Potassium persulfate
Potassium persulfate (CAS: 7727-21-1), with the chemical formula K₂S₂O₈ and a molecular weight of 270.32 g/mol, is a powerful oxidizing agent. This inorganic salt is widely recognised for its strong oxidizing properties, making it an indispensable reagent in various chemical synthesis processes, particularly as a free radical initiator. It finds significant application in polymer science and materials science.
- IUPAC
- Potassium peroxodisulfate
Polymerization Initiator
Potassium persulfate serves as a highly effective free radical initiator in emulsion polymerization processes, crucial for the production of polymers such as polyvinyl acetate and styrene-butadiene rubber. It generates radicals upon thermal or redox activation, initiating the polymerization chain reaction.
Oxidizing Agent in Synthesis
As a strong oxidant, potassium persulfate is employed in various organic and inorganic synthesis reactions. It facilitates oxidation of diverse substrates and is instrumental in C-H activation processes and other specialized chemical transformations.
Etching and Cleaning
Its potent oxidizing capabilities make it suitable for etching applications in the electronics industry and for the cleaning and surface treatment of metals. It can effectively remove organic contaminants and prepare surfaces for further processing.
Laboratory Reagent
Potassium persulfate is a standard reagent in analytical chemistry and research laboratories. It is used in methods requiring strong oxidizing conditions, such as in the determination of certain inorganic species or in sample preparation.
| Molecular weight | 270.32 |
|---|---|
| Linear formula | K2S2O8 |
| Assay | ≥99.0% |
| Grade | ACS reagent |
| Vapour density | 9.3 (vs air) |
| Impurities tested | ≤0.001% Cl compounds≤0.005% insolubles |
Hazard statements
- H272May intensify fire; oxidiser
- H302Harmful if swallowed
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H319Causes serious eye irritation
- H334May cause allergy or asthma symptoms if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P220Keep away from clothing and combustible materials
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P342
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 1492 5.1 / PGIII |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | O,Xn |
| Risk statements (R) | 8-22-36/37/38-42/43 |
| Safety statements (S) | 22-24-26-37 |
| Cation traces | Fe: ≤5 ppmMn: ≤2 ppmheavy metals (as Pb): ≤0.001% |
| Anion traces | chloride (Cl-): ≤50 mg/kg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Potassium Persulfate used for?
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Potassium persulfate is primarily used as a strong oxidizing agent and a free radical initiator in chemical synthesis, polymer science, and materials science. It is also utilized in etching and cleaning applications and as a general laboratory reagent.
What is the CAS number and chemical formula for Potassium Persulfate?
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The CAS number for Potassium Persulfate is 7727-21-1, and its chemical formula is K₂S₂O₈.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Potassium Persulfate in an ACS reagent grade with an assay of ≥99.0%. TSS does not represent this product as USP, BP, or EP grade.
What are the main safety hazards associated with Potassium Persulfate?
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Potassium persulfate is a strong oxidizer that may intensify fire (H272) and is harmful if swallowed (H302). It causes skin irritation (H315), serious eye irritation (H319), and may cause an allergic skin reaction (H317). Inhalation may cause respiratory irritation (H335) and allergy or asthma symptoms or breathing difficulties if inhaled (H334).
How is Potassium Persulfate shipped and exported by TSS?
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Potassium Persulfate is shipped and exported by TSS according to international regulations for hazardous materials. It is classified under UN 1492, hazard class 5.1, with a Packing Group III.
How can I request a quote or sample of Potassium Persulfate?
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To request a quote or sample of Potassium Persulfate, please contact our sales team through the website or by phone. We will be pleased to assist with your specific requirements.
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