduce the decomposition of hydrogen peroxide.
Hydrogen peroxide stabilizers are generally categorized into adsorption-type and complexation-type stabilizers. Adsorption-type hydrogen peroxide stabilizers are mostly inorganic compounds or high-molecular organic substances, which are colloidal under certain conditions and exhibit strong adsorption on metal ions. This inhibits the catalytic decomposition of hydrogen peroxide by heavy metal ions, thereby providing stability. In contrast, complexation-type hydrogen peroxide stabilizers are primarily organic acid multivalent complexing agents that can form stable water-soluble complexes with metal ions, preventing the catalytic action of heavy metal ions.
Common dehydrogen peroxide adsorption-type stabilizers include silicates and adsorption-type ionic compounds.
Common chelating stabilizers include sodium tripolyphosphate, sodium ethylenediaminetetraacetate, sodium diethylenetriaminepentaacetate, etc., as well as those based on trimethylenephosphonate and sodium ethylenediaminetetramethylene phosphonate.linSodium Hexametaphosphate, Diethylenetriamine PentaacetatelinCitric acid, gluconic acid, malic acid, etc.
There's also a mixed peroxide stabilizer, which is a peroxide oxidizing agent that possesses both adsorption and complexing properties. This peroxide stabilizer combines the advantages of both adsorption-type and complexing-type peroxide stabilizers.
In addition to water glass, common stabilizers used in hydrogen peroxide bleaching baths include phosphates such as disodium hydrogen phosphate, trisodium phosphate, sodium phosphoric anhydride, and sodium hexametaphosphate. These stabilizers for hydrogen peroxide bleaching baths are characterized by their ability to overcome the drawback of scale formation that is common with water glass as a stabilizer. However, these stabilizers are more expensive, and they do not match water glass in terms of fabric brightness, permeability, and cottonseed hull removal capabilities.
