Sodium fluoride
FNa
sodium fluoride
Consulting for Sodium fluoride
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Identification
- CAS Number
- 7681-49-4
- EC Number
- 231-667-8
- UN Number
- 1690
- Index Number
- 009-004-00-7
- PubChem CID
- 5235
Physical-chemical properties
- Molecular Formula
- FNa
- Molar Mass
- 41.99 g/mol
- IUPAC Name
- sodium fluoride
Chemical Identifiers
- InChI
- InChI=1S/FH.Na/h1H;/q;+1/p-1
- InChI Key
- PUZPDOWCWNUUKD-UHFFFAOYSA-M
Overview
Sodium fluoride (CAS 7681-49-4) is an inorganic sodium salt compound with high solubility in water and significant biological activity. This crystalline white solid represents one of the most commercially important fluoride compounds in industrial chemistry. With the molecular formula FNa and a molecular weight of 41.99 g/mol, sodium fluoride exhibits excellent water solubility and forms clear, colorless solutions. The compound's ionic structure contributes to its stability under normal storage conditions, though it requires careful handling due to its toxicological properties. From a safety perspective, sodium fluoride is classified under GHS pictogram GHS06 with the signal word "Danger," reflecting its acute toxicity classification (Acute Tox. 3). The substance can cause skin and eye irritation (Skin Irrit. 2; Eye Irrit. 2) and falls under ADR transport class 6.1 for toxic substances. Proper personal protective equipment and ventilation systems are essential when handling this material, as exposure can lead to serious health effects. Unlike organic compounds such as N-methylaniline or phenylhydrazine, sodium fluoride's inorganic nature presents different toxicological pathways and requires specific safety protocols. Industrial applications of sodium fluoride span multiple sectors, including water fluoridation systems where it serves as a dental health additive, metallurgical processes for aluminum production, and as a preservative in wood treatment formulations. The pharmaceutical industry also utilizes high-purity grades for specific synthetic applications. OYSI maintains reliable stocks of technical-grade sodium fluoride to support European industrial customers with consistent quality and regulatory compliance documentation.
Safety & Classification
Acute Tox. 3 *; Skin Irrit. 2; Eye Irrit. 2
GHS Pictograms
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).
First Aid Measures
Skin Contact
Measures if substance contacts the skin
First Aid Actions
- +P302IF ON SKIN:
- +P352Wash with plenty of water.
- +P361Take off immediately all contaminated clothing.
- +P313Get medical advice/attention.
Related hazard statements:
Eye Contact
Measures if substance gets into the eyes
First Aid Actions
- +P305IF IN EYES:
- +P351Rinse cautiously with water for several minutes.
- +P338Remove contact lenses, if present and easy to do. Continue rinsing.
- +P313Get medical advice/attention.
Related hazard statements:
Ingestion
Measures if substance is accidentally swallowed
First Aid Actions
- +P301IF SWALLOWED:
- +P330Rinse mouth.
- +P331Do NOT induce vomiting.
- +P310Immediately call a POISON CENTER/doctor.
Related hazard statements:
General Measures
Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)
First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.
Transport (ADR)
| UN Number | 1690 |
| ADR Class | 6.1 |
| Packing Group | III |
| Tunnel Code | E |
| Proper Shipping Name | Natriumfluorid, fest |
| Marine Pollutant | No |
Frequently Asked Questions
What is sodium fluoride?
Sodium fluoride is an inorganic compound with the chemical formula FNa (CAS: 7681-49-4) and a molecular weight of 41.99 g/mol. This white crystalline solid is widely used in various industrial applications and is classified as a toxic substance requiring careful handling. It belongs to the fluoride family of compounds and exhibits high water solubility, making it effective in numerous chemical processes.
What are the physicochemical properties of sodium fluoride?
Sodium fluoride appears as a white, odorless crystalline powder or solid at room temperature. It is highly soluble in water, forming clear solutions, and has a molecular weight of 41.99 g/mol. The compound is stable under normal conditions but can react with acids to release hydrogen fluoride gas. It has a high melting point and maintains its crystalline structure in dry environments.
What is sodium fluoride used for?
Sodium fluoride serves multiple industrial and commercial purposes, including water fluoridation systems, metal surface treatment, glass and ceramic production, and as a flux in metallurgy. It is also used in the manufacture of pesticides, wood preservatives, and specialized cleaning agents. In laboratory settings, it functions as a reagent for various analytical procedures and chemical syntheses.
How to handle sodium fluoride safely?
Sodium fluoride requires careful handling due to its Acute Tox. 3 classification and skin/eye irritation properties. Essential PPE includes chemical-resistant gloves, safety goggles, and protective clothing. Work in well-ventilated areas or under fume extraction systems. Avoid inhalation, skin contact, and ingestion. Wash hands thoroughly after handling and ensure emergency shower/eyewash stations are accessible in the work area.
How to store sodium fluoride correctly?
Sodium fluoride should be stored in a cool, dry, well-ventilated area away from incompatible materials such as acids and strong oxidizers. Keep containers tightly closed and labeled according to GHS requirements with appropriate danger warnings. Store away from food, beverages, and animal feed. Ensure storage areas are equipped with appropriate spill containment measures and restrict access to authorized personnel only.
What to do in case of contact with sodium fluoride?
Sodium fluoride contact requires immediate action due to its irritating properties. For skin contact, remove contaminated clothing and rinse affected area with plenty of water for at least 15 minutes. In case of eye contact, flush immediately with water for 15-20 minutes while holding eyelids open. If ingested, rinse mouth and drink water if conscious. Seek immediate medical attention in all cases of exposure.
How to dispose of sodium fluoride properly?
Sodium fluoride disposal must comply with local and European waste regulations as it is classified as hazardous waste. Contact licensed waste disposal companies for proper treatment and disposal. Never discharge into sewers, waterways, or soil. Small quantities can be neutralized under controlled conditions by qualified personnel, but industrial amounts require professional hazardous waste management services following ADR transport regulations.
How to transport sodium fluoride?
Sodium fluoride is classified under ADR as Class 6.1 (toxic substances), Packing Group III, requiring specific transport documentation and packaging. Use UN-approved packaging with proper labeling including GHS06 pictogram and danger signal word. Transport vehicles must carry appropriate emergency equipment and documentation. Only trained personnel should handle transportation, and emergency response information must be readily available during transit.
Is sodium fluoride subject to specific regulations?
Sodium fluoride is regulated under multiple European frameworks including CLP Regulation for classification and labeling, and REACH Regulation for chemical safety. It is not currently listed as a SVHC (Substance of Very High Concern). Companies must comply with safety data sheet requirements, worker protection standards, and environmental discharge limits. Some applications may require additional permits or notifications to regulatory authorities.
Where to buy sodium fluoride in Europe?
Sodium fluoride is available through OYSI, a European chemical distributor specializing in technical-grade chemicals for industrial applications. OYSI provides quality sodium fluoride with proper documentation, safety data sheets, and regulatory compliance support. As an established European supplier, OYSI ensures reliable supply chains and technical support for various industrial requirements across multiple European markets.
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Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.