Oxidizing agents sodium perborate

Neutralizing Lotion. The principal active ingredient of cold wave neutralizers is usually an oxidizing agent. The most popular is hydrogen peroxide [7722-84-1J, employed at a concentration of 1—2% it continues to find widespread use. Aqueous solutions of sodium bromate [7789-38-0] at a concentration of 10—20% occasionally are used and are technically preferred over the peroxide formulations because of excellent stabiUty and absence of hair bleaching. Neutralizing powders appear to be on the decline but formulations stiU in use consist of sodium perborate [7632-04-4] combined with hexametaphosphates to improve solubiUty in hard water. 

In a related reaction, primary aromatic amines have been oxidized to azo compounds by a variety of oxidizing agents, among them Mn02, lead tetraacetate, O2 and a base, barium permanganate, and sodium perborate in acetic acid, tert Butyl hydroperoxide has been used to oxidize certain primary amines to azoxy compounds. 

Many other peroxy compounds can analogously be produced in the region of HAP for instance, sodium perborate Na2(B03)2 (from sodium metaborate NaB02) and peroxycarbonates. These compounds are used as stable oxidizing and bleaching agents. 

Sodium perborate (1,000) - Oxidizing bleaching agent, washing and sterilizing agent... 

Dimethyldioxirane in wet acetone oxidizes isocyanates to nitro compounds (RNCO —> RN02). Oximes can be oxidized to nitro compounds with peroxytri-fluoroacetic acid, or Oxone , sodium perborate, among other ways. Secondary hydroxylamines are also oxidized to nitrones with Mn02 in dichloromethane. " Primary and secondary alkyl azides have been converted to nitro compounds by treatment with PhsP followed by ozone.Aromatic nitroso compounds are easily oxidized to nitro compounds by many oxidizing agents. OS III, 334 V, 367, 845 VI, 803 81, 204. 

Oxidizing agents such as sodium perborate and sodium percarbonate have also been used in cleaning contact lenses. None of these products are currently marketed for that purpose in the United States. Products marketed earlier were withdrawn because of their deleterious effects on lens polymers. 

Practically all leuco compounds of vat dyes will oxidize on exposure to air but the reaction often takes 30 to 45 minutes to complete. When the goods are in an open state and air has access to every part, atmospheric oxidation does not present much difficulty. When the material is in a dense mass such as a tightly-wound roll or a cheese or cone of yarn, the penetration of air to the innermost portions may be slow and in such cases treatment with an oxidizing agent is of assistance. The goods can be rinsed with cold water and then treated for 10 to 20 minutes at 30° to 40°C (86° to 104°F) in a liquor containing 1 to 2 parts per 1000 of potassium dichromate and 2 5 to 10 parts of 30 per cent acetic acid. More frequently the oxidation is carried out at 40° to 50°C (104° to 122°F) in a solution containing 3 parts of sodium percarbonate or 2 parts of sodium perborate per 1000, followed by a rinse and treatment with dilute acetic acid (6 to 10 parts of 30 per cent acid per 1000) to neutralize the alkali derived from the per-salt. 

Several other oxidizing agents can be made from hydrogen peroxide and thus be derived indirectly from oxygen. These include sodium perborate, sodium percarbonate, urea peroxide, peracids, potassium peroxymonosulfate, amine oxides, dioxiranes, and iodosobenzene (4.24). 

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