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Sulfur hexafluoride

Sulfur hexafluoride Suppliers list
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: 0371-55170693
Email: info@tianfuchem.com
Products Intro: CAS:2551-62-4
Purity:99% Package:500G;1KG;5KG;25KG
Company Name: Hangzhou FandaChem Co.,Ltd.
Tel: 008615858145714
Email: fandachem@gmail.com
Products Intro: Product Name:sulfur hexafluoride (SF6)
CAS:2551-62-4
Purity:0.99999 Package:As request
Company Name: career henan chemical co
Tel: +86-371-86658258
Email: sales@coreychem.com
Products Intro: Product Name:Sulfur hexafluoride
CAS:2551-62-4
Purity:99% Package:1kg;1USD
Company Name: Hubei Jusheng Technology Co.,Ltd.
Tel: 86-18871470254
Email: linda@hubeijusheng.com
Products Intro: Product Name:sulfur hexafluoride
CAS:2551-62-4
Purity:99% Package:5KG;1KG
Company Name: Hubei xin bonus chemical co. LTD
Tel: 86-13657291602
Email: linda@hubeijusheng.com
Products Intro: Product Name:Sulfur hexafluoride
CAS:2551-62-4

Lastest Price from Sulfur hexafluoride manufacturers

  • Sulfur hexafluoride
  • US $1.00 / kg
  • 2019-07-06
  • CAS:2551-62-4
  • Min. Order: 1 g
  • Purity: 99%
  • Supply Ability: 100KG
Sulfur hexafluoride Basic information
Chemical Properties GRADES AVAILABLE Uses Physiological Effects METHOD OF MANUFACTURE Acute intravenous toxicity Storage characteristics
Product Name:Sulfur hexafluoride
Synonyms:(OC-6-11)-Sulfurfluoride;(oc-6-11)-sulfurfluoride(sf6;Elegas;Esaflon;Hexafluorure de soufre;hexafluoruredesoufre;hexafluoruredesoufre(french);OC-6-11
CAS:2551-62-4
MF:F6S
MW:146.06
EINECS:219-854-2
Product Categories:Inorganic Fluorides;Vitamin Ingredients;Inorganics;Chemical Synthesis;Compressed and Liquefied Gases;Synthetic Reagents
Mol File:2551-62-4.mol
Sulfur hexafluoride Structure
Sulfur hexafluoride Chemical Properties
Melting point −50 °C(lit.)
Boiling point −64 °C1 mm Hg(lit.)
density 6.602
vapor density 5.11 (vs air)
vapor pressure 22 mm Hg ( 21.1 °C)
form colorless gas
Water Solubility slightly
Merck 13,9063
Stability:Stable. Non-flammable. Explodes on contact with disilane. Reacts with sodium.
CAS DataBase Reference2551-62-4(CAS DataBase Reference)
NIST Chemistry ReferenceSulfur hexafluoride(2551-62-4)
EPA Substance Registry SystemSulfur hexafluoride (2551-62-4)
Safety Information
Hazard Codes Xi
Risk Statements 37
Safety Statements 38
RIDADR UN 1080 2.2
WGK Germany -
RTECS WS4900000
Hazard Note Irritant
DOT Classification2.2 (Nonflammable gas)
HazardClass 2.2
Hazardous Substances Data2551-62-4(Hazardous Substances Data)
MSDS Information
ProviderLanguage
Sulfur hexafluoride English
SigmaAldrich English
Sulfur hexafluoride Usage And Synthesis
Chemical PropertiesSulfur hexafluoride is a colorless, odorless, nontoxic, nonflammable gas that has a high dielectric strength and serves widely as an insulating gas in electrical equipment. At atmospheric pressures it sublimes directly from the solid to the gas phase and does not have a stable liquid phase unless under a pressure of more than 32 psia (221 kPa, abs). It is shipped as a liquefied compressed gas at its vapor pressure of 298 psig at 70°F (2050 kPa at 21.1 0C).
One of the most chemically inert gases known, it is completely stable in the presence of most materials to temperatures of about 400°F (204°C) and has shown no breakdown or reaction in quartz at 900°F (482°C). Sulfur hexafluoride is slightly soluble in water and oil. No change in pH occurs when distilled water is saturated with sulfur hexafluoride.
sulfur hexafluoride structure
sulfur hexafluoride structure
GRADES AVAILABLESulfur hexafluoride is available for commercial and industrial use in various grades (minimum 99.8 mole percent) having much the same component proportions from one producer to another.
Uses
Industry
Application
Role/benefit
Medicine
Anesthesia
Anesthetic/better anesthesia effect than nitric oxide
Retinal detachment repair operations
Provide a tamponade or plug of a retinal hole in the form of a gas bubble
Ultrasound imaging
Contrast agent/enhance the visibility of blood vessels to ultrasound
Semiconductor
Plasma etching
Etchant/breaking down product fluorine plasma can perform the etching
Metal casting
Magnesium and aluminum casting
Oxygen asphyxiant/inert and not corrosive and toxic
High-power microwave systems
Pressurizes waveguides
Insulates the waveguide, preventing internal arcing
Chemical weapon
Production of disulfur decafluoride
Feedstock
Magic show
Object floating show
Be colorless, tasteless and has greater density than air
Electrical equipment
High-voltage circuit breakers and gas insulated switchgear
Gaseous dielectric medium/has much higher dielectric strength than air or dry nitrogen
Others
Tennis, insoles filling
Gas filler/much lower capacity to pass through rubber membrane than air
Monitor the flow of the water and the diffusion of the air pollutants
Tracer agent/ stably exists in water and air
Zanyism
Performers breathe a little sulfur hexafluoride gas to make the voice become low and deep
Refrigerant
Good chemical stability and no corrosion on the equipment
 
