Potassium Persulfate
- CAS Number
- 7727-21-1
- HSN Code
- 28332990
- Molecular Formula
- K2S2O8
- Catalogue Number
- AL01258
- Purity
- ≥ 98%
- Molecular Weight
- 270.32 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Potassium persulfate (potassium peroxydisulfate) is a strong oxidizing salt widely used as a radical initiator in polymer chemistry and as an analytical reagent. It is a white crystalline powder that is highly soluble in water, making it suitable for various applications in both laboratory and industrial settings. With a molecular formula of K2S2O8 and a molecular weight of 270.32 g/mol, potassium persulfate is notable for its ability to generate free radicals upon thermal decomposition, which is essential in polymerization processes. Its strong oxidizing properties also make it valuable in analytical chemistry for various oxidation reactions.
Also known as Potassium peroxydisulfate.
- Catalogue No.
- AL01258
- CAS Number
- 7727-21-1
- Molecular Formula
- K2S2O8
- Molecular Weight
- 270.32 g/mol
- HSN Code
- 28332990
- Grade
- 98%
- Product Form
- Substance
Potassium persulfate appears as a white crystalline powder. It has a melting point of approximately 120 °C, and it decomposes upon heating, releasing oxygen. The compound is highly soluble in water, with a solubility of about 10 g/100 mL at 25 °C. Its density is approximately 2.47 g/cm³. The compound has a pH value of around 6.5 to 7.5 in solution, indicating its neutral nature. It has a flash point of 200 °C, which indicates that it is not flammable under normal conditions, but it is a strong oxidizer and should be handled with care.
- Appearance
- White crystalline powder
- Shelf Life
- 2 years
- Packaging
- 25 kg bags
- Storage
- Store in a cool, dry place away from combustible materials.
1.1 — Product identifier
- Chemical Name
- Potassium Persulfate
- Catalogue No.
- AL01258
- Product form
- Substance
- CAS Number
- 7727-21-1
- EC Number
- 231-781-8
- Grade
- 98%
- EC Index Number
- 016-094-00-4
- Chemical Formula
- K2S2O8
- HSN Code
- 28332990
- Synonyms
- Potassium peroxydisulfate
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Oxidizing agent, polymerization initiator
- Uses advised against
- Not specified
1.3 — Details of the supplier of the safety data sheet
- Company identification
- Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 — Emergency Contact Details
- Phone / e-Mail
- Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
2.3 — Other hazards
- Other hazards
- Strong oxidizer; may cause fire or explosion in contact with combustible materials.
3.1 — Substance
- Name
- Potassium Persulfate
- CAS No.
- 7727-21-1
4.1 — Description of first aid measures
- First-aid measures after inhalation
- Move to fresh air. If symptoms persist, seek medical attention.
- First-aid measures after skin contact
- Wash with soap and water. If irritation occurs, seek medical attention.
- First-aid measures after eye contact
- Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. If irritation persists, seek medical attention.
- First-aid measures after ingestion
- Rinse mouth. Do not induce vomiting. Seek medical attention immediately.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Irritation of the respiratory tract, skin, and eyes; potential for burns on contact with skin.
4.3 — Indication of any immediate medical attention and special treatment needed
- General information
- Treat symptomatically. Show this safety data sheet to the treating physician.
5.1 — Extinguishing media
- Suitable extinguishing media
- Water spray, carbon dioxide, dry chemical powder, foam.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- Decomposes on heating, releasing oxygen which can intensify fire.
5.3 — Advice for firefighters
- Protection during firefighting
- Do not enter fire area without proper protective equipment, including respiratory protection.
6.1.1 — For non-emergency personnel
- Emergency procedures
- Evacuate area and ventilate. Avoid contact with combustible materials.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Contain and collect spillage with non-combustible absorbent material. Dispose of in accordance with local regulations.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Handle with gloves and protective eyewear. Avoid contact with skin and eyes.
- Hygiene measures
- Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 — Conditions for safe storage, including any incompatibilities
- Storage conditions
- Store in a cool, dry place, away from heat and direct sunlight.
8.2 — Exposure controls
- Hand protection
- Protective gloves (e.g. nitrile rubber)
- Eye protection
- Chemical safety goggles or safety glasses
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Use appropriate respiratory protection if dust is generated.
9.1 — Information on basic physical and chemical properties
- Physical state
- Solid
- Colour
- White
- Odour
- Odourless
- Odour threshold
- Not applicable
- pH value
- 6.5 - 7.5
- Relative evaporation rate (butylacetate=1)
- Not applicable
- Melting point
- 120 °C
- Freezing point
- Not applicable
- Boiling point
- Decomposes
- Flash point
- 200 °C
- Auto-ignition temperature
- Not applicable
- Decomposition temperature
- > 120 °C
- Flammability (solid, gas)
- Not flammable, but a strong oxidizer
- Vapour pressure
- Not applicable
- Relative vapour density at 20°C
- Not applicable
- Density
- 2.47 g/cm³
- Solubility
- 10 g/100 mL in water at 25 °C
- Log Pow
- Not applicable
- Viscosity, kinematic
- Not applicable
- Viscosity, dynamic
- Not applicable
- Explosive properties
- Not explosive under normal conditions
- Oxidising properties
- Strong oxidizer
- Explosive limits
- Not applicable
10.1 — Reactivity
- Reactivity
- Stable under normal conditions, but decomposes upon heating.
10.2 — Chemical stability
- Chemical stability
- Stable under recommended storage conditions.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- No dangerous reactions known under normal conditions of use.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Strong reducing agents, combustible materials, and acids.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- Low toxicity; LD50 (oral, rat) > 2000 mg/kg.
