Key Properties of Potassium Nitrate

Product Name: | Potassium Nitrate |
Synonyms: | Saltpeter, Niter |
CAS No: | 7757-79-1 |
Chemical Formula: | KNO₃ |
Grade: | IP / BP / USP |
Appearance: | White, crystalline powder or granules |
Molar Mass: | 101.10 g/mol |
Solubility: | Freely soluble in water, insoluble in alcohol |
Melting Point: | 334°C |
Manufacturing process of Potassium Nitrate
Step 1: Raw Material Selection
- High-purity potassium chloride and nitric acid are selected.
- Raw materials undergo strict quality checks for purity.
Step 2: Chemical Reaction & Processing
- Potassium chloride reacts with nitric acid to form Potassium Nitrate solution.
- The solution is filtered and refined to remove impurities.
Step 3: Crystallization & Drying
- The solution is evaporated, crystallized, and dried to achieve the required purity.
Step 4: Quality Control & Testing
- The product is tested for assay, solubility, moisture content, and pH as per IP/BP/USP standards.
Step 5: Packaging & Storage
- Packed in HDPE bags or fiber drums to prevent contamination.
- Stored in a cool, dry place to maintain stability.
Applications of Potassium Nitrate
Technical Specifications of Potassium Nitrate
Sr. No. | Test | Specification |
---|---|---|
1 | Description | White, crystalline powder or granules |
2 | Assay (Purity) | Not less than 99.0% |
3 | Loss on Drying | Not more than 0.5% |
4 | pH (5% solution) | 5.0 – 7.0 |
5 | Solubility | Freely soluble in water |
6 | Chloride (Cl⁻) | Not more than 50 ppm |
7 | Sulphate (SO₄²⁻) | Not more than 150 ppm |
8 | Heavy Metals | Not more than 10 ppm |
9 | Iron (Fe) | Not more than 5 ppm |
10 | Lead (Pb) | Not more than 3 ppm |
11 | Arsenic (As) | Not more than 2 ppm |
12 | Residue on Ignition | Not more than 0.05% |
Packing and Storage condition of Potassium Nitrate
Packing:
- Packed in 25 kg / 50 kg HDPE bags with inner LDPE liner for moisture protection.
- Available in fiber drums or plastic drums for high-purity grades.
- Bulk packaging in jumbo bags (500 kg – 1000 kg) available upon request.
- Custom packaging options as per client requirements.
Storage Conditions:
- Store in a cool, dry, and well-ventilated area away from direct sunlight.
MSDS - Potassium Nitrate
Why Choose Chemignition for
Potassium Nitrate Supply?
Quality Assurance
Grade Compliance
Potassium Nitrate is manufactured in adherence to stringent global pharmaceutical standards.
In-House Quality Control
Each batch undergoes rigorous testing for purity, stability, and efficacy.
Regulatory Approvals
Certified for export and compliant with international regulatory requirements.
Large-Scale Manufacturing and Export
Grade Compliance
Potassium Nitrate is manufactured in adherence to stringent global pharmaceutical standards.
In-House Quality Control
Each batch undergoes rigorous testing for purity, stability, and efficacy.
Regulatory Approvals
Certified for export and compliant with international regulatory requirements.