Hexafluorotungsten

F6W

hexafluorotungsten

CAS7783-82-6

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Identification

CAS Number
7783-82-6
EC Number
232-029-1
UN Number
2196
PubChem CID
522684

Physical-chemical properties

Molecular Formula
F6W
Molar Mass
297.83 g/mol
IUPAC Name
hexafluorotungsten

Chemical Identifiers

InChI
InChI=1S/6FH.W/h6*1H;/q;;;;;;+6/p-6
InChI Key
NXHILIPIEUBEPD-UHFFFAOYSA-H

Overview

Hexafluorotungsten (CAS 7783-82-6) is an inorganic tungsten fluoride compound with notable chemical reactivity and specialized industrial applications. This hexavalent tungsten compound represents one of the most important fluoride derivatives in tungsten chemistry, featuring six fluorine atoms bonded to a central tungsten atom. With a molecular weight of 297.83 g/mol and the molecular formula F6W, hexafluorotungsten exhibits unique properties that distinguish it from other metal fluorides in industrial applications. The compound belongs to the broader family of transition metal halides, sharing certain characteristics with other gaseous inorganic compounds like nitrous oxide in terms of handling requirements, though differing significantly in chemical behavior and applications. As a Class 2 ADR substance, hexafluorotungsten requires specialized handling protocols and proper storage conditions to maintain its stability and prevent unwanted reactions. The compound typically appears as a colorless gas under standard conditions and demonstrates high reactivity with moisture and various organic compounds. Its hexafluoride structure provides excellent volatility characteristics, making it particularly valuable in processes requiring precise vapor-phase chemistry. The primary industrial applications of hexafluorotungsten include chemical vapor deposition processes for thin film production, specialized etching applications in semiconductor manufacturing, and as a precursor in the synthesis of advanced tungsten-containing materials. The compound also finds use in research applications involving tungsten surface modifications and in the preparation of high-purity tungsten coatings. OYSI maintains reliable supply chains for hexafluorotungsten, ensuring consistent availability for European industrial customers requiring this specialized tungsten fluoride compound.

Safety & Classification

No Hazard Classification

This substance is not classified as hazardous according to CLP Regulation (EC) No 1272/2008.

Transport (ADR)

UN Number2196
ADR Class2
Packing Group
Tunnel CodeD
Proper Shipping NameWolframhexafluorid, unter Druck verflüssigt
Marine PollutantNo

Frequently Asked Questions

What is hexafluorotungsten?

Hexafluorotungsten is an inorganic chemical compound with the molecular formula F6W and CAS number 7783-82-6. This tungsten fluoride has a molecular weight of 297.83 g/mol and represents one of the highest fluorination states of tungsten. It is a specialty chemical compound used primarily in advanced industrial applications requiring high-purity tungsten compounds with specific fluorine coordination properties.

What are the physicochemical properties of hexafluorotungsten?

Hexafluorotungsten is typically a crystalline solid at room temperature with high thermal stability. As a tungsten hexafluoride compound, it exhibits strong oxidizing properties and high reactivity with moisture. The compound has a high molecular density due to the heavy tungsten atom and forms ionic or covalent bonds depending on the chemical environment. Its fluorinated nature makes it highly electronegative and chemically aggressive.

What is hexafluorotungsten used for?

Hexafluorotungsten is primarily used in specialized industrial applications including chemical vapor deposition (CVD) processes for thin film production, as a precursor in tungsten coating applications, and in advanced materials synthesis. It serves as a fluorinating agent in organic chemistry and finds applications in electronics manufacturing where high-purity tungsten compounds are required for semiconductor and advanced alloy production.

How to handle hexafluorotungsten safely?

Hexafluorotungsten should be handled using appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid contact with skin, eyes, and clothing. Use proper handling tools and ensure no moisture contact as the compound may react with water. Follow standard laboratory safety protocols for handling reactive chemicals.

How to store hexafluorotungsten correctly?

Hexafluorotungsten should be stored in tightly sealed, moisture-proof containers in a cool, dry environment away from incompatible materials. Keep containers in a well-ventilated storage area, protected from direct sunlight and heat sources. Avoid storage near water, alcohols, or other reactive compounds. Ensure proper labeling and maintain storage temperatures according to manufacturer specifications to preserve chemical stability and prevent degradation.

What to do in case of contact with hexafluorotungsten?

In case of skin contact with hexafluorotungsten, immediately flush the affected area with plenty of water for at least 15 minutes and remove contaminated clothing. For eye contact, rinse thoroughly with clean water and seek immediate medical attention. If inhaled, move to fresh air immediately. In case of ingestion, do not induce vomiting and seek immediate medical assistance. Always consult safety data sheets for specific first aid measures.

How to dispose of hexafluorotungsten appropriately?

Hexafluorotungsten disposal must comply with local and European waste regulations for chemical substances. The compound should be treated as hazardous chemical waste and disposed of through licensed waste management facilities. Do not pour down drains or dispose of with regular waste. Contact specialized chemical waste disposal companies who can handle fluorinated compounds safely. Maintain proper documentation of disposal procedures for regulatory compliance.

How to transport hexafluorotungsten?

Hexafluorotungsten is classified under ADR Class 2 for transport purposes, indicating it falls under gases or gas-related materials regulations. Transportation requires appropriate packaging according to ADR specifications and proper labeling with relevant transport codes. Use authorized transport companies experienced in handling chemical products. Ensure proper documentation including transport permits and safety data sheets accompany shipments throughout the European transport network.

Is hexafluorotungsten subject to particular regulations?

Hexafluorotungsten is subject to standard European chemical regulations including REACH registration requirements and CLP classification standards. The substance is not currently listed as a SVHC (Substance of Very High Concern) under REACH. Users must comply with standard chemical handling regulations, workplace safety directives, and environmental protection laws. Regular regulatory updates should be monitored as classification requirements may evolve.

Where to buy hexafluorotungsten in Europe?

Hexafluorotungsten is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. OYSI provides high-quality chemical products with proper documentation and regulatory compliance. As a professional chemical supplier, OYSI ensures reliable sourcing and distribution of specialty compounds like hexafluorotungsten to meet specific industrial requirements throughout the European market.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.