Potassium persulfate

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Potassium persulfate

Other names	potassium peroxydisulfate
Identifiers
CAS number	[7727-21-1]
Properties
Molecular formula	K₂S₂O₈
Molar mass	270.32 g/mol
Appearance	white powder
Density	2.48 g/cm³, solid
Melting point	100°C (decomposes)
Solubility in water	4.7g/100g water
Hazards
EU classification	not listed
NFPA 704	0 1 0
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), also know as KPS, 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. It takes also an important role as initiator for emulsion polymerization.

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

v • d • e

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)

[edit] References

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