Molekula
Colistin Sulfate (EP)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Colistin Sulfate (EP) is a polymyxin antibiotic derived from *Bacillus colistinus*, primarily used in veterinary medicine and human topical treatments for multidrug-resistant Gram-negative bacterial infections. It binds to bacterial cell membranes, disrupting integrity and causing cell death. This European Pharmacopoeia (EP)-grade product has a CAS number of 1264-72-8, molecular formula C52H98N16O13·H2SO4, and a molecular weight of 1253.51. Store between 2–8°C, with a signal word of *Danger* due to its toxicity. Molekula supplies Colistin Sulfate (EP) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
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 mg — £49.20 per pack ex VAT · £59.04 inc. VAT
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1 g — £103.30 per pack ex VAT · £123.96 inc. VAT
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5 g — £347.50 per pack ex VAT · £417.00 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 | White to almost white powder |
| pH | 4.0 - 6.0 |
| Loss on Drying | ≤ 3.5% |
| Solubility | Freely soluble in water, slightly soluble in ethanol (96%), practically insoluble in acetone trichloromethane or diethyl ether |
| Sulphated Ash | ≤ 1.0% |
| Specific optical rotation | -63 to -73° |
| Total Impurities | ≤ 23.0% |
| Potency (Dry Basis) | ≥ 19000 IU/mg |
| Sulphates (SO4)(2-) | 16 - 18% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 49952997 |
| CAS Number | 1264-72-8 |
| Molecular Formula | C52H98N16O13 . H2SO4 |
| Molecular Weight | 1253.51 |
| UN Number | UN2811 |
| REACH Code | Y110 |
| HTS Code | 29419010 |
| Tariff Code | 2941900000 |
Safety & GHS
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Toxic
GHS06
Hazard statements
- H301 Toxic if swallowed
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Colistin Sulfate (EP) used for?
Colistin Sulfate (EP) is primarily used as an antibiotic to treat serious Gram-negative bacterial infections, including those caused by multidrug-resistant strains like *Pseudomonas aeruginosa* and *Acinetobacter baumannii*.
What is the chemical formula and molecular weight of Colistin Sulfate (EP)?
The chemical formula is **C52H98N16O13·H2SO4**, and the molecular weight is **1253.51 g/mol**.
How should Colistin Sulfate (EP) be stored?
Store Colistin Sulfate (EP) refrigerated between **2–8°C** to maintain stability and potency.
What grade of Colistin Sulfate (EP) does Molekula supply?
Molekula supplies **European Pharmacopoeia (EP) grade** Colistin Sulfate, meeting strict pharmaceutical standards.
Can Molekula supply Colistin Sulfate (EP) in bulk quantities?
Yes, Molekula can provide Colistin Sulfate (EP) in bulk, with quantities tailored to your research, development, or manufacturing needs.
What documentation comes with an order of Colistin Sulfate (EP)?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** to ensure compliance and traceability.
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.