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High Purity Potassium Persulphate 7727-21-1 | Reliable Supplier

Potassium persulphate (K₂S₂O₈, CAS: 7727-21-1) is a powerful inorganic oxidizing agent with wide usage across the chemical industry, environmental treatment, electronics, polymerization, and metallurgy. With increased demand for high-purity initiators, potassium persulphate (also referred to as potasium persulphate) showcases technical advantages in initiation efficiency, storage stability, and environmental performance.
Learn more or inquire: Potassium persulphate by Fizachem

1. Industry Overview & Trends

The potassium persulphate market exhibits a steady CAGR of 4.5% from 2020-2027, driven by rapid expansion in electronics etching, polymerization initiators, water treatment, pulp & paper bleaching. Main global producers are concentrated in China, Japan, and Europe.

Global Market Share (%), Major Producers (2023)
Region	Key Producer	Market Share	Production Capacity (MT/year)
China	Fizachem, United Initiators	~48%	31,000
Japan	PeroxyChem, Adeka	~16%	8,500
Europe	MGC, Persulfates Europe GmbH	~28%	16,300
Others	Niche Manufacturers	~8%	4,800

* Source: MarketsandMarkets, Kline & Co., 2023 Persulfates Industry Report

High Purity Potassium Persulphate 7727-21-1 | Reliable Supplier

Potassium persulphate crystal morphology

2. Technical Specification & Industry Standards

Below is a technical data summary according to latest potassium persulphate SDS (Safety Data Sheet) and producer certificates (ISO 9001:2015, REACH, RoHS). This standardization ensures consistency and safety for all applications.

Potassium Persulphate — Typical Technical Specifications
Parameter	Value (Industrial Grade)	Value (High Purity)	Test Method / Standard
Appearance	White crystalline powder	White crystalline powder	Visual Inspection, ISO 8213
Assay (K₂S₂O₈, %)	≥ 99.0	≥ 99.5	ISO 6353/3
Chloride (Cl, %)	≤ 0.02	≤ 0.005	ISO 2488
Moisture (%)	≤ 0.10	≤ 0.05	ISO 760 (Karl Fischer)
Iron (Fe, ppm)	≤ 20	≤ 5	ICP-OES, ISO 11885
pH (5% solution)	~4.0	~4.0	ASTM D1293
Decomposition temp, °C	~100	~100	DSC/ISO 11357
Bulk density (g/l)	700 - 900	700 - 900	ISO 697

Note: Values are typical and may vary based on supplier batch. Always refer to potassium persulfate SDS for precise safety handling and regulatory info.

3. Manufacturing Process of Potassium Persulphate

K₂SO₄
Potassium Sulphate

Raw Material

➜

H₂SO₄
Sulfuric Acid

Electrolyte

➜

Electrolysis (Electrochemical Cell)

Controlled voltage, platinum anode

➜

K₂S₂O₈
Potassium Persulphate

Crystallization, Filtration, Drying

Detailed reference: Academic review of potassium persulphate electrolysis (Elsevier, 2020)

Key manufacturing standards strictly adhered to: ISO 9001, ISO 14001, and ANSI/ASTM chemical test methods.
Critical steps: 1) Selection of high-purity K₂SO₄ and acid; 2) Use of platinum for electrode stability; 3) Precise current, temperature, and cooling control; 4) Multi-stage crystallization and vacuum drying

4. Technology Advantages of Potassium Persulphate

Major potassium persulphate applications

Material Features & Manufacturing Quality

Oxidizing Power: Persulfate anion (S₂O₈²⁻) has a redox potential of +2.1 V, much higher than peroxides or ozone.
Inert towards Most Organics: Ensures low undesired side reactions in polymerization and etching.
Corrosion Resistance: Stable in sealed, dry storage; packaged in anti-UV HDPE drums (potassium persulphate SDS specification).
High Reactivity, Low Residue: Complete decomposition yields harmless sulfate ions (environment-friendly).
Long Shelf Life: ≥ 24 months under ISO/ASTM tested packaging, moisture
Certified Quality: Every batch meets REACH, RoHS, and ISO 9001 certification.

Chemical & Physical Parameters Comparison

KEY TAKEAWAY: Choose potassium persulphate for polymerization where ion contamination from sodium/ammonium must be minimized (e.g., electronics).

