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Tungsten hexafluoride

CAS No.
7783-82-6
Chemical Name:
Tungsten hexafluoride
Synonyms
WF6;Tungstenfluoride;Hexafluorotungsten;TUNGSTEN(VI) FLUORIDE;TUNGSTEN HEXAFLUORIDE;Tungsten fluoride (WF6);Tungstenhexafluoride99%;Wolfram(VI)hexafluoride;Tungsten hexafluoride 99%;(oc-6-11)-tungsten fluoride
CBNumber:
CB2324737
Molecular Formula:
F6W
Molecular Weight:
297.83
MDL Number:
MFCD00040536
MOL File:
7783-82-6.mol
Last updated:2023-10-17 17:11:58

Tungsten hexafluoride Properties

Melting point 2.3 °C(lit.)
Boiling point 17.5 °C(lit.)
Density d15liq 3.441
vapor pressure 10hPa at 20℃
solubility reacts with H2O; very soluble in ctc,cyclohexane
form colorless gas
color yellow
Water Solubility decomposes
Merck 13,9885
CAS DataBase Reference 7783-82-6(CAS DataBase Reference)
FDA UNII 45B0AG2C4S
NIST Chemistry Reference Tungsten hexafluoride(7783-82-6)
EPA Substance Registry System Tungsten fluoride (WF6), (OC-6-11)- (7783-82-6)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
GHS04,GHS05,GHS06
Signal word  Danger
Hazard statements  H280-H314-H330
Precautionary statements  P260-P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338
Hazard Codes  T,C
Risk Statements  23/24/25-34
Safety Statements  26-36/37/39-45
RIDADR  UN 2196 2.3
WGK Germany  3
RTECS  YO7720000
Hazard Note  Toxic/Corrosive
HazardClass  2.3
HS Code  2826199090
NFPA 704
0
4 0

Tungsten hexafluoride price More Price(5)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 399108 Tungsten(VI) fluoride ≥99.9% 7783-82-6 225g $1820 2024-03-01 Buy
Sigma-Aldrich 399108 Tungsten(VI) fluoride ≥99.9% 7783-82-6 450g $2980 2024-03-01 Buy
American Custom Chemicals Corporation ING0005293 TUNGSTEN(VI) FLUORIDE 95.00% 7783-82-6 250G $4614.23 2021-12-16 Buy
American Custom Chemicals Corporation ING0005293 TUNGSTEN(VI) FLUORIDE 95.00% 7783-82-6 500G $4960.73 2021-12-16 Buy
SynQuest Laboratories M074-2-01 Tungsten(VI) fluoride 99.9% 7783-82-6 250g $795 2021-12-16 Buy
Product number Packaging Price Buy
399108 225g $1820 Buy
399108 450g $2980 Buy
ING0005293 250G $4614.23 Buy
ING0005293 500G $4960.73 Buy
M074-2-01 250g $795 Buy

Tungsten hexafluoride Chemical Properties,Uses,Production

Physical and Chemical Properties

Chemical formula is WF6. The molecular weight is 297.84. It is colorless gas or light yellow liquid. It has strong irritant. It is poisonous, its toxicity is similar with fluorine. When the temperature is very low, it is white solid. It is soluble in organic solvents and then generate a special color. When meet water, it can decompose. In the air, it can decompose with strong smoke by moisture, and generate yellow tungstate or tungsten trioxide. Chemical properties is lively. And almost all metals (except gold and platinum) can react with it. It is also corrosive for nickel, monel and stainless steel, but Ni and stainless steel have resistance for corrosion. When dry, it is less corrosive to glass, while in moisture, it is able to react quickly. It can react strong with gaseous ammonia. Ammonia or an alkali can absorb it . It can generate double salt with alkali metal fluoride. It is soluble in benzene and other organic solvents.
[Density] 3.44×103kg/m3 (15℃, liquid)
[Melting point] 2.5℃ (5.6 × 104 Pa)
[Boiling point] 17.5℃
[Critical temperature] 171℃
[Critical pressure] 445.8kPa
[Preparation method] Metal tungsten powder and elemental fluorine can react to synthesize it directly.
[Application] (1) It is strong fluorinating agent, it can synthesize tungsten film in vapor deposition method. (2) it is used in the microelectronics industry for chemical vapor deposited tungsten silicide or tungsten, to produce a low resistance, a high melting point interconnects.

Figure 1 shows the molecular structure of tungsten hexafluoride.

Hazardous characteristics

When meet moisture, air or water, it will decompose and emit toxic and corrosive hydrogen fluoride fumes. It can cause very serious burns for skin, eyes, mucous membranes. When high concentrations expose, it can cause nausea, vomiting, abdominal pain, convulsions, kidney damage.
The above information is edited by the chemicalbook of Wang Xiaodong.

Storage Instructions

It shoud be packed in special cylinders and stored in a cool, ventilated coffers. Avoid direct sunlight. Keep away from heat and sources of ignition. Prevent moisture. Metal, glass should be isolated storage. "poison gas" signs should be affixed. Aviation, railway transportation is prohibited. When other combustibles on fire around, dry powder, carbon dioxide can be used to extinguish. Water can be used to cool cylinder, and then close the valve quickly.

