Molekula
Potassium permanganate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Potassium permanganate is a strong oxidizing agent used in water treatment, disinfection, and organic synthesis. It appears as dark purple crystals and dissolves in water to form a distinctive pink-purple solution. Available in powder and crystal forms, it is stable at ambient temperatures. CAS: 7722-64-7, Molecular formula: KMnO4, Molecular weight: 158.03 g/mol.
Molekula supplies Potassium permanganate at ≥99.3% purity in 100 g, 250 g and 500 g packs, from £29.76 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 5 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £24.80 per pack ex VAT · £29.76 inc. VAT
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250 g — £40.00 per pack ex VAT · £48.00 inc. VAT
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500 g — £46.50 per pack ex VAT · £55.80 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Solid |
| Assay/Purity | ≥99.3% |
| Chloride (Cl-) | ≤0.01% |
| Moisture | ≤0.5% |
| Water insoluble matter | ≤0.15% |
| Sulphates (SO4)(2-) | ≤0.05% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 5.1 |
| Packing Group | II |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Purple orthorhombic crystals |
| Odour | Odorless |
| Density | 2.7 g/cm³ |
| Water Solubility | 64 g/L at 20 °C |
| Solubility (other solvents) | Soluble in many organic solvents; also by concentrated acids with the liberation of oxygen |
| Refractive Index | 1.59 |
Source: PubChem CID 516875 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 14839673 |
| CAS Number | 7722-64-7 |
| IUPAC Name | potassium permanganate |
| EC Number | 231-760-3 |
| Molecular Formula | KMnO4 |
| Molecular Weight | 158.03 |
| Exact Mass | 157.8814 |
| SMILES | [O-][Mn](=O)(=O)=O.[K+] |
| InChIKey | VZJVWSHVAAUDKD-UHFFFAOYSA-N |
| InChI | InChI=1S/K.Mn.4O/q+1;;;;;-1 |
| PubChem CID | 516875 |
| UN Number | UN1490 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| Tariff Code | 28416100 |
Safety & GHS
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Oxidizing
GHS03
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Corrosive
GHS05
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- H272 May intensify fire; oxidizer
- H302 Harmful if swallowed
- H314 (sub cat. 1C) Causes severe skin burns and eye damage
- H361d Suspected of damaging fertility. Suspected of damaging the unborn child.
- H373 May cause damage to organs through prolonged or repeated exposure
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P201 Obtain special instructions before use
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P220 Keep/Store away from clothing/combustible materials
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- Algae-K
- Argucide
- Cairox
- Chameleon mineral
- Condy's crystals
- Insta-perm
- Permanganate of potash
- Pure Light E 2
- Solo San Soo
- Walko Tablets
Frequently asked questions
What is potassium permanganate used for?
It is commonly used as an oxidizing agent in water treatment, disinfection, and organic synthesis.
What is the chemical formula and molecular weight of potassium permanganate?
The formula is KMnO4 with a molecular weight of 158.03 g/mol.
How should potassium permanganate be stored?
Store at ambient temperature, away from moisture and incompatible materials.
What grade is available for potassium permanganate?
Our potassium permanganate is specified at an assay/purity of ≥99.3%, with limits of ≤0.01% chloride, ≤0.05% sulphates, ≤0.5% moisture and ≤0.15% water insoluble matter.
Can Molekula supply potassium permanganate in bulk?
Yes, we can supply potassium permanganate in bulk quantities upon request.
What documentation comes with a purchase of potassium permanganate?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) with the shipment.
Where can I buy Potassium permanganate?
Directly from Molekula, which lists Potassium permanganate in 100 g, 250 g and 500 g packs from £29.76 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Is Potassium permanganate dangerous goods for shipping?
Yes. Potassium permanganate ships as dangerous goods: UN1490, class 5.1, packing group II.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.