Sodium Persulfate SPS Disodium peroxydisulfate CAS 7775-27-1

Tree Chem Sodium Persulfate (CAS 7775-27-1) is a white crystalline compound with strong oxidizing ability and excellent solubility in water. It serves as a key initiator in the polymerization of monomers such as styrene, acrylonitrile, and vinyl chloride. The product is known for its consistent purity and stable decomposition characteristics.

Produced under advanced manufacturing control, Tree Chem ensures SPS maintains minimal impurities and meets strict quality standards suitable for chemical synthesis, surface finishing, and semiconductor cleaning applications. For orders or detailed specifications, please contact info@cntreechem.com.

Specification

Tree Chem specializes in the professional manufacture of peroxides, covering both inorganic and organic peroxide series with product quality consistently ranked among the best in the world. Our production facilities are located across several provinces in China, enabling efficient regional supply and strong logistical advantages for global customers. As a licensed exporter of Class 5.1 and Class 5.2 hazardous chemicals, Tree Chem possesses extensive international shipping experience and full compliance certifications. Over the years, we have worked closely with numerous well-known downstream enterprises, providing reliable technical support, stable supply, and customized peroxide solutions that meet the highest industry and safety standards.

Basic Information

Technical Specification

Applications

Water and Wastewater Treatment

• Sodium Persulfate is widely used as a strong oxidizing agent in water treatment and environmental remediation. It effectively removes persistent organic pollutants such as phenols, dyes, and pharmaceuticals through sulfate radical oxidation. These radicals have higher redox potential and longer half-life compared to hydroxyl radicals, making the process efficient under a broad pH range.
• In drinking water purification, Sodium Persulfate eliminates trace contaminants and odor-causing substances without forming chlorinated by-products. In industrial wastewater systems, it decomposes refractory organic matter, reduces COD, and improves biodegradability, especially when activated by heat or alkali. In soil and groundwater cleanup, it breaks down hydrocarbons, chlorinated solvents, and pesticides without secondary pollution.

Electronics and Semiconductor Manufacturing

• Sodium Persulfate serves as an efficient etching and cleaning agent in the semiconductor and printed circuit board industries. It removes organic residues, photoresist, and metal contaminants without damaging the substrate. In PCB production, it acts as an environmentally friendly copper etchant that provides excellent precision and uniformity, replacing ferric chloride in many modern processes. In the display panel industry, including LCD and OLED manufacturing, it is used for electrode patterning and substrate cleaning to achieve high-resolution and defect-free results.

Textile and Paper Industry

• In textiles, Sodium Persulfate functions as an oxidative desizing and bleaching agent, removing starch, wax, and natural pigments from fabrics. This enhances dye uptake and color brightness while meeting environmental standards as a chlorine-free oxidant.
• In papermaking, it is used as a pulp brightener and deinking agent, oxidizing residual lignin and ink from recycled paper. Sodium Persulfate also improves starch modification processes, enhancing coating viscosity, adhesion, and the overall printability of paper products.

Food Processing Industry

• Sodium Persulfate is used as a flour improver and bleaching agent. It oxidizes flour proteins to strengthen gluten, improving dough elasticity, structure, and fermentation properties. It also enhances flour whiteness by breaking down natural pigments. In food packaging applications, it contributes to the surface treatment of materials, improving barrier properties and product shelf life.

Pharmaceutical and Biotechnology Applications

• Sodium Persulfate functions as an oxidizing agent and polymerization initiator in the synthesis of pharmaceutical intermediates. It ensures controlled oxidation reactions that maintain purity and consistency in drug production. In biotechnology, it initiates polymerization for acrylamide and acrylic acid monomers used in hydrogels, biosensors, and medical coatings. It can also sterilize and disinfect medical equipment due to its strong oxidizing capability.

Oilfield and Energy Industry

• In the oilfield sector, Sodium Persulfate acts as a gel breaker in hydraulic fracturing fluids, decomposing polymer residues and restoring fluid flow. It also contributes to enhanced oil recovery and the treatment of oily wastewater. In energy-related fields, Sodium Persulfate is applied in metal recovery for battery materials, electrode cleaning, and emission control, helping reduce industrial pollutants such as sulfur dioxide and nitrogen oxides.

Polymerization and Material Synthesis

• Sodium Persulfate is one of the most important free-radical initiators in polymer production. It decomposes thermally or through redox systems to generate sulfate radicals that initiate polymerization of vinyl, acrylate, and styrene monomers. It is essential for producing polyacrylamide, acrylic emulsions, latex, PVC, and synthetic rubber. It ensures stable reaction control, uniform polymer structure, and consistent product performance.

Cosmetic and Daily-Chemical Uses

• In cosmetics, Sodium Persulfate is used as an oxidizing agent in hair bleaching and dyeing products. Combined with hydrogen peroxide or potassium persulfate, it ensures fast, even oxidation of melanin for bright, uniform color results. It is also used in toothpaste formulations as a whitening component, effectively removing stains and discolorations. Its use in personal care products follows strict formulation and safety control standards.

Storage & Handling

• Store in cool, dry, and well-ventilated areas, away from heat and direct sunlight.
• Keep in airtight containers to prevent exposure to moisture.
• Avoid contact with organic substances, reducing agents, and metals such as iron and copper.
• Handle with care — prevent impact or friction that could trigger decomposition.
• Avoid direct contact with skin, eyes, and clothing; wear protective equipment when handling.

Usage Notice

• Handle only under appropriate ventilation conditions.
• Avoid mixing with incompatible materials or contaminants.
• Prevent dust generation and static buildup during transfer.
• In case of contact, rinse thoroughly with water and seek medical advice if necessary.
• Industrial Wastewater Treatment Agent: Sodium Persulfate 20%, Citric Acid 1%, Cinnamaldehyde 20%, Sodium Hydroxide 1%, Deionized Water balance. Sodium Persulfate oxidizes refractory organics, lowers COD, and improves biodegradability.
• PCB Etching Solution: Sodium Persulfate 200 g/L, Water balance. Acts as a clean, precise copper etchant replacing ferric chloride, providing high etching uniformity.
• Flour Improver: Sodium Persulfate 0.05%, Ammonium Chloride 0.5%, Enzyme 0.02%, Wheat Flour balance. Enhances gluten structure and dough elasticity while improving color brightness.
• Hydraulic Fracturing Fluid Breaker: Sodium Persulfate 0.1%, Polyacrylamide Gel 0.5%, Water balance. Decomposes gel polymers, restoring fluid flow and reducing formation damage.
• Hair Bleaching Cream: Sodium Persulfate 3%, Potassium Persulfate 2%, Hydrogen Peroxide 6%, Stabilizer 0.5%, Water balance. Oxidizes melanin efficiently for fast and uniform hair lightening.
• Acrylic Polymer Emulsion: Sodium Persulfate 0.5% (based on monomer weight), Acrylate Monomers 98.5%, Emulsifier 0.7%, Water balance. Initiates polymerization, ensuring stable particle formation and uniform dispersion.

Packaging

• 25 kg woven bag
• 200 kg bag
• 500 kg bag
• 1000 kg jumbo bag