Sodium persulfate
General Product Information
| Article | Sodium persulfate |
| Synonyms | Sodium peroxodisulfate, Sodium peroxodisulphate, Sodium peroxydisulfate, Sodium peroxydisulphate |
| CAS No. | 7775-27-1 |
| EEG No. | – |
| EINECS No. | 231-892-1 |
| IMO | Class 5.1 |
| Tariff Code | 28334000 |
| UN No. | 1505 |
| VLG/ADR | Class 5.1, Packing Group III |
Description
Sodium persulfate is a white, crystalline, Odorless salt known for its strong oxidizing properties. It is widely used in industrial applications, including polymerization, metal etching, textile treatment and environmental cleaning .
Characteristics
- Odor: Odorless.
- Hygroscopic: –
- Color: White.
- Grade: Technical.
- Solubility: Highly soluble in water.
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure | Na2S2O8 |
| Molar Weight | 238.10 g/mol |
| Melting Point | Approx. 180 °C (decomposes). |
| Boiling Point | – |
| Density | – |
| Refractive Index | – |
| pH. | Approx. 3-5 (on 1% solution). |
Applications
Sodium persulfate is applied in various ways, for instance:
1. Plastics & Rubber Industry
As an initiator for radical polymerization of monomers such as acrylonitrile, styrene and butadiene.
2. Electronics
As an etching solution for copper in printed circuit board (PCB) manufacturing…
3. Soil & Water Purification
Used in soil and water treatment processes to break down organic contaminants.
4. Cosmetics
Use in hair bleaching agents.
5. Paper & Textile Industry
As a bleaching agent for natural fibers and pulp.
Interessing Links
- CAS Common Chemistry – Sodium Persulfate
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Sodium Persulfate – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Sodium persulfate