Overview
Sodium fluoride (CAS 7681-49-4 ), also sold under the name Floridine, is an inorganic salt sourced for its biocidal, flux, and fluoridating properties across industrial and pharmaceutical supply chains.
NaF functions as a preservative, pH buffer, and fluoride source in applications ranging from water treatment to pharmaceutical manufacturing. In water treatment, NaF is dosed as a fluoridation agent.
This chemical is used to adjust fluoride levels in municipal drinking water systems. Pharmaceutical and oral care formulators use it as the active fluoride source in toothpaste, mouth rinse, and topical dental preparations.
In the textile, leather, and paper industries, it acts as a preservative and biocide to prevent microbial degradation during processing and storage. This ensures long-term stability for various raw materials.
Building and construction applications include its use as a flame retardant additive and wood preservative treatment against fungi and insects. It provides essential protection for structural components.
Sodium fluoride is available as a white crystalline powder or fine granules. Standard supply grades include USP , BP , and Ph. Eur. for pharmaceutical applications, alongside technical grade for industrial use.
Purity levels typically range from 97% technical grade up to 99%+ for pharmaceutical-grade material. These high standards ensure the product meets the rigorous demands of global chemical manufacturing.
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Physical Properties
| Melting Point | 993 °C |
| Boiling Point | 1704 °C |
| Density | 2.78 g/cm³ |
| Flash Point | 1704°C |
| Appearance | Sodium fluoride is a white powder or colorless crystals. Often used in a solution. Odorless. Pesticide grade is often dyed blue. |
| Color | White to off-white |
| Odor | Odorless |
| Form | powder |
| Water Solubility | 4 g/100 mL (25 ºC) |
| Vapor Pressure | 1.4 mm Hg ( 0 °C) |
| Refractive Index | 1.336 |
| pH | 7.0-10.0 (25℃, 0.5M in H2O) |
Safety & Handling
Danger GHS06 GHS07 GHS05 GHS08 Hazard Statements H301 Toxic if swallowed H314 Causes severe skin burns and eye damage H315 Causes skin irritation H318 Causes serious eye damage H319 Causes serious eye irritation H341 Suspected of causing genetic defects H361 Suspected of damaging fertility or the unborn child H370 Causes damage to organs H372 Causes damage to organs through prolonged or repeated exposure H373 May causes damage to organs through prolonged or repeated exposure H402 Harmful to aquatic life Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P363 Wash contaminated clothing before reuse. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P316 Get emergency medical help immediately. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P308+P316 Get emergency medical help immediately. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P301+P330+P331 Rinse mouth. Do NOT induce vomiting. P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 28261900 |
| UN Number | 1690 |
| ADR Class | 6.1 |
| Packing Group | III |
| Storage Class | 6.1D - Non-combustible acute toxic Cat.3 toxic hazardous materials or hazardous materials causing chronic effects |
| WGK (Germany) | 1 |
Other Names
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Chemical Properties
- CAS Number
- 7681-49-4
- EC Number
- 231-667-8
- Mol. Weight
- 41.9881724
- HS Code
- 28261900
- Category
- Flame Retardants