Sodium peroxosulphate (short form NaPS, trade name sodium persulfate) is the salt of
peroxodisulphuric acid. It is a strong oxidizer and radical donator for polymerisation. Due to its
high oxidation potential it can cause ignition under certain conditions. NaPS is highly soluble in
water, aqueous solutions show an acidic reaction and have limited stability (see
table 1 - 3)
Unlike ammonium persulfate, NaPS is free of ammonium ions and causes fewer problems in wastewater
The most important application for NaPS is in the water-based emulsion polymerisation of organic monomers in aqueous systems. The monomers are either sufficiently soluble in water and precipitate during polymerisation or polymerisation takes place in an aqueous emulsion of the monomers, as with styrene-butadiene and Acrylonitrile.
Large quantities of NaPS are used for etching and pickling metal surfaces (copper and copper
alloys). Etching thin copper coating is a key part in the production of printed circuit boards.
Other applications of NaPS
in the cosmetics industry as a booster for hair bleaches and an oxidizer in hair dyes
in the paper industry for re-pulping and de-inking
in order to recover metals and metal salts, for oxidative treatment of high grade metal ores
- in the photographic industry for regenerating bleaching baths for color stock
in the textile industry for de-sizing
for the production of desinfectants
- in-situ decontamination of industrial areas: degradation of chlorinated hydrocarbons
On request we produce NaPS with an anti-caking agent.
Our standard packing is in 25 kg PE-bags or big bags (FIBC).
Please contact us for detailed application-recommendations.