Potassium nitrate
Potassium nitrate (KNO₃) is widely used in agriculture as a high-quality fertilizer, providing both potassium and nitrogen—essential nutrients for plant growth. It is also used in the food industry as a preservative and curing agent (E252), helping to prevent bacterial growth and maintain the natural color of processed meats, and in the chemical industry as an oxidizing agent and a source of nitrate ions. Additional applications include thermal energy storage, certain metal treatment processes, and use as an active ingredient in toothpaste for sensitive teeth.
We offer potassium nitrate in both food grade and technical grade, available with or without anti-caking agents, to meet the requirements of different applications.
Details
Chemical Formula
KNO3
EC Number
231-818-8
CAS Number
7757-79-1
Industries
- Industry Chemicals
Applications
- Agriculture
- Dental care
- Food additive
Specification
- Appearance: Fine white crystals
- Taste: Cooling, saline, pungent
- Odour: Odourless
- pH (5% solution): 4.5 - 8.5
- Content KNO₃: >99.5% (on the anhydrous basis)
- Loss on drying: <1% (105°C, 4 hours)
- Nitrites: <20 mg/kg expressed as KNO₂
- Arsenic: <0.1 mg/kg
- Lead: <0.1 mg/kg
- Mercury: <0.1 mg/kg
- Ethylene oxide residue: <0.1 mg/kg
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