【CAS】7447-40-7 Molecular formula:KCl Relative molecular mass:74.5513
Structural formula:
一．Product Property：
White crystals, extremely salty in taste, odorless and non-toxic. They are soluble in water and glycerol, slightly soluble in alcohols, and insoluble in ethers, acetone and hydrochloric acid . They have hygroscopic properties and are prone to caking; the solubility in water increases rapidly with the rise in temperature, and they often undergo double decomposition reactions with sodium salts to form new potassium salts.
二．Quality Index:
| Parameter | Unit | Requirement |
| Potassium Chloride (KCl, dry basis) | % | ≥ 99.0 |
| Moisture (H₂O) | % | ≤ 1.0 |
| Water Insoluble Matter | % | ≤ 0.1 |
| Sodium (Na) | % | ≤ 0.5 |
| Calcium (Ca) | % | ≤ 0.05 |
| Magnesium (Mg) | % | ≤ 0.05 |
| Lead (Pb) | mg/kg | ≤ 2 |
| Arsenic (As) | mg/kg | ≤ 1 |
| Iodine (I) (if added) | mg/kg | ≤ 20 |
| pH (50 g/L solution) | – | 5.0 – 8.0 |
三．Application scope and Usage：
Low-sodium foods: As a salt substitute, they are used in low-sodium salts, soy sauce and other seasonings to help reduce sodium intake.
Nutrition fortification: Adding essential potassium to infant foods, sports drinks and nutritional supplements.
四．Package and Storage：
Food-grade: Use food-grade PE inner bags combined with outer woven bags. Each bag weighs 25kg and is clearly labeled “Food Additives”
