- Peroxymonosulfuric acid
Name = Peroxymonosulfuric acid
ImageFile = Peroxymonosulfuric acid.svg
ImageFile1 = Caro's-acid-3D-balls.png
ImageName1 = Ball-and-stick model of peroxymonosulfuric acid
OtherNames = persulfuric acid, peroxysulfuric acid,
Section1 = Chembox Identifiers
CASNo = 7722-86-3
Section2 = Chembox Properties
Formula = H2SO5
MolarMass = 114.04 g/mol
Appearance = white solid
Density = ??? g/cm3, solid
Solubility = soluble
MeltingPt = 45 °C
BoilingPt = decomposes
Section3 = Chembox Structure
Coordination = tetrahedral
Dipole = ?
Section7 = Chembox Hazards
MainHazards = strong oxidizer
Peroxymonosulfuric acid, also known as persulfuric acid, peroxysulfuric acid, or as Caro's acid, is H2SO5, a colorless solid melting at 45 °C. In this
acid, the S(VI) center adopts its characteristic tetrahedral geometry; the connectivity is indicated by the formula HO-O-S(O)2-OH.
H2SO5 is sometimes confused with H2S2O8, known as
peroxydisulfuric acid. The disulfuric acid, which appears to be more widely used as its alkali metal salts, has the structure HO-S(O)2-O-O-S(O)2-OH.
H2SO5 was first described by
Heinrich Caro, for whom it is named.
ynthesis and production
The laboratory scale preparation of Caro's acid involve the combination of
chlorosulfuric acidand hydrogen peroxide.
::H2O2 + ClSO2OH unicode|⇌ H2SO5 + HCl
Large scale production of Caro's acid is usually done on site, due to its instability. According to the patent by Martin, Caro's acid is produced by reacting >85%
sulfuric acidand >50% hydrogen peroxide (" Piranha solution").
::H2O2 + H2SO4 unicode|⇌ H2SO5 + H2O
Uses in industry
H2SO5 has been used for a variety of disinfectant and cleaning applications, e.g., swimming pool treatment and denture cleaning. Alkali metal salts of H2SO5 show promise for the delignification of wood.
Ammonium, sodium, and potassiumsalts of H2SO5 are used in the plastics industry as polymerizationinitiators, etchants, desizing agents, soil conditioner, and for decolorizing and deodorizing oils. Potassium peroxymonosulfate, KHSO5, is the potassium acid saltof peroxymonosulfuric acid. It is widely used as an oxidizing agent.
As with all strong oxidizing agents, peroxysulfuric acid should be kept away from organic compounds such as ethers and ketones because of its ability to peroxidize the compound, creating a highly unstable molecule such as
*Martin, P. L. (USA). U.S. Pat. Appl. Publ. (2005), 21 pp. CODEN: USXXCO US 2005031530 A1 20050210 Patent written in English. Application: US 2004-878176 20040628. Priority: US 2003-494009 20030807. CAN 142:179838 AN 2005:122569 CAPLUS
*"Treatment of Softwood Kraft Pulps with Peroxymonosulfate Before Oxygen Delignification. Springer, E. L.; McSweeny, J. D. Tappi Journal (1993), 76, 194-9.
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peroxymonosulfuric acid — pəˌräksēˌmänō, mōnō+... noun Etymology: peroxy + mon + sulfuric : permonosulfuric acid * * * /peuh rok see mon oh sul fyoor ik, rok see mon /, Chem. See persulfuric acid (def. 1). [PEROXY + MONO + SULFURIC ACID] … Useful english dictionary
peroxymonosulfuric acid — /peuh rok see mon oh sul fyoor ik, rok see mon /, Chem. See persulfuric acid (def. 1). [PEROXY + MONO + SULFURIC ACID] * * * … Universalium
peroxymonosulfuric acid — per·oxy·mono·sul·fu·ric acid .män ō .səl .fyu̇r ik n PERMONOSULFURIC ACID … Medical dictionary
Peroxydisulfuric acid — Peroxydisulfuric acid … Wikipedia
persulfuric acid — H2SO5; peroxymonosulfuric acid; an oxidizing agent. * * * per·sul·fu·ric acid (.)pər .səl .fyu̇r ik n either of two peroxy acids of sulfur: a) a crystalline strongly oxidizing acid H2S2O8 b) PERMONOSULFURIC ACID * * * per·sul·fur·ic ac·id… … Medical dictionary
Sulfuric acid — Sulfuric acid … Wikipedia
persulfuric acid — |pər, |per+... noun Etymology: International Scientific Vocabulary per + sulfuric; probably originally formed as French persulphurique : either of two peroxy acids of sulfur: a. : a crystalline strongly oxidizing acid H2S2O8 obtained usually by… … Useful english dictionary
permonosulfuric acid — ˌpərˌmänō, mō+... noun Etymology: per + mon + sulfuric : an unstable crystalline strong monobasic acid H2SO5 obtained by acid hydrolysis of persulfates or by the action of hydrogen peroxide on chlorosulfonic acid or sulfuric acid called also Caro … Useful english dictionary
persulfuric acid — /perr sul fyoor ik, perr /, Chem. 1. Also called Caro s acid, permonosulfuric acid, peroxymonosulfuric acid, peroxysulfuric acid. a white, crystalline solid, H2SO5, used as an oxidizing agent for certain organic compounds. 2. Also called… … Universalium
peroxymonosulphuric acid — /pəˌrɒksiˌmɒnoʊsʌlˌfjurɪk ˈæsəd/ (say puh.roksee.monohsul.fyoohrik asuhd) noun Chemistry → persulphuric acid (def. 1). Also, peroxymonosulfuric acid … Australian English dictionary