Sodium persulfate

Sodium persulfate
Two sodium cations and one peroxodisulphate anion
Ball-and-stick model of the crystal structure
Sodium persulfate as a white powder
Names
Other names
Sodium peroxodisulfate
Sodium peroxodisulphate
Sodium peroxydisulfate
Sodium peroxydisulphate
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.028.993 Edit this at Wikidata
EC Number
  • 231-892-1
RTECS number
  • SE0525000
UNII
UN number 1505
  • InChI=1S/2Na.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 checkY
    Key: CHQMHPLRPQMAMX-UHFFFAOYSA-L checkY
  • InChI=1/2Na.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
    Key: CHQMHPLRPQMAMX-NUQVWONBAA
  • [Na+].[Na+].O=S(=O)([O-])OOS([O-])(=O)=O
Properties
Na2S2O8
Molar mass 238.10 g/mol
Appearance White powder
Density 2.601 g/cm3[1]
Melting point 180 °C (356 °F; 453 K) decomposes
55.6 g/100 ml (20 °C)
Hazards
GHS labelling:
GHS03: Oxidizing GHS07: Exclamation mark GHS08: Health hazard
Danger
H272, H302, H315, H317, H319, H334, H335, H371
P220, P261, P280, P305+P351+P338, P342+P311
NFPA 704 (fire diamond)
Flash point Non-flammable
Safety data sheet (SDS) ICSC 1136
Related compounds
Other anions
Sodium dithionite
Sodium sulfite
Sodium sulfate
Other cations
Potassium persulfate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sodium persulfate is the inorganic compound with the formula Na2S2O8. It is the sodium salt of peroxydisulfuric acid, H2S2O8, an oxidizing agent. It is a white solid that dissolves in water. It is almost non-hygroscopic and has good shelf-life.

  1. ^ Allan, David R. (2006). "Sodium peroxodisulfate". Acta Crystallographica Section E. 62 (3): i44–i46. doi:10.1107/S1600536806004302.