Sodium fluoride
General Product Information
| Article | Sodium fluoride |
| Synonyms | – |
| CAS No. | 7681-49-4 |
| EEG No. | 009-004-00-7 |
| EINECS No. | 231-667-8 |
| IMO | Class 6.1 |
| Tariff Code | 28261910 |
| UN No. | 1690 |
| VLG/ADR | Class 6.1, Packing Group III |
Description
Sodium fluoride is an inorganic salt consisting of sodium and fluoride ions. It comes as a white, crystalline powder, which is highly soluble in water. It is used commercially in various industries, including the metalworking and chemical industries.
Characteristics
- Odor: Odorless.
- Hygroscopic: –
- Color: White.
- Grade: Technical.
- Solubility: Highly soluble in water; insoluble in ethanol.
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure | NaF |
| Molar Weight | 41.99 g/mol |
| Melting Point | 993 °C |
| Boiling Point | 1704 °C |
| Density | Approx. 2.56 g/cm³ (at 20 °C). |
| Refractive Index | – |
| pH | 8-9 (on 4% solution) |
Applications
Sodium fluoride is applied in various ways, for instance:
1. Chemical Industry
Raw material for the synthesis of other fluorine compounds, such as fluorosilicates.
2. Metal Industry
Used as a fluxing agent at soldering, welding and in surface treatment of metals.
3. Glass & Ceramics Industry
Applied as a matting agent and melting agent.
Interessing Links
- CAS Common Chemistry – Sodium Fluoride
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Sodium Fluoride – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Sodium fluoride