Molekula
Potassium chloride
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
Potassium chloride (KCl) is an inorganic salt widely used in fertilizers, food processing as a salt substitute, and medical applications for electrolyte replenishment. It is also employed in water softening and as a raw material in chemical synthesis. This white crystalline solid has a CAS number of 7447-40-7, a molecular formula of KCl, and a molecular weight of 74.55 g/mol. It is stable under ambient storage conditions and carries no signal word for hazard classification. Molekula supplies potassium chloride 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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1 kg — £22.40 per pack ex VAT · £26.88 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 crystals or powder |
| Heavy metals | ≤ 0.0005% |
| Loss on Drying | ≤ 1.0% |
| Assay | ≥ 99.0% |
| Arsenic (As) | ≤ 0.0002% |
| Sodium (Na) | ≤ 0.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White crystals or crystalline powder |
| Odour | Odorless |
| Melting Point | 770 °C |
| Density | 1.988 g/cm³ |
| Solubility (other solvents) | Freely soluble in water. Insoluble in ethanol |
Source: PubChem CID 4873 (HSDB, DrugBank, EU Food Improvement Agents)
Identification
| Property | Value |
|---|---|
| SKU | 16227139 |
| CAS Number | 7447-40-7 |
| IUPAC Name | potassium chloride |
| EC Number | 231-211-8 |
| Molecular Formula | KCl |
| Molecular Weight | 74.55 |
| Exact Mass | 73.9326 |
| SMILES | [Cl-].[K+] |
| InChIKey | WCUXLLCKKVVCTQ-UHFFFAOYSA-M |
| InChI | InChI=1S/ClH.K/h1H;/q;+1/p-1 |
| PubChem CID | 4873 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| Tariff Code | 3105100090 |
Safety & GHS
Detailed safety information available in the SDS — see Documents below.
Documents
Safety Data Sheets (SDS)
Available in English, English (US), 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.
Synonyms
- Acronitol
- Chlorvescent
- Enseal
- Klor-Con
- Klotrix
- Muriate of potash
- Neobakasal
- Potavescent
- Slow-K
- Sylvite
Frequently asked questions
What is potassium chloride (KCl) commonly used for?
Potassium chloride is primarily used as a fertilizer to supply potassium to crops, as a food additive (e.g., salt substitute), and in medical applications for electrolyte replenishment.
What is the molecular formula and molecular weight of potassium chloride?
The molecular formula is **KCl**, and the molecular weight is **74.55 g/mol**.
How should potassium chloride be stored?
Store potassium chloride in a cool, dry place at **ambient temperature**, away from moisture and incompatible substances.
What grades of potassium chloride does Molekula supply?
Molekula supplies **analytical, reagent, and technical grades** of potassium chloride, depending on purity and application requirements.
Can Molekula supply potassium chloride in bulk quantities?
Yes, Molekula offers potassium chloride in bulk, with quantities tailored to meet industrial, agricultural, or research needs.
What documentation comes with a potassium chloride order?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation for 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.