Peroxymonosulfuric acid compounds

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... 

Finally, a number of commonly occurring atmospheric trace species are converted to reactive electrophiles in concentrated sulfuric acid solutions. For example, nitric acid is converted to NO2, which is a potent nitrating agent for aromatic compounds (Liler 1971), and hydrogen peroxide can be converted to peroxymonosulfuric acid (HOOSO2OH), which is a strong oxidant (Mozurkewich 1995 Dalleska et al. 2000). 

Peroxymonosulfuric acid is a strong irritant to the skin, eyes, and mucous membranes (Merck 1989). Toxicity data for this compound are not available. 

Peroxymonosulfuric acid is highly unstable, decomposes dangerously on heating, and evolves oxygen at room temperamre. It may react violently with organic matter and readily oxidizable compounds. Violent explosions have been reported with acetone, due to the formation of acetone peroxide (Toennis 1937). It may explode when mixed with many primary and secondary alcohols, manganese dioxide, cotton, many metals in finely divided form, and aromatics such as benzene, phenol, and aniline. 

Related compounds Peroxymonosulfuric acid Sulfur trioxide Oleum... 

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