- Skin corrosion/irritation
- Causes skin irritation.
- Serious eye damage/irritation
- Causes serious eye irritation.
- Respiratory or skin sensitisation
- May cause allergic skin reactions in sensitive individuals.
- Germ cell mutagenicity
- Not classified
- Carcinogenicity
- Not classified
- Specific target organ toxicity (single exposure)
- Not classified as a specific target organ toxicant.
- Specific target organ toxicity (repeated exposure)
- Not classified
12.1 — Toxicity
- Toxicity information
- Not specified
12.2 — Persistence - degradability
- Persistence - degradability
- Not specified
12.3 — Bioaccumulative potential
- Bioaccumulative potential
- Not specified
12.4 — Mobility in soil
- Mobility in soil
- Not specified
12.6 — Other adverse effects
- Environmental precautions
- Not specified
13.1 — Waste treatment methods
- Additional Info
- Dispose of contents/container in accordance with local, regional, national and international regulations.
14.1 — UN number
- UN-No. (ADR)
- UN 1492
- UN-No. (IMDG)
- UN 1492
- UN-No. (IATA)
- UN 1492
- UN-No. (ADN)
- UN 1492
- UN-No. (RID)
- UN 1492
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Potassium Persulfate
- Proper Shipping Name (IMDG)
- Potassium Persulfate
- Proper Shipping Name (IATA)
- Potassium Persulfate
- Proper Shipping Name (ADN)
- Potassium Persulfate
- Proper Shipping Name (RID)
- Potassium Persulfate
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 5.1
14.4 — Packing group
- Packing group (ADR)
- III
- Packing group (IMDG)
- III
- Packing group (IATA)
- III
- Packing group (ADN)
- III
- Packing group (RID)
- III
14.5 — Environmental hazards
- Dangerous for the environment
- Not specified
- Marine pollutant
- Not specified
- Other information
- No supplementary information available
15.1 — Safety, health and environmental regulations/legislation specific for the substance or mixture
- 15.1.1 EU-Regulations
- Not specified
Potassium persulfate is primarily used as a radical polymerization initiator in emulsion polymerization processes, which are critical in the production of various plastics and synthetic rubbers. It is also employed as an oxidizing agent in analytical chemistry, particularly in redox titrations and the determination of certain metal ions. Additionally, it finds applications in the textile industry for bleaching and in the electronics industry for etching processes. Its strong oxidizing properties make it useful in water treatment applications as well, where it can help in the removal of contaminants.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL01258
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 270.32 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay | ≥ 98% | 98.5% |
| Moisture Content | ≤ 0.5% | 0.3% |
| Residue on Ignition | ≤ 0.1% | 0.05% |
| Related Substances | None detected | None detected |
| Solubility | 10 g/100 mL in water at 25 °C | 10 g/100 mL |
The above product is expected to comply with 98% grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 98% | ≥ 98% | 120 °C (decomposes) | ≤ 0.5% | ≤ 0.1% | None detected | 10 g/100 mL in water at 25 °C |
Related Products
View AllWhy buy from Alpha Chemika
What Our Scientific & Industrial Customers Say
“Speedy delivery, professional staff.”
“One shop stop for all laboratory chemicals requirements.”
“Exactly as advertised.”
“Alpha Chemika products are of excellent quality. Highly satisfied.”
“From ordering to shipping, every course of action was smooth. Timely delivery.”
“Completely satisfied with the products and services.”
“Speedy delivery, professional staff.”
“One shop stop for all laboratory chemicals requirements.”
“Exactly as advertised.”
“One shop stop for all laboratory chemicals requirements.”
“Exactly as advertised.”
“Alpha Chemika products are of excellent quality. Highly satisfied.”
“Exactly as advertised.”
“Alpha Chemika products are of excellent quality. Highly satisfied.”
“From ordering to shipping, every course of action was smooth. Timely delivery.”
“Alpha Chemika products are of excellent quality. Highly satisfied.”
“From ordering to shipping, every course of action was smooth. Timely delivery.”
“Completely satisfied with the products and services.”
“From ordering to shipping, every course of action was smooth. Timely delivery.”
“Completely satisfied with the products and services.”
“Speedy delivery, professional staff.”
“Completely satisfied with the products and services.”
“Speedy delivery, professional staff.”
“One shop stop for all laboratory chemicals requirements.”
FAQs
Common Questions About Laboratory Chemicals & Solutions
Find answers to common questions about laboratory chemicals, product selection, documentation, ordering, and technical support. Whether you are sourcing chemicals for research, testing, education, manufacturing, or industrial applications, these FAQs can help you make informed purchasing decisions.
Alpha Chemika offers a wide range of laboratory chemicals, reagents, solvents, and specialty products for research, testing, educational, pharmaceutical, and industrial applications.
Product selection depends on factors such as application, required purity, grade, specifications, and intended use. Our team can help you identify suitable products based on your technical requirements.
Yes. Relevant product information and technical documentation can be provided to help you evaluate products for quality, handling, compliance, and application requirements.
Yes. You can share your product list, required quantities, specifications, and delivery requirements with our team for a tailored quotation.
Yes. We support requirements from research laboratories, educational institutions, pharmaceutical companies, manufacturers, distributors, and other scientific and industrial organizations.
Connect with Us for Your Requirements
Have a specific product requirement or need help finding the right chemical for your application? Share your requirements with our team, and we will help you identify suitable products, specifications, quantities, and procurement options.
