Potassium Persulfate K₂S₂O₈ Dipotassium persulfate CAS 7727-21-1

Tree Chem Potassium Persulfate is a stable, non-flammable inorganic peroxide with excellent performance in initiating polymerization reactions for synthetic resins, rubber, and latex. Its high assay, low impurity level, and clear aqueous solution ensure consistent reactivity and controlled decomposition under industrial conditions.

In addition to polymerization, Potassium Persulfate is also utilized in circuit board cleaning, printed wiring etching, textile desizing, and environmental oxidation processes. It is recognized for providing clean oxidation without chlorine residues, making it a preferred choice for precision and eco-friendly manufacturing.

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 Environmental Treatment

• Potassium Persulfate is a chlorine-free oxidant used in advanced oxidation processes where it forms sulfate radicals (SO₄•⁻) to degrade recalcitrant organics, dyes, pesticides, and pharmaceuticals. Its radical pathway is effective across a wide pH range and leaves minimal secondary pollution.
• In drinking-water polishing, it reduces trace odor and color bodies, converts nitrite, and assists in micro-pollutant control. In industrial wastewater, it supports COD and ammonia reduction, decolorization, and sulfide oxidation, and it can be activated by heat, UV, alkaline conditions, or Fe²⁺ to accelerate kinetics.
• For soil and groundwater remediation, in-situ persulfate injection oxidizes petroleum hydrocarbons and chlorinated solvents while supplying sustained oxidative capacity in low-permeability zones.

Electronics and Semiconductor Manufacturing

• In wafer fabrication, Potassium Persulfate aids post-etch and post-CMP cleaning by removing organic residues and trace metals without chlorine corrosion risks. It helps maintain low ionic contamination and high yield in fine features.
• In PCB lines, it serves as a controlled copper etchant and pre-plate surface activator, providing uniform etch rates and clean sidewalls that improve adhesion in subsequent metallization. Display panel and LED processes also use it for precise electrode cleaning and substrate preparation.

Food Industry

• As a permitted dough improver, Potassium Persulfate oxidizes sulfhydryl groups in gluten to form disulfide bonds, enhancing dough strength, gas retention, and crumb structure. It can brighten flour and help standardize flour performance across harvest variability.
• In starch modification, mild oxidation with persulfate improves paste clarity and viscosity stability, supporting bakery fillings and noodle applications under regulated dosage controls.

Pharmaceuticals and Biotechnology

• Potassium Persulfate functions as a clean oxidant in synthesis routes for vitamins, steroids, and specialty APIs, facilitating hydroxylation and dehydrogenation steps with simple workup. Its inorganic by-products simplify downstream purification.
• As a radical initiator, it polymerizes acrylamide and acrylic acid to form hydrogels and coatings for drug delivery and biomedical devices, where low residual monomer and high gel clarity are required.

Textile and Paper Manufacturing

• In textiles, Potassium Persulfate is used for desizing and preparatory bleaching that lifts natural pigments and size without harsh fiber attack, improving dye uptake and shade reproducibility. It fits both continuous and batch pretreatment under alkaline or activated conditions.
• Papermaking benefits include deinking and brightness gains in recycled pulp, selective lignin modification, and improved starch performance for coating and sizing with reduced AOX relative to chlorine systems.

Oilfield and Chemical Processing

• In fracturing fluids, Potassium Persulfate acts as a breaker that depolymerizes guar and polyacrylamide gels at controlled rates, lowering viscosity for efficient flowback and proppant recovery. Thermal and catalytic activation allow tuning to downhole conditions.
• In polymer chemistry, it initiates emulsion and solution polymerizations for acrylics and AN systems, delivering low residual impurities and stable molecular-weight control in waterborne platforms.

Personal Care and Daily Chemicals

• In hair lightening powders, Potassium Persulfate provides strong oxidative capacity that, in combination with hydrogen peroxide, removes melanin for rapid lift while maintaining paste stability. Formulation aids and pH control manage dusting and scalp comfort.
• Oral-care and hygiene products leverage its mild oxidizing action for stain control and antimicrobial support, balancing efficacy with low residue and clean sensory profiles.

Emerging and High-Tech Applications

• Energy-materials processing uses Potassium Persulfate for electrode surface conditioning in lithium-ion and sodium-ion systems, promoting clean, active interfaces and consistent cycle life.
• Air-handling and surface-sanitation technologies adopt persulfate-based oxidizing systems to reduce VOCs and bioaerosols, aligning with greener, low-chlorine disinfection strategies in public and industrial spaces.

Storage & Handling

• Potassium Persulfate is non-flammable but releases oxygen that can accelerate combustion. It must be stored under dry, cool, and sealed conditions to prevent moisture absorption and decomposition. Avoid exposure to sunlight, heat, and humidity.
• Contamination with reducing agents, iron, or trace metals may trigger decomposition; therefore, avoid contact with incompatible materials. Due to its mild bleaching and corrosive effect in moist environments, direct contact with skin, eyes, and fabrics should be avoided during use.

Usage Notice

• Handle in a dry, well-ventilated area.
• Avoid contact with acids, reducing agents, or organic matter.
• Use clean and non-metallic tools for handling.
• Dispose of waste in compliance with local environmental regulations.
• Drinking water purification: Potassium Persulfate 10 mg/L + Hydrogen Peroxide 5 mg/L – eliminates color, odor, and organic contaminants.
• Industrial wastewater treatment: Potassium Persulfate 4 mg/L + Fe²⁺ 1 mg/L – oxidizes organics and reduces COD to <30 mg/L.
• Semiconductor cleaning: H₂SO₄ : K₂S₂O₈ = 4:1 (v/v), 120–150 °C – removes metal impurities and organic films.
• PCB etching solution: K₂S₂O₈ 100 ± 10 g/L + H₂SO₄ 1–3 % – provides clean copper etching with fine control.
• Flour improver: Potassium Persulfate 0.001–0.002 % of flour – enhances dough strength and color brightness.
• Hydrogel polymerization: Potassium Persulfate 0.2 % + Acrylamide 5 % – initiates stable polymer crosslinking.
• Textile bleaching: Potassium Persulfate 1–3 g/L at 100 °C – improves fabric whiteness and dyeability.
• Paper pulp bleaching: Potassium Persulfate 1.2 % at 60 °C, pH 10.5 – removes lignin and increases brightness.
• Oilfield fracturing fluid: Potassium Persulfate 0.05–0.2 % – acts as breaker for polymer degradation.
• Hair bleach powder: Potassium Persulfate 15–25 %, Hydrogen Peroxide 3–6 % – oxidizes melanin for hair lightening.

Packaging

• 25 kg bags
• 500 kg jumbo bags