Peroxymonosulfuric acid

Peroxymonosulfuric acid
Names
	IUPAC names Peroxysulfuric acid; Sulfuroperoxoic acid
	Systematic IUPAC name (Dioxidanido)hydroxidodioxidosulfur
	Other names Peroxosulfuric acid; Peroxomonosulfuric acid[citation needed]; Persulfuric acid[citation needed]; Caro's acid
Identifiers
CAS Number	7722-86-3 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEBI	CHEBI:29286 ;
ChemSpider	2035480 ;
ECHA InfoCard	100.028.879
EC Number	231-766-6;
Gmelin Reference	101039
PubChem CID	2754594;
UNII	JC6U8R2UJ9 ;
UN number	1483
CompTox Dashboard (EPA)	DTXSID90884417 ;
	InChI InChI=1S/H2O5S/c1-5-6(2,3)4/h1H,(H,2,3,4) Key: FHHJDRFHHWUPDG-UHFFFAOYSA-N ;
	SMILES OOS(O)(=O)=O; [O].[O].OOSO;
Properties
Chemical formula	H; 2SO; 5
Molar mass	114.078 g mol−1
Appearance	White crystals
Density	2.239 g cm−3
Melting point	45 °C
Acidity (pKa)	1, 9.3
Conjugate base	Peroxomonosulfate
Structure
Coordination geometry	Tetrahedral at S
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	strong oxidizer
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Peroxymonosulfuric acid, H
₂SO
₅, is also known as persulfuric acid, peroxysulfuric acid, or Caro's acid. 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.

H
₂SO
₅ is sometimes confused with H
₂S
₂O
₈, 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.

^ ^a ^b ^c International Union of Pure and Applied Chemistry (2005). Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005). Cambridge (UK): RSC–IUPAC. ISBN 0-85404-438-8. p. 139. Electronic version.
^ "Peroxysulfuric acid (CHEBI:29286)". Chemical Entities of Biological Interest. UK: European Bioinformatics Institute. 20 November 2007. Retrieved 17 November 2011.
^ Perrin, D. D., ed. (1982) [1969]. Ionisation Constants of Inorganic Acids and Bases in Aqueous Solution. IUPAC Chemical Data (2nd ed.). Oxford: Pergamon (published 1984). Entry 176. ISBN 0-08-029214-3. LCCN 82-16524.

[redbookname-1] International Union of Pure and Applied Chemistry (2005). Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005). Cambridge (UK): RSC–IUPAC. ISBN 0-85404-438-8. p. 139. Electronic version.

[2] "Peroxysulfuric acid (CHEBI:29286)". Chemical Entities of Biological Interest. UK: European Bioinformatics Institute. 20 November 2007. Retrieved 17 November 2011.

[P82db-3] Perrin, D. D., ed. (1982) [1969]. Ionisation Constants of Inorganic Acids and Bases in Aqueous Solution. IUPAC Chemical Data (2nd ed.). Oxford: Pergamon (published 1984). Entry 176. ISBN 0-08-029214-3. LCCN 82-16524.

[1]

[2]

[3]

Names


IUPAC names Peroxysulfuric acid Sulfuroperoxoic acid^[1]
Systematic IUPAC name (Dioxidanido)hydroxidodioxidosulfur^[1]^[2]
Other names Peroxosulfuric acid^[1] Peroxomonosulfuric acid^{[citation needed]} Persulfuric acid^{[citation needed]} Caro's acid
Identifiers
CAS Number	7722-86-3^N
3D model (JSmol)	Interactive image Interactive image
ChEBI	CHEBI:29286^Y
ChemSpider	2035480^Y
ECHA InfoCard	100.028.879
EC Number	231-766-6
Gmelin Reference	101039
PubChem CID	2754594
UNII	JC6U8R2UJ9^Y
UN number	1483
CompTox Dashboard (EPA)	DTXSID90884417
InChI InChI=1S/H2O5S/c1-5-6(2,3)4/h1H,(H,2,3,4)^Y Key: FHHJDRFHHWUPDG-UHFFFAOYSA-N^Y
SMILES OOS(O)(=O)=O [O].[O].OOSO
Properties
Chemical formula	H ₂SO ₅
Molar mass	114.078 g mol⁻¹
Appearance	White crystals
Density	2.239 g cm⁻³
Melting point	45 °C
Acidity (pK_a)	1, 9.3^[3]
Conjugate base	Peroxomonosulfate
Structure
Coordination geometry	Tetrahedral at S
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	strong oxidizer
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references