Sodium chloride vs potassium chloride
Sodium chloride (ClNa, CAS 7647-14-5) and potassium chloride (ClK, CAS 7447-40-7) are both listed under chlorides and other halides.
Sodium chloride has a molar mass of 58.44 g/mol, potassium chloride 74.55 g/mol.
Measured boiling points are 1,465 °C for sodium chloride and 1,500 °C for potassium chloride.
Sodium chloride carries the GHS signal word Danger, while no signal word is recorded for potassium chloride in our records.
On CompoundList, 587 suppliers list sodium chloride and 588 suppliers list potassium chloride.
Data last updated 7 October 2026
 |  | |
|---|---|---|
| Identity | ||
| Name in our database | Sodium chloride | Potassium chloride |
| CAS number | 7647-14-5 | 7447-40-7 |
| Molecular formula | ClNa | ClK |
| Molar mass | 58.44 g/mol | 74.55 g/mol |
| IUPAC name | sodium chloride | potassium chloride |
| EC number | 231-598-3 | 231-211-8 |
| Physical properties | ||
| Appearance | Colorless, transparent crystals or white, crystalline powder | White crystals or crystalline powder |
| Melting point | 800.7 °C | 771 °C |
| Boiling point | 1,465 °C | 1,500 °C |
| Density | Enthalpy of formation: -410.9 kJ/mol at 25 °C, Density of molten sodium chloride at 850 °C: 1.549 g/cm³, latent heat of fusion: 0.52 kJ/g | 1.988 g/cm³ |
| Solubility | 36.0 g/100 g of water at 25 °C | In water, 35.5 g/100 g water at 25 °C |
| LogP (octanol/water)Computed from the structure | -5.99 | -5.99 |
| Safety (GHS) | ||
| Signal word | Danger | None |
| Pictograms | None | |
| Hazard statements |
| No hazard statements recorded |
| Uses and classification | ||
| Uses and functions |
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| Category | Inorganic chemicals › Chlorides and other halides | Inorganic chemicals › Chlorides and other halides |
| HS code | 250100Salt (including table salt and denatured salt) and pure sodium chloride, whether or not… | 310420Potassium chloride |
| Market on CompoundList | ||
| Suppliers | 587 suppliers | 588 suppliers |
| Supplier countries | 71 countries, most in India, United States, China | 63 countries, most in India, United States, China |
| Price rangeOnly prices set by suppliers who manage their own profile | Price on request | Price on request |
Measured and computed values as shown on each chemical page, plus live listings on CompoundList. Details may have changed, please confirm them with the supplier. Safety data is a summary, not an SDS.
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