Sodium Persulfate
| Formula: | Na₂S₂O₈ |
| CAS Number: | 7775-27-1 |
| EC Number (EINECS): | 231-892-1 |
| HS Code: | 28332100 |
| UN Number: | 1508 |
| IUPAC Name: | Sodium Peroxydisulfate |
| Also Known As: | Sodium Persulphate; Disodium Peroxydisulfate |
| Molecular Weight, g/mol: | 238.1 |
Typical Specifications
| Appearance: | White crystalline powder |
| Odor: | Odorless |
| Melting Point, °C: | 90–95 (decomposes) |
| Boiling Point, °C: | Decomposes before boiling |
| Density, g/cm³ (at 20°C): | 2.48 |
| pH (1% solution): | 5–7 |
| Purity, %: | ≥98 |
| Grades Available: | Industrial, Technical |
| Packaging: | 25kg bags, 500kg jumbo bags, bulk |
Applications / Uses
Primary Applications
-
Initiator in polymerization reactions (acrylics, styrene, methacrylate)
-
Oxidizing agent in chemical synthesis
-
Used in etching and cleaning of printed circuit boards
Secondary Applications
-
Textile bleaching and cleaning applications
-
Soil and water treatment processes
-
Ingredient in laboratory reagents
End Industries Served: Polymers, Chemicals, Textiles, Electronics, Water Treatment, Laboratories
Safety & Handling Information
Hazard Class (GHS): Oxidizing solid (Category 2), Acute Toxicity (Category 4), Skin Irritation (Category 2)
Hazard Statements (H-Codes):
-
H272: May intensify fire; oxidizer
-
H302: Harmful if swallowed
-
H315: Causes skin irritation
-
H319: Causes serious eye irritation
Precautionary Statements (P-Codes):
-
P210: Keep away from heat/sparks/open flames
-
P220: Keep/Store away from combustible materials
-
P280: Wear protective gloves/eye protection
-
P305 + P351 + P338: IF IN EYES – rinse cautiously with water, remove contact lenses if present
Storage Conditions
-
Store in a cool, dry, well-ventilated area
-
Keep container tightly closed, away from combustible materials
-
Avoid contamination with organic materials or reducing agents
Transport Information
-
ADR/RID: Class 5.1 (Oxidizing substances), UN1508, PG II
-
IMDG: Class 5.1, UN1508
-
IATA: Class 5.1, UN1508