Nitric acid 69%
| Density: | ~ 1.41 g/m3 (20 °C) |
| HS code: | 28080000 |
| Storage (temperature): | store at +2°C to +25°C |
| SDS: | available |
| R phrase: | R35 |
| S phrase: | S 23.2-26-36/37/39-45 |
| Odour: | pungent |
| Form: | liquid |
| Color: | colourless |
| Solubility in water: | (20 °C) soluble |
| Boiling point: | 122 °C |
| Melting point: | ~ -41°C |
| Vapour pressure: | ~ 9.4 hpa(20 °C) |
| Assay | 68.0-71.0 | % | |
| Description | Conforms | ||
| Identification | Conforms | ||
| Chloride | ≤ | 0.0005 | % |
| Sulfate | ≤ | 0.001 | % |
| Heavy metals | ≤ | 0.0002 | % |
| Iron | ≤ | 0.001 | % |
| Residue on ignition | ≤ | 0.01 | % |
Nitric acid 69% is a concentrated aqueous solution of nitric acid widely used in industrial processes, chemical synthesis, and laboratories.
🏭⚗️ Production
Nitric acid is industrially produced by the Ostwald process, which involves the catalytic oxidation of ammonia to nitrogen monoxide, followed by further oxidation and absorption in water. The 69% solution is obtained by concentrating the acid via distillation under controlled conditions.
🔬 Properties
Nitric acid 69% appears as a colorless to yellowish corrosive liquid with a pungent, acrid odor. Its chemical formula is HNO₃, and it has a molar mass of 63.01 g/mol. It is highly soluble in water, strongly acidic, and a powerful oxidizing agent.
🧪 Applications
It is extensively used in fertilizer production (e.g., ammonium nitrate), explosives manufacturing, metal etching, and nitration reactions in chemical synthesis.
⚠️ Safety
Nitric acid 69% is highly corrosive and toxic. It can cause severe burns upon contact with skin and eyes, and inhalation of fumes can damage respiratory tissues. Handling requires gloves, goggles, protective clothing, and proper ventilation. It should be stored in corrosion-resistant containers away from organic materials, reducing agents, and heat sources.
