| 词条 | Peroxymonosulfuric acid |
| 释义 |
| Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 464199379 | Name = Peroxymonosulfuric acid | ImageFile = Peroxomonoschwefelsäure.svg | ImageFile_Ref = {{chemboximage|correct|??}} | ImageName = Skeletal formula of peroxymonosulfuric acid | ImageFile1 = Caro's-acid-3D-balls.png | ImageFile1_Ref = {{chemboximage|correct|??}} | ImageName1 = Ball and stick model of peroxymonosulfuric acid | IUPACNames = Peroxysulfuric acid Sulfuroperoxoic acid[1] | SystematicName = (Dioxidanido)hydroxidodioxidosulfur[1][2] | OtherNames = Peroxosulfuric acid[1] Peroxomonosulfuric acid{{Citation needed|date = November 2011}} Persulfuric acid{{Citation needed|date = November 2011}} |Section1={{Chembox Identifiers | CASNo = 10361-76-9 | CASNo_Ref = {{cascite|changed|??}} | PubChem = 2754594 | ChemSpiderID = 2035480 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | EINECS = 231-766-6 | UNNumber = 1483 | ChEBI = 29286 | ChEBI_Ref = {{ebicite|correct|EBI}} | Gmelin = 101039 | SMILES = OOS(O)(=O)=O | SMILES1 = [O].[O].OOSO | StdInChI = 1S/H2O5S/c1-5-6(2,3)4/h1H,(H,2,3,4) | StdInChI_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = FHHJDRFHHWUPDG-UHFFFAOYSA-N | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} }} |Section2={{Chembox Properties | Formula = {{Chem|H|2|SO|5}} | MolarMass = 114.078 g mol−1 | Appearance = White crystals | Density = 2.239 g cm−3 | ConjugateBase = Peroxomonosulfate }} |Section3={{Chembox Structure | Coordination = Tetrahedral at S }} |Section4={{Chembox Hazards | MainHazards = strong oxidizer }} }} Peroxymonosulfuric acid, (H2SO5), also known as persulfuric acid, peroxysulfuric acid, or Caro's acid, has a melting point of 45 degree celcius. 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. It is one of the strongest oxidants known (E0 = +2.51 V) and is highly explosive. 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. HistoryH2SO5 was first described in 1898 by Heinrich Caro, after whom it is named.[3] Synthesis and productionThe laboratory scale preparation of Caro's acid involves the combination of chlorosulfuric acid and hydrogen peroxide. H2O2 + ClSO2OH ⇌ H2SO5 + HCl [4] Published patents include more than one reaction for preparation of Caro's acid, usually as an intermediate for the production of potassium monopersulfate (PMPS), a bleaching and oxidizing agent. One patent for production of Caro's acid for this purpose gives the following reaction: H2O2 + H2SO4 ⇌ H2SO5 + H2O [5] Uses in industryH2SO5 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.[6] Ammonium, sodium, and potassium salts of H2SO5 are used in the plastic industry as polymerization initiators, etchants, desizing agents, soil conditioner, and for decolorizing and deodorizing oils. Potassium peroxymonosulfate, KHSO5, is the potassium acid salt of peroxymonosulfuric acid. It is widely used as an oxidizing agent. HazardsPure Caro's acid is highly explosive. Explosions have been reported at Brown University[7] and Sun Oil. 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 acetone peroxide. See also
References1. ^1 2 {{RedBookRef|page=139}} {{Hydrogen compounds}}{{sulfur compounds}}{{DEFAULTSORT:Peroxymonosulfuric Acid}}2. ^{{Cite web|title = peroxysulfuric acid (CHEBI:29286)|url = http://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:29286|work = Chemical Entities of Biological Interest|publisher = European Bioinformatics Institute|accessdate = 17 November 2011|location = UK|date = 20 November 2007}} 3. ^{{cite journal |first=H. |last=Caro |year=1898 |title=Zur Kenntniss der Oxydation aromatischer Amine |trans-title=[Contribution] to [our] knowledge of the oxidation of aromatic amines |journal=Zeitschrift für angewandte Chemie |volume=11 |issue=36 |pages=845–846 |url=http://babel.hathitrust.org/cgi/pt?id=mdp.39015073166319;view=1up;seq=855 |doi=10.1002/ange.18980113602 }} 4. ^{{Cite web |url=http://www.prepchem.com/synthesis-caros-acid/ |title=Synthesis of Caro's acid |date=2017-02-13 |website=PrepChem.com |language=en-US |access-date=2018-10-12}} 5. ^{{Citation |title=A method and apparatus for producing a peroxyacid solution |url=https://patents.google.com/patent/WO2005016511A1/da |access-date=2018-10-12}} 6. ^{{cite journal |title=Treatment of softwood kraft pulps with peroxymonosulfate before oxygen delignification |last=Springer |first=E. L. |last2=McSweeny |first2=J. D. |journal=Tappi Journal |year=1993 |volume=76 |issue=8 |pages=194–199 |doi= |url=http://www.tappi.org/Bookstore/Technical-Papers/Journal-Articles/TAPPI-JOURNAL/Archives/1993/August/Treatment-of-softwood-kraft-pulps-with-peroxymonosulfate-before-oxygen-delignification-TAPPI-JOURNA.aspx |issn=0734-1415 }} 7. ^{{cite journal | author = J.O. Edwards | journal = Chem. Eng. News | volume = 33 | pages = 3336 | year = 1955 | doi = 10.1021/cen-v033n032.p3336 | title = SAFETY | issue = 32}} 5 : Hydrogen compounds|Sulfur oxoacids|Persulfates|Peroxy acids|Oxidizing agents |
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