Potassium peroxydisulfate

Potassium peroxydisulfate (potassium persulfate) [7727-21-1] M 270.3. Crystd twice from distilled water (lOmL/g) and dried at 50° in a vacuum desiccator. 

Recently, Smigol et al. [75] extensively studied emulsifier-free emulsion polymerization of different monomers including styrene, methyl methacrylate, and glycidyl methacrylate in an aqueous medium by using potassium peroxydisulfate as the initiator. In this study. 

Potassium peroxomonosulfate, 14 67 Potassium peroxydisulfate, 14 292 Potassium peroxymonosulfate, 26 189 Potassium persulfate, 7 856 Potassium phosphates, 18 834-835 20 637 manufacture of, 18 854 Potassium polymetaphosphate, 18 848 Potassium products, 20 5991 Potassium pyrophosphates, 18 843 Potassium residues, 20 603 Potassium salts, 20 609... 

Synonyms potassium peroxydisulfate potassium perdisulfate peroxydisulfu-ric acid dipotassium salt Anthion (in photography)... 

Preparative methods based on oxidations by peroxydisulfate have long been known. Peroxydisulfate ions are capable of oxidizing virtually all functional groups, even hydrocarbons. The oxidation of phenol using potassium peroxydisulfate in alkaline solution, to yield a 1,2- or 1,4-dihydroxybenzene, is called the Elbs reaction and it had been already reported in 1893 (equation 12) . 

Isatin, a cyclic a-ketoamide, when reacted with potassium peroxydisulfate in the presence of sulfuric acid gave regioselectively an oxidized product, i.e. 2,3-dioxo-l,4-benzoxazine in almost quantitative yield under mUd conditions (equation 16). In contrast, when isatin reacted with 30% H2O2 in the presence of acetic acid and H2SO4, isatoic anhydride was obtained (equation 16) . ... 

Recently, Perumal and coworkers reported aromatization of NAD(P)H model Hantzch 1,4-dihydropyridnes using potassium peroxydisulfate/Co(II) . ... 

When 2,5-diphenylfuran was treated with potassium peroxydisulfate, 4-methylquinoline was obtained in quantitative yield. Peroxydisulfate was also found to be a very efficient reagent for the conversion of thiols to disulfides. Sulfides can be selectively converted into the corresponding sulfoxides in the presence of potassium peroxydisulfate in acetic acid. ... 

Peroxydisulfate was also reported as a reagent in nucleoside chemistry. Interestingly, the etheno bridge of l,V -ethenoadenosine can be smoothly removed by treatment with potassium peroxydisulfate (equation 20). ... 

It has been proved that the benzyne intermediate can be easily prepared from o-iodobenzoic acid and potassium peroxydisulfate in sulfuric acid. Water-soluble vicinal diols are converted into their corresponding aldehydes in the presence of Ag(I) catalyst. ... 

The first Ag(II) compound to be isolated in the solid state was tetra-kis(pyridine)silver(2 +) peroxydisulfate.13,14 Its stability can be attributed to its insolubility, the coordination of the Ag(II) ion, and the presence of an anion with an element in a high oxidation state. It can be prepared conveniently, rapidly, and in high yield by reaction of a solution containing silver nitrate and pyridine with a solution of potassium peroxydisulfate. The corresponding, but less stable, nitrate can be prepared by the electrolytic oxidation of silver nitrate in concentrated aqueous pyridine.15... 

Twenty grams (0.074 mol) of potassium peroxydisulfate is dissolved in 1800 mL of ice-cold water contained in a 3-L beaker. Eight milliliters of pyridine (0.1 mol) is added to a solution of 2.00 g (0.0118 mol) of silver nitrate in 40 mL of water, and the resulting solution is slowly added with stirring to the potassium peroxydisulfate solution. 

PEROXIDES AND PEROXIDE COMPOUNDS - INORGANIC PEROXIDES] (Vol 18) Potassium peroxydisulfate [7727-21-2]... 

Monofluorinated hydroquinone and quinone are obtained by stepwise oxidation of 2-fluorophenol(l) using different oxidation agents.167 In the first stage, potassium peroxydisulfate is applied and the resulting hydroquinone 2 is further oxidized to 3 by ammonium cerium(IV) nitrate.167... 

Delgado-Morales, W., Zingaro, R.A. and Mohan, M.S. (1994) Analysis and removal of arsenic from natural-gas using potassium peroxydisulfate and polysulfide absorbents. International Journal of Environmental Analytical Chemistry, 54(3), 203-20. 

Results with Silver Composition in Water with 10 ppm K2S2Os. For Salmonella, for the lower initial bacteria level (104), the following log reductions were recorded 0.26 at 0 minutes, 0.28 at 20 minutes, 0.35 at 60 minutes, and 0.58 at 240 minutes. For the higher initial bacteria level (106), the following log reductions were recorded 0.03 at 0 minutes, 0.16 at 20 minutes, 0.21 at 60 minutes and 0.36 at 240 minutes. The results indicate that the 10 ppm silver with 10 ppm potassium peroxydisulfate (K2S2Os) embodiment of this invention provides an effective bactericidal effect for Salmonella on beef steak. 

Silver (II) oxide has been made by the hydrolytic action of boiling water on a substance of the approximate formula Ag708N03, a material which is obtained by the electrolytic oxidation of silver(I) nitrate solutions.1-4 A more rapid and convenient process for the preparation of this oxide involves the oxidation of silver (I) nitrate by means of potassium peroxydisulfate in an alkaline medium.5,6... 

Seventy-two grams of sodium hydroxide (1.8 mols) in pellet form is added portionwise, with constant stirring, to 1 1. of water, which is maintained at approximately 85°. Seventy-five grams of potassium peroxydisulfate (0.28 mol) in the form of an aqueous slurry is added to the hot alkaline solution this is followed by the addition of 51 g. of silver(I) nitrate (0.30 mol) dissolved in a minimum amount of water. The temperature of the resulting mixture is raised to 90°, and stirring is continued for approximately 15 minutes. 

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