Record Information
Creation date2010-04-08 22:11:49 UTC
Update date2019-11-26 03:11:33 UTC
Primary IDFDB015407
Secondary Accession NumbersNot Available
Chemical Information
FooDB NamePotassium persulfate (K2S2O8)
DescriptionPotassium persulfate (K2S2O8), also known as potassium peroxodisulfate, belongs to the class of inorganic compounds known as alkali metal peroxodisulfates. These are inorganic compounds in which the largest oxoanion is peroxodisulfate, and in which the heaviest atom not in an oxoanion is an alkali metal. Potassium persulfate (K2S2O8) is an extremely strong acidic compound (based on its pKa). Potassium persulfate (K2S2O8) has been detected, but not quantified in, citrus. This could make potassium persulfate (K2S2O8) a potential biomarker for the consumption of these foods.
CAS Number7727-21-1
Potassium persulfuric acid (K2S2O8)Generator
Potassium persulphate (K2S2O8)Generator
Potassium persulphuric acid (K2S2O8)Generator
Potassium peroxodisulfateMeSH
Potassium monopersulfateMeSH
Potassium peroxydisulfateMeSH
Dipotassium [(sulfonatoperoxy)sulfonyl]oxidanidebiospider
Dipotassium peroxodisulphatebiospider
Dipotassium peroxydisulfatebiospider
Dipotassium persulfatebiospider
Peroxydisulfuric acid (((HO)S(O)2)2O2) , dipotassium saltbiospider
Peroxydisulfuric acid (((HO)S(O)2)2O2), dipotassium saltbiospider
Peroxydisulfuric acid, dipotassium saltbiospider
Peroxydisulfuric(VI) acid, dipotassium salt, 8CIdb_source
Potassium peroxodisulfate(VI)db_source
Potassium peroxydisulfate (K2(S2O8))biospider
Potassium peroxydisulphatebiospider
Potassium persulfatebiospider
Potassium persulfate [UN1492] [Oxidizer]biospider
Predicted Properties
pKa (Strongest Acidic)-3.5ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area132.86 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity22.87 m³·mol⁻¹ChemAxon
Polarizability11.73 ųChemAxon
Number of Rings0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Chemical FormulaK2O8S2
IUPAC namedipotassium O-[(sulfonatoperoxy)sulfonyl]oxidanidolate
InChI IdentifierInChI=1S/2K.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2
Isomeric SMILES[K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O
Average Molecular Weight270.322
Monoisotopic Molecular Weight269.830872078
Description belongs to the class of inorganic compounds known as alkali metal peroxodisulfates. These are inorganic compounds in which the largest oxoanion is peroxodisulfate, and in which the heaviest atom not in an oxoanion is an alkali metal.
KingdomInorganic compounds
Super ClassMixed metal/non-metal compounds
ClassAlkali metal oxoanionic compounds
Sub ClassAlkali metal peroxodisulfates
Direct ParentAlkali metal peroxodisulfates
Alternative Parents
  • Alkali metal peroxodisulfate
  • Inorganic oxide
  • Inorganic salt
Molecular FrameworkNot Available
External DescriptorsNot Available
OntologyNo ontology term
Physico-Chemical Properties - Experimental
Physico-Chemical Properties - Experimental
Physical stateNot Available
Physical DescriptionNot Available
Mass CompositionK 28.93%; O 47.35%; S 23.72%DFC
Melting PointNot Available
Boiling PointNot Available
Experimental Water SolubilityNot Available
Experimental logPNot Available
Experimental pKaNot Available
Isoelectric pointNot Available
ChargeNot Available
Optical RotationNot Available
Spectroscopic UV DataNot Available
DensityNot Available
Refractive IndexNot Available
Spectrum TypeDescriptionSplash KeyView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-00di-0090000000-32c36f0af07f5725b015JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00di-0390000000-33e3cfabee7b22152e8eJSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-01b9-4950000000-2ece9c4cf2918bd62d70JSpectraViewer
ChemSpider IDNot Available
ChEMBL IDNot Available
KEGG Compound IDNot Available
Pubchem Compound ID24412
Pubchem Substance IDNot Available
ChEBI IDNot Available
Phenol-Explorer IDNot Available
DrugBank IDNot Available
HMDB IDNot Available
CRC / DFC (Dictionary of Food Compounds) IDKBX32-G:KBX32-G
Dr. Duke IDNot Available
BIGG IDNot Available
KNApSAcK IDNot Available
HET IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
Flavornet IDNot Available
GoodScent IDNot Available
SuperScent IDNot Available
Wikipedia IDNot Available
Phenol-Explorer Metabolite IDNot Available
Duplicate IDSNot Available
Old DFC IDSNot Available
Associated Foods
FoodContent Range AverageReference
Biological Effects and Interactions
Health Effects / BioactivitiesNot Available
EnzymesNot Available
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
MSDSNot Available
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference