Sodium nitrate (NaNO3) is a white crystalline inorganic salt with strong oxidizing properties. Also known as Chile saltpeter or nitrate of soda, it is one of the most versatile industrial chemicals, serving as a raw material across agriculture, food processing, glass manufacturing, metallurgy, pyrotechnics, and chemical synthesis. It is highly soluble in water (900 g/L at 20°C), easily deliquescent, and decomposes above 380°C releasing oxygen.
We supply sodium nitrate in three grades: technical/industrial grade (≥ 98.5%), high-purity grade (≥ 99.3%), and food grade (E251). Available in both powder and granular forms to suit different processing requirements. Typical applications range from nitrogen fertilizer for acidic soils to glass clarifying agent, metal heat treatment baths, and food preservative for cured meats.
| Molecular Formula | NaNO3 |
| Molecular Weight | 84.99 g/mol |
| Appearance | Colorless transparent or white crystalline powder |
| Odor | Odorless |
| Taste | Slightly bitter and salty |
| Density | 2.26 g/cm3 at 20°C |
| Melting Point | 306.8°C |
| Boiling Point | 380°C (decomposes to NaNO2 + O2) |
| Solubility in Water | 900 g/L at 20°C; highly soluble |
| Solubility (other) | Soluble in liquid ammonia; slightly soluble in glycerol and ethanol |
| pH (10% solution) | 7.0-8.0 (neutral to weakly alkaline) |
| Hygroscopicity | Highly deliquescent, especially with trace NaCl impurities |
| Product Name | Sodium Nitrate |
| Other Names | Chile Saltpeter, Nitrate of Soda, NOP |
| CAS Number | 7631-99-4 |
| EINECS Number | 231-554-3 |
| HS Code | 31025000 (fertilizer) / 28341010 (industrial) |
| Purity (NaNO3, dry basis) | ≥ 99.0% (Industrial) / ≥ 99.3% (High Purity) / ≥ 98.5% (Qualified) |
| Sodium Nitrite (NaNO2) | ≤ 0.02% (High Purity) / ≤ 0.15% (Qualified) |
| Chloride (as NaCl) | ≤ 0.25% (Superior) / ≤ 0.30% (First Class) |
| Sodium Carbonate (Na2CO3) | ≤ 0.05% (Superior) / ≤ 0.10% (First Class) |
| Water Insoluble Matter | ≤ 0.03% (Superior) / ≤ 0.06% (First Class) |
| Iron (Fe) | ≤ 0.005% |
| Moisture | ≤ 1.0% (Superior) / ≤ 2.0% (Qualified) |
| Grade | Industrial Grade / Food Grade (E251) / Fertilizer Grade |
| UN Number | UN 1498 |
| Hazard Class | 5.1 (Oxidizing Substance) |
| Packing Group | III |
| Package Type | PP woven bag with inner PE liner / IBC jumbo bag |
| Net Weight | 25 kg / 50 kg / 1000 kg jumbo bag |
| Container Loading | ~20-25 MT per 20ft container |
| Labeling | Class 5.1 hazard label, UN 1498 marking |
| Shelf Life | 24 months (store below 30°C, RH < 50%) |
Sodium nitrate is a Class 5.1 oxidizer. It can intensify fires and may explode when mixed with combustible materials, organic substances, reducing agents, or ammonium compounds. Store in a cool, dry, well-ventilated warehouse (temperature ≤ 30°C, relative humidity < 50%), away from flammables, acids, and cyanides. Keep containers sealed to prevent moisture absorption and caking. Incompatible with strong acids, ammonium salts, cyanides, and metal powders.
Q: What is the difference between industrial grade and food grade sodium nitrate?
Food grade (E251) meets strict purity standards for heavy metals, arsenic, and microbial limits as required by food safety regulations (FDA, EFSA). Industrial grade has the same chemical purity but may not meet food-grade certification requirements.
Q: Do you provide REACH registration?
Yes, our sodium nitrate is REACH-registered for EU market access. We provide REACH certification upon request.
Q: Can you supply both powder and granular forms?
Yes, both forms are available. Granular is preferred for fertilizer applications; powder is preferred for industrial and food processing. Custom particle size available for bulk orders.
