|Jmol-3D images||Image 1|
|Molar mass||238.10 g/mol|
(Loose bulk density: 1.12 g/cm3)
|Melting point||180 °C (356 °F; 453 K) decomp.|
|Solubility in water||55.6 g/100 ml (20 °C)|
|EU Index||Not listed|
|R-phrases||R8 R20 R22 R36 R37 R38|
|S-phrases||S17 S26 S36|
|Other anions||Sodium dithionite
|Other cations||Potassium persulfate|
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
|(what is: / ?)|
Sodium persulfate (Na2S2O8) is a chemical compound. It is a strong oxidizer. It is a severe irritant of the skin, eyes, and respiratory system. It is almost non-hygroscopic and has particularly good ability to be stored for long time. It is easy and safe to handle. It is not combustible, but releases oxygen easily and assists combustion of other materials.
It is used as a bleach, both standalone (particularly in hair cosmetics) and as a detergent component. It is a replacement for ammonium persulfate in etching mixtures for zinc and printed circuit boards, and is used for pickling of copper and some other metals. It is a source of free radicals, making it useful as a radical initiator for emulsion polymerization reactions and for accelerated curing of low formaldehyde adhesives. It is also used as a soil conditioner and in manufacture of dyestuffs, modification of starch, bleach activator, desizing agent for oxidative desizing, etc.
Conditions/substances to avoid mixing persulfates with are: moisture, heat, flame, ignition sources, shock, friction, reducing agents, organic material, sodium peroxide, water, aluminium, and powdered metals.
The standard redox potential of sodium persulfate into hydrogen sulfate is 2.1 V, which is higher than that of hydrogen peroxide (1.8 V) but lower than ozone (2.2 V). The sulfate radical formed in situ has a standard electrode potential of 2.7 V.
- FMC Corporation. Sodium Persulfate. http://www.fmcchemicals.com/Portals/chem/Content/docs/Tech%20Data%20Sheets/sodpersulfate.pdf (accessed Nov 17, 2013).
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- Pietzsch, A.; Adolph, G. J. Chem. Technol. Biotechnol. 1911, 30, 85.
- Anonymous. Spectral Database for Organic Compounds. http://sdbs.db.aist.go.jp/sdbs/cgi-bin/direct_frame_disp.cgi?sdbsno=40242 (accessed Oct 7, 2013).
- Block, Philip A., Richard A. Brown, and David Robinson. "Novel activation technologies for sodium persulfate in situ chemical oxidation." Proceedings of the Fourth International Conference on the remediation of chlorinated and recalcitrant compounds. 2004.