Ammonium Persulfate (APS)
| Formula: | (NH₄)₂S₂O₈ |
| EC Number (EINECS): | 231-786-5 |
| HS Code: | 28334000 |
| UN Number: | 1444 |
| IUPAC Name: | Ammonium Peroxydisulfate |
| Also Known As: | Ammonium Peroxodisulfate; APS; Diammonium Peroxydisulfate |
| Molecular Weight, g/mol: | 228.20 |
Typical Specifications
| Appearance: | White crystalline salt / powder |
| Odor: | Odorless |
| Melting Point, °C: | Decomposes >120 |
| Density, g/cm³ (at 20°C): | 1.98 |
| Purity, %: | ≥98.0 |
| Grades Available: | Industrial Grade, Laboratory Grade |
| Packaging: | 25kg HDPE bags with inner liner, jumbo bags |
Applications / Uses
Primary Applications
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Radical initiator for polymerization of monomers (acrylonitrile, styrene, butadiene)
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Used in etching and cleaning of printed circuit boards (PCB manufacturing)
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Oxidizing agent in textile, cosmetic, and paper industries
Secondary Applications
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Soil conditioner and wastewater treatment (oxidizing organic contaminants)
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Ingredient in hair bleaching and cosmetic formulations
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Cleaning and pickling of metal surfaces
End Industries Served: Polymers & Plastics, Electronics, Textiles, Cosmetics, Paper, Water Treatment, Metal Finishing
Safety & Handling Information
Hazard Class (GHS): Oxidizing Solid (Category 3), Acute Toxicity (Category 4), Skin Irritation (Category 2), Respiratory Sensitizer (Category 1)
Hazard Statements (H-Codes):
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H272: May intensify fire; oxidizer
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H302: Harmful if swallowed
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H315: Causes skin irritation
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H334: May cause allergy or asthma symptoms if inhaled
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H335: May cause respiratory irritation
Precautionary Statements (P-Codes):
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P210: Keep away from heat and combustible materials
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P220: Keep/Store away from clothing and flammable materials
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P280: Wear protective gloves/eye protection/face protection
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P284: Wear respiratory protection if dust is generated
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P301 + P312: IF SWALLOWED – call a doctor if unwell
Storage Conditions
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Store in a cool, dry, well-ventilated place
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Keep containers tightly closed
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Avoid contamination with organic or combustible materials
Transport Information
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ADR/RID: Class 5.1, UN1444, PG III
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IMDG: Class 5.1, UN1444, PG III
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IATA: Class 5.1, UN1444, PG III
Regulatory Information
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REACH Status (EU): Registered
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FDA Approval: Not approved for food use
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ISO Certification: Available on request (ISO 9001 for manufacturing grade)
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Country Standards: Conforms to international technical specifications for industrial grade
Additional Information
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Shelf Life: 1 year (stored properly in sealed bags)
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Country of Origin: [To be filled – e.g., India, China, EU]
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Typical Packaging Sizes: 25kg HDPE bags, 500kg/1000kg jumbo bags
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Storage Temperature: 10–25°C, away from heat sources and direct sunlight
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Stability: Stable under recommended storage; decomposes at elevated temperature, releasing oxygen