5. Application Scenarios & Case Studies

Main Applications of Potassium Persulphate
Industry	Application Type	Typical Dosage (g/L)	Effect/Advantage
Polymer Manufacturing	Polymerization initiator (latex, acrylics, SBR)	1-3	High conversion, low odor, pure end product
Electronics	Micro-etching, PCB cleaning	10-15	Uniform copper removal, residue-free
Environmental Remediation	In situ chemical oxidation (ISCO)	25-40	Destroys organic pollutants, nitrate-free
Textiles	Desizing, bleaching	2-4	Bright white finish, mild on fabric
Mining/Metallurgy	Ore flotation, gold leaching	2-8	Selective oxidation, residue control

Case Example: PCB Manufacturer — Application of Potassium Persulphate

Background: A leading printed circuit board (PCB) manufacturer in Taiwan faced issues with inconsistent etching and copper residue.
Solution: Switched to high-purity potassium persulphate supplied by Fizachem, supported by ISO 9001-compliant technical training.
Result: Achieved >98.5% process yield, reduced copper wastage by 23%, and met RoHS and REACH compliance.

6. Product Comparison Table

Comparison of Major Persulphate Salts
Property	Potassium Persulphate	Ammonium Persulphate	Sodium Persulphate
Molecular Formula	K₂S₂O₈	(NH₄)₂S₂O₈	Na₂S₂O₈
Molecular Weight	270.32	228.20	238.11
Solubility (g/100mL, 20°C)	4.7	8.0	54.0
Initial Decomp. Temp (°C)	100	120	80
Common Application	Electronics, Latex	Polymerization, Bleaching	Cleaning, Soil Remediation
Typical Residue	K⁺	NH₄⁺	Na⁺
ISO Compliance	ISO 9001, ISO 14001	ISO 9001	ISO 9001

7. Customization & Delivery (Fizachem)

Package options: 1kg, 10kg, 25kg HDPE drums, 1200kg IBCs, moisture-protected bags (per potassium persulphate SDS & international shipping).
Purity grades: 99.0%, 99.5%, 99.8% (electronics), food grade on request (ISO 22000/2018, FDA for food-processing aids).
Specifications on request: Particle size, pH value, trace impurity control, customized drum labelling/barcoding.
Lead Time: 7-14 days upon confirmation; urgent air express available.
OEM/Private label available for global traders (custom documentation, REACH/IMDG MSDS issued).
Warranty: 24 months from shipment; batch testing available on request.
Support: 24/7 technical hotline, SDS/RoHS download, supply chain tracking.

8. Customer Experiences & EEAT (Expertise, Experience, Authority, Trustworthiness)

Long-term clients: China Petrochemical, Sumitomo Chemicals, BASF Electronics, Taiwan PCB Group.
Academic endorsement: Referenced in leading journals in SAGE – Journal of Hazardous Substances and ACS – Industrial & Engineering Chemistry.
ISO, REACH, RoHS Certified: Annual audits by SGS/TÜV, batch traceability system compliant with FDA 21 CFR Part 11.
Feedback: “Since deploying potassium persulphate from Fizachem, our SBR latex lines have seen a 14% throughput improvement and reduced rejection rates.” – Client, Top 3 Polymer Producer, 2023.
Safety: All shipments with up-to-date potassium persulfate SDS, UN class coded, and globally accepted labelling.

9. FAQ: Potassium Persulphate Industry Terms & Technical FAQ

Frequently Asked Questions

Q1: What is the primary industry-standard for potassium persulphate quality?
A: ISO 8213/ISO 9001 and REACH compliance are mandatory for leading manufacturers. Customers should always request confirmation of batch traceability and certificate of analysis (COA) for every lot.
Q2: Are there residue or corrosion issues when using potassium persulphate in electronics?
A: Potassium ion residues are much less aggressive than sodium or ammonium. With proper rinsing per potassium persulfate SDS, no conductive/corrosive issues occur on finished PCBs.
Q3: Which packing is recommended for moisture-sensitive projects?
A: Double-layer HDPE drums with foil sealing or nitrogen-filled bags as per ASTM E104 (moisture less than 0.05%).
Q4: How does potassium persulphate compare to ammonium persulphate for polymerization processes?
A: Potassium persulphate offers higher purity, lower ammonium contamination, and is preferable for high-transparency or low haze latex/PSA production.
Q5: What are the typical shelf-life and recommended storage?
A: At 25°C and < 60% RH, sealed packaging, the shelf life is ≥24 months (ISO 11607-1 validated), provided no cross-contamination with organic matter.
Q6: Is there special disposal procedure for potassium persulphate?
A: Follow national hazardous waste directive 91/689/EEC; neutralize with sodium bisulfite, then excess sulfate can be safely managed by regulated incineration or dilution.
Q7: Can potassium persulphate be customized for ultra-high purity microelectronic use?
A: Yes, with impurity (Fe, Cl) ≤1 ppm, certified according to SEMI C78 specs for microelectronics, and batch-validated by ICP-OES.

10. Delivery, Warranty & Support

Lead time: Standard delivery within 7–12 business days. Rush orders available.
Warranty: Full replacement for standard compliance or transit damage within 24 months after shipment.
Support: 365-day technical consultation, emergency SDS download, video installation guides.
Contact: Potassium persulphate product page | inquiry@fizachem.com

11. References & Further Reading

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