Sodium Persulfate
Sodium Peroxydisulfate
- CAS
- 7727-21-1
- EC
- 231-781-8
- Sectors
- Plastics & Polymers, Electronics & Solar PV, Water & Wastewater Treatment
Sodium Persulfate (CAS 7727-21-1) is an inorganic peroxydisulfate salt and strong oxidizing agent supplied as a white, free-flowing crystalline solid that activates under heat or alkaline conditions, and it is used as a polymerization initiator, a printed circuit board etchant and an oxidant for water treatment and soil remediation. It provides strong and controlled oxidation performance with reliable activation in heat or alkaline conditions. The product is supplied as a free flowing granular material and is valued for its predictable behaviour, clean decomposition and stable handling in large scale manufacturing.
Typical Properties
| Molecular formula | H2O8S2.2K |
|---|---|
| Molecular weight | 270.32 g/mol |
| Appearance | Potassium persulfate is a colorless or white, odorless crystalline material. |
| Form | Solid |
| Color | White |
| Odor | Odorless |
| Melting point | 14 °C |
| Boiling point | 141 °C |
| Density | 2.477 g/cm³ |
| Water solubility | 5 g/100 mL (20 °C) |
| pH | 3.2 (50g/l, H2O, 20°C) |
| GHS signal word | Danger · Oxidizing, Irritant / harmful, Health hazard |
| HS code | 28334000 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Sodium Persulfate
Applications
Used in electronics for printed circuit board etching, in polymer production as an initiator for emulsion and solution processes, in cosmetics and hair bleaching systems, in water treatment and soil remediation as an oxidant for persistent contaminants, in textile desizing operations and in specialty chemical formulations that require strong oxidation performance.
Safety & Risks
Irritant and powerful oxidising substance. Avoid contact with organics or combustible materials. Dust may cause respiratory sensitivity. Use appropriate PPE, good ventilation and segregated storage. Thermal breakdown can liberate oxygen.
Packaging
Supplied in 25 kilogram PE lined bags or fibre drums. Store in a cool and dry warehouse, protected from heat and incompatible substances in accordance with SDS instructions.