First-aid steps

It has eye irritation and can lead to blind, eyes should continue to be rinsed, go to the hospital fast for treatment. After corrosion, skin and mucous membranes is difficult to heal, it should be washed with water, and then coated with magnesium oxide ointment or glycerol dilute ammonia, and seek medical advice.

Category

Compressed gas and liquefied.

Flammability hazard characteristics

When meet water, it can decompose into toxic hydrogen fluoride gas and tungstate.

Storage characteristics

Treasury ventilation low-temperature drying.

Extinguishing agent

Water.

Occupational standards

TLV-TWA 5 mg (tungsten)/cubic meter; STEL 10 mg (tungsten)/cubic meter.

Chemical Properties

Tungsten hexafluoride is a toxic, colorless gas or a light yellow liquid.

Chemical Properties

Colorless gas or light-yellow liquid.

Uses

In the electronics industry as a source of tungsten metal that connects the aluminum layers within semiconductor devices.

General Description

A toxic corrosive light yellow liquid or gas. Boiling point 67°F. Melting point 37°F. Noncombustible. Used in the manufacture of other chemicals and in the manufacture of electronics.

Air & Water Reactions

Decomposes in water giving hydrofluoric acid, another corrosive material.

Reactivity Profile

Tungsten hexafluoride emits very toxic and irritating fumes containing metallic tungsten and tungsten fluorides when heated to decomposition. Reacts violently with tetramethoxysilane [Jacob, E., Angew. Chem., 1982, 21, p. 143].

Health Hazard

TOXIC; may be fatal if inhaled, ingested or absorbed through skin. Vapors are extremely irritating and corrosive. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution.

Fire Hazard

Some may burn but none ignite readily. Vapors from liquefied gas are initially heavier than air and spread along ground. Some of these materials may react violently with water. Cylinders exposed to fire may vent and release toxic and/or corrosive gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket.

Safety Profile

A poison and corrosive liquid or gas.

Potential Exposure

A strong halogenating agent. Used to apply tungsten coatings to other surfaces by vapor deposition process; making electronics and components; in the manufacture of other chemicals.

Shipping

UN2196 Tungsten hexafluoride, Hazard Class: 2.3; Labels: 2.3-Poisonous gas, 8-Corrosive material, Inhalation Hazard Zone B. Cylinders must be transported in a secure upright position, in a well-ventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner.

Incompatibilities

Decomposes on contact with water and moist air, forming highly corrosive hydrofluoric acid. Violent reaction on contact with methyl silicate.

Waste Disposal

Return refillable compressed gas cylinders to supplier. Nonrefillable cylinders should be disposed of in accordance with local, state and federal regulations. Allow remaining gas to vent slowly into atmosphere in an unconfined area or exhaust hood. Refillabletype cylinders should be returned to original supplier with any valve caps and outlet plugs secured and valve protection caps in place.

Tungsten hexafluoride Preparation Products And Raw materials

Raw materials

Preparation Products

Global( 61)Suppliers
Supplier Tel Email Country ProdList Advantage
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21700 55
Hangzhou FandaChem Co.,Ltd.
008657128800458; +8615858145714 fandachem@gmail.com China 9354 55
career henan chemical co
+86-0371-86658258 sales@coreychem.com China 29914 58
Hubei Jusheng Technology Co.,Ltd.
18871490254 linda@hubeijusheng.com CHINA 28180 58
Hubei xin bonus chemical co. LTD
86-13657291602 linda@hubeijusheng.com CHINA 22968 58
Chongqing Chemdad Co., Ltd
+86-023-61398051 +8613650506873 sales@chemdad.com China 39916 58
Hefei TNJ Chemical Industry Co.,Ltd.
0551-65418671 sales@tnjchem.com China 34572 58
CD Chemical Group Limited
+8615986615575 info@codchem.com China 20356 58
changzhou huayang technology co., ltd
+8615250961469 2571773637@qq.com China 9821 58
Shaanxi Didu New Materials Co. Ltd
+86-89586680 +86-13289823923 1026@dideu.com China 9602 58

View Lastest Price from Tungsten hexafluoride manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Tungsten hexafluoride pictures 2019-07-06 Tungsten hexafluoride
7783-82-6
US $1.00 / kg 1 g 99% 100KG Career Henan Chemical Co
Tungstenfluoride TUNGSTEN HEXAFLUORIDE TUNGSTEN(VI) FLUORIDE (oc-6-11)-tungstenfluoride(wf6 Hexafluorotungsten Tungsten fluoride (WF6) Tungsten fluoride (WF6), (OC-6-11)- WF6 TUNGSTEN(VI) FLUORIDE CYL. WITH 450 G TUNGSTEN(VI) FLUORIDE, 99.9+% TUNGSTEN (VI) FLUORIDE (99.9+%-W) Tungsten hexafluoride 99% Tungstenhexafluoride99% (oc-6-11)-tungsten fluoride Wolfram(VI)hexafluoride Tungsten Hexafluoride (WF6) Standard solution for the determination of fluoride 7783-82-6 F6W Synthetic Reagents Compressed and Liquefied Gases Synthetic Reagents Chemical Synthesis Electronic Chemicals Fluorides Materials Science Micro/NanoElectronics Specialty Gases