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Potassium persulfate

Potassium persulfate

General
Other names	potassium peroxydisulfate
Molecular formula	K₂S₂O₈
Molar mass	270.32 g/mol
Appearance	white powder
CAS number	[7727-21-1]
SMILES	[K+].[O-]S(=O)(=O)OOS(=O)(=O)[O-].[K+]
Properties
Density and phase	2.48 g/cm³, solid
Solubility in water	4.7g/100g water
Melting point	100°C (decomposes)
Boiling point	?
Vapor density	9.30
Hazards
EU classification	not listed
NFPA 704	0 1 0 OX
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Potassium persulfate (K₂ S₂ O₈) is a chemical compound. It is a food additive and it is used in organic chemistry as an oxidizing agent for instance in the Elbs persulfate oxidation

Additional recommended knowledge

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Conditions/substances to avoid are: heat, flames, ignition sources, powdered metals, phosphorus, hydrides, organic matter, halogens, acids and alkalis.

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E numbers

Colours (E100–199) • Preservatives (E200–299) • Antioxidants & Acidity regulators (E300–399) • Thickeners, stabilisers & emulsifiers (E400–499) • pH regulators & anti-caking agents (E500–599) • Flavour enhancers (E600–699) • Miscellaneous (E900–999) • Additional chemicals (E1100–1599)

Waxes (E900–909) • Synthetic glazes (E910–919) • Improving agents (E920–929) • Packaging gases (E930–949) • Sweeteners (E950–969) • Foaming agents (E990–999)

L-cysteine (E920) • L-cystine (E921) • Potassium persulfate (E922) • Ammonium persulfate (E923) • Potassium bromate (E924) • Chlorine (E925) • Chlorine dioxide (E926) • Azodicarbonamide (E927) • Carbamide (E927b) • Benzoyl peroxide (E928)

Categories: Persulfates | Potassium compounds