Sodium nitrite
General Product Information
| Article | Sodium nitrite |
| Synonyms | Lodic acid, Potassium salt |
| CAS No. | 7632-00-0 |
| EEG No. | 007-010-00-4 |
| EINECS No. | 231-555-9 |
| IMO | Class 5.1+6. |
| Tariff Code | 28341000 |
| UN No. | 1500 |
| VLG/ADR | Class 5.1, Packing Group III |
Description
Sodium nitrite is an inorganic salt, Highly soluble in water. It comes as a white to pale yellow crystalline powder. As a powerful oxidizer, sodium nitrite is widely used in, among others, Chemical Industry, Water Treatment and Metalworking. .
Characteristics
- Odor: –
- Hygroscopic: –
- Color: White to light yellow.
- Grade: Technical.
- Solubility: Highly soluble in water.
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure | NaNO2 |
| Molar Weight | 69.00 g/mol |
| Melting Point | Approx. 271 °C (decomposes). |
| Boiling Point | – |
| Density | – |
| Refractive Index | – |
| pH | Approx. 8-9 (on 1% solution). |
Applications
Sodium nitrite is applied in various ways, for instance:
1. Chemical Industry
For the production of dyes, rubber chemicals and pesticides.
2. Laboratories
Reagent for detection of amines and at redox reactions.
3. Water Treatment & Corrosion Protection
As an oxygen inhibitor to prevent corrosion in pipes. Corrosion inhibitor in closed cooling water systems, boiler systems and antifreeze solutions.
4. Textile Industry
For bleaching and dyeing fabrics.
5. Metal Industry
At pickling and passivation of stainless steel.
Interessing Links
- CAS Common Chemistry – Sodium Nitrite
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Sodium Nitrite – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Sodium nitrite