Potassium Nitrate

CAS Number

7757-79-1

Molecular Formula

KNO3

Also known as:

KNO3, Saltpeter, Nitrate of potash, Nitre, Vesta.

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Product Description

Product Introduction

Potassium Nitrate (CAS 7757-79-1), chemically represented as KNO3, is an inorganic salt that appears as a white to off-white crystalline powder or granular solid. Known historically as Saltpeter, it is a powerful oxidizing agent. Potassium Nitrate (CAS 7757-79-1) is utilized across a vast array of industries due to its unique chemical properties, including its ability to provide oxygen for combustion, its role as a high-efficiency nitrogen and potassium source in agriculture, and its critical function in the manufacturing of specialty glass and ceramics.

Product Selling Points

  • High Purity Grades: Chemfine offers Technical Grade (≥ 99.8%) and Agricultural Grade to meet diverse industrial requirements.

  • Superior Solubility: Dissolves quickly and completely in water, making it ideal for liquid fertilizer formulations and industrial baths.

  • Low Impurity Profile: Strictly controlled levels of chlorides, sulfates, and insoluble matter to prevent contamination in sensitive glass and chemical processes.

  • Excellent Thermal Stability: Remains stable at high temperatures, serving as an effective medium for heat transfer and energy storage.

  • Anti-Caking Formulation: Our industrial grade is treated with anti-caking agents to ensure free-flowing properties during long-term storage and handling.

  • Versatile Functionality: Acts as an oxidizer, a preservative, a color stabilizer, and a nutrient source depending on the application.


Applications

Glass and Ceramics Manufacturing Essential for the production of high-quality glass, including mobile phone screens and optical lenses, where it acts as a fining agent and provides chemical strengthening (ion exchange).

Metal Treatment and Surface Finishing Used in salt baths for the heat treatment of metals, as well as in blackening and pickling processes for steel and aluminum.

Energy Storage (Solar Thermal) Functions as a component of molten salt mixtures (with sodium nitrate) for thermal energy storage in concentrated solar power (CSP) plants.

Agriculture and Horticulture A premium, chloride-free source of nitrogen and potassium for high-value crops, greenhouse production, and fertigation systems.

Pyrotechnics and Specialized Explosives A traditional and reliable oxidizer used in the manufacture of black powder, fireworks, and safety matches.

Food Preservation Used in the curing of meats to prevent bacterial growth and maintain color (Food Grade E252).


Packaging

Standard industrial packaging options for Potassium Nitrate include:

  • 25kg or 50kg woven PP bags with PE inner liners (Standard industrial packaging).

  • 1000kg or 1200kg Jumbo bags (FIBC) for large-scale industrial use.

  • Customized moisture-proof packaging is available for long-distance maritime transport.

  • All packaging includes appropriate Oxidizer (Class 5.1) labeling for safe handling and compliance.


Storage

Potassium Nitrate is a strong oxidizer. It must be stored in a cool, dry, and well-ventilated warehouse. Keep away from heat, sparks, and open flames. Store separately from combustible materials, reducing agents, strong acids, and organic substances to prevent fire hazards. Avoid physical damage to packaging to prevent moisture absorption. Properly stored in a dry environment, it has a shelf life of 24 to 36 months.

Technical Parameters

Parameter Value
Appearance White Crystals
Assay (KNO3) ≥ 99.70%
Moisture ≤ 0.10%
Chlorides (as Cl) ≤ 0.01%
Sulfates (as SO4) ≤ 0.01%
Water Insolubles ≤ 0.02%
Iron (Fe) ≤ 0.003%

Applications

Plasticizers/Dispersing Agents

Quick Information

EINECS 231-818-8
Molecular Weight 101.10 g/mol

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