Peroxymonosulfuric acid

Sulfuric acid, H2SO4, the most important commercial sulfur compound (see Sulfuric acid and sulfur trioxide), and peroxymonosulfuric acid [7722-86-3] (Caro s acid), H2SO, are discussed elsewhere (see Peroxides and peroxide compounds, inorganic). The lower valent sulfur acids are not stable species at ordinary temperatures. Dithionous acid [15959-26-9] H2S2O4, sulfoxyHc acid [20196-46-7] H2SO2, and thiosulfuric acid [13686-28-7] H2S2O2 are unstable species. A discussion of efforts to isolate and characterize the unstable sulfur acids is given (330). 

Peracids. Peracids are compounds containing the functional group —OOH derived from an organic or inorganic acid functionaHty. Typical stmctures include CH2C(0)OOH derived from acetic acid and H0S(0)200H (peroxymonosulfuric acid) derived from sulfuric acid. Peracids have... 

Peroxymonosulfuric acid (historically known as Caro s acid), H2S05, results when peroxydisulfuric acid reacts with a limited amount of water,... 

Oxone Peroxymonosulfuric acid, monopotassium salt, mixt. with dipotassium sulfate and potassium hydrogen sulfate (9) (37222-66-5)... 

The displacement of alkoxy groups from polynitroarylenes has been used for the indirect synthesis of some highly nitrated polynitroarylenes. Holleman synthesized 2,3,4,6-tetranitrotoluene (57) by treating 3-methoxy-2,4,6-trinitrotoluene (132) with ammonia in methanol, followed by oxidation of the resulting product (56) with peroxymonosulfuric acid. 

Synonyms peroxymonosulfuric acid persulfuric acid sulfomonoperacid... 

The peroxyacids containing —O-OH groups, are formed with all the transition elements in groups 4, 5, 6 of the periodic tabic, with main group elements 4 and 5 as well as elements of atomic numbers from boron to sulfur, inclusive. Representative peroxyacids are peroxymonosulfuric acid,... 

Oxone Peroxymonosulfuric acid, monopotassium salt, mixt. with dipotassium sulfate and potassium hydrogen sulfate (37222-66-5), 69, 160, 229 Oxonium, trimethyl-, tetrafluoroborate (1-), 65,140 (1-OXO-2-PROPENYL)TRIMETHYLSILANE, 66,14-16,18 3-(1-Oxopropyl)-4-(S)-phenylmethyl-2-oxazolidinone 2-Oxazolidinone, 3-(1-oxopropyl)-4-(phenylmethyl)-, (S)- (101711-78-8), 68, 83 Ozone (10028-15-6), 65, 183... 

Tail gas emissions are controlled by improving the S02 conversion efficiency and by scrubbing the tail gas. In a double absorption process plant, a five-bed converter has 0.3 percent unconverted S02, as compared with 0.5 percent for a four-bed converter. A Lurgi Peracidox scrubber may be used to remove up to 90 percent of the residual S02 in the tail gas from a double absorption plant. Hydrogen peroxide or electrolytically produced peroxymonosulfuric acid is used to convert the S02 to H2S04 in the Lurgi scrubber. 

Peroxymonosulfuric acid, H2S205, is obtained by the partial hydrolysis of H2S208 ... 

Peroxymonosulfuric acid, sometimes called Caro s acid, and its salts are of much less importance than the peroxydisulfates. Although polythionic acids having the general formula H2S 06 and salts of those acids are known, they are of little importance and will not be discussed further. 

Peroxymonosulfuric acid (Caro s acid, H2S05) and its salts may be used to oxidize aldehydes. Although early results were poor compared with the use of organic peracids, good yields of esters have been obtained when reactions are carried out in the presence of alcohols.225 Unsaturated and aromatic aldehydes undergo analogous reactions. It is believed that hemiacetal formation occurs in these reactions, and that it is this species which is oxidized, rather than the aldehyde. 

Combustible when exposed to heat, flame, or oxidizers. Potentially explosive reaction with aluminum chloride + nitromethane (at 110°C/100 bar), formaldehyde, peroxydisulfuric acid, peroxymonosulfuric acid, sodium nitrite + heat. Violent reaction with aluminum chloride + nitrobenzene (at... 

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