Potassium nitrate


Product name: Potassium nitrate
Molecular formula: KNO3
Molecular weight:  101.10
CAS NO.: 7757-79-1
Properties and uses:

Potassium nitrate, also known as saltpeter or niter, is a compound with the chemical formula KNO3. Potassium nitrate is colorless or white crystal, easily soluble in water. It has a salty taste and is odorless. Often used for a variety of purposes.

Agricultural Fertilizer: Potassium nitrate is used as a fertilizer in agriculture. It provides plants with essential nutrients, including potassium and nitrogen, promoting healthy growth and increasing crop yields.

Food preservatives: Used in food preservation, especially in the curing of meats and in the production of certain types of cheese. Its antibacterial properties help extend the shelf life of food.

Pyrotechnics: Potassium nitrate is a key ingredient in fireworks and pyrotechnic compositions because it acts as an oxidizing agent when combined with other substances, producing colorful displays.

Gunpowder: Historically, it has been an important component of gunpowder, used in firearms, cannons, and other explosive devices. Although its use in this regard has declined, it played a vital role in the development of explosives.

Safety Considerations: Potassium nitrate is generally safe when used as intended. However, it should be handled with care and stored away from incompatible substances, as it can react with certain chemicals and potentially pose hazards. Additionally, large-scale exposure or ingestion can have adverse health effects.

Standard: GB/T1918-2021(for industrial use)

Appearance/White or colorless crystals
Potassium dihydrogen phosphate≥%99.4
Nitrogen (nitro state)≥%13.5
Potassium oxide≥%46.0
Moisture content≤%0.2
Water insoluble matter≤%0.1
Solubility (at 22 ℃)g/L300.0
Soluble salt concentration (1 g/L 20℃)mS/cm1.081


Standard: GB/T20784-2018(for agricultural use)

 IndicatorsUnitPremium ProductFirst-class productSecond-class product
Appearance/White or colorless crystals
Potassium oxide≥%46.044.544.0
Total nitrogen≥%13.513.513.0
Chloride ion≤%
Moisture content≤%
Water insoluble matter≤%



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