Physiological EffectsSulfur hexafluoride is completely nontoxic, and in fact has been used medically with humans in cases involving pneumoperitoneum, the introduction of gas into the abdominal cavity. It can act as a simple asphyxiant by displacing the amount of oxygen in the air necessary to support life.
Lower fluorides of sulfur, some of which are toxic, may be produced if sulfur hexafluoride is subjected to electrical discharge. Personnel must guard against the inhalation of the gas after electrical discharge.
ACGIH recommends a Threshold Limit Value-Time-Weighted Average (TLV-TWA) of 1000 ppm (5970 mg/m3 ) for sulfur hexafluoride. The TLV- TWA is the time-weighted average concentration for a normal 8-hour workday and a 40-hour workweek, to which nearly all workers may be repeatedly exposed, day after day, without adverse effect.
OSHA lists an 8-hour Time-Weighted Average- Permissible Exposure Limit (TWA-PEL) of 1000 ppm (6000 mg/m3 ) for sulfur hexafluoride. TWA-PEL is the exposure limit that shall not be exceeded by the 8-hour TWAin any 8-hour work shift ofa 40-hour workweek.
METHOD OF MANUFACTURESulfur hexafluoride is made commercially by the direct fluorination of molten sulfur. Some higher and lower toxic fluorides formed in the process are removed, and the commercial product is more than 99.5 mole percent pure. A high-purity etchant grade is also available for the electronics industry. Common impurities include small amounts of carbon tetrafluoride, nitrogen, and water vapor.
Acute intravenous toxicityRabbit LD50: 5790 mg/kg
Storage characteristicsTreasury ventilation low-temperature drying; Handle gently.
DescriptionSulfur hexafluoride is a colorless, odorless, nontoxic, nonflammable gas that has a high dielectric strength and serves widely as an insulating gas in electrical equipment. At atmospheric pressures it sublimes directly from the solid to the gas phase and does not have a stable liquid phase unless under a pressure of more than 32 psia (221 kPa, abs). It is shipped as a liquefied compressed gas at its vapor pressure of 298 psig at 70°F (2050 kPa at 21.1°C).
One of the most chemically inert gases known, it is completely stable in the presence of most materials to temperatures of about 400°F (204°C) and has shown no breakdown or reaction in quartz at 900°F (482°C). Sulfur hexafluoride is slightly soluble in water and oil. No change in pH occurs when distilled water is saturated with sulfur hexafluoride.
Chemical PropertiesChemical properties of sulfur hexafluoride are very stable. And compared to selenium hexafluoride, the hydrolysis rate of sulfur hexafluoride is extremely low, this is due to the small radius sulfur atom, which resulting in six fluorine atoms form a larger steric hindrance around. However, the fluorine atom radius is not big, so the repulsive force between the six fluorine atoms is not too large, S-F bond is not easy to dissociate. Enthalpy of formation of sulfur hexafluoride is-1220 kJ/mol, but enthalpy of formation of sulfur hexafluoride is-74 kJ/mol. Thus, the radius of fluorine atom and sulfur atom radius cause the very stable of sulfur hexafluoride molecule together---the molecules themselves are difficult to disconnect bond and break down and the attack group is difficult to approach to the central atom, in the thermodynamics and kinetics, they are both stable. Studies have said sulfur hexafluoride can be stably present in the atmosphere for thousands of years.
Physical propertiesColorless, odorless gas; density 6.41 g/L; about five times heavier than air; liquefies at -50.7°C (triple point); density of liquid 1.88 g/mL at -50.7°C; sublimes at -63.8°C; critical temperature 45.54°C; critical pressure 37.13 atm; critical volume 199 cm3/mol; slightly soluble in water; soluble in ethanol.
UsesSulfur hexafluoride is used extensively as a gaseous dielectric in various kinds of electrical power equipment, such as switchgear, transformers, condensers, and circuit breakers. It has also been used as a dielectric at microwave frequencies and as an insulating medium for the power supplies of high-voltage machines.
Sulfur hexafluoride is also gaining use in nonelectrical applications, including blanketing of molten magnesium, leak detection, and plasma etching in the semiconductor industry. Sulfur hexafluoride also has some limited medical applications.
UsesSulfur hexafluoride is used extensively as a gaseous dielectric in various kinds of electrical power equipment, such as switchgear, transformers, condensers, and circuit breakers. It has also been used as a dielectric at microwave frequencies and as an insulating medium for the power supplies of high-voltage machines.
Sulfur hexafluoride is also gaining use in nonelectrical applications, including blanketing of molten magnesium, leak detection, and plasma etching in the semiconductor industry. Sulfur hexafluoride also has some limited medical applications.
UsesDielectric for high-voltage equipment
PreparationSulfur hexachloride may be prepared by reacting fluorine with sulfur or sulfur dioxide.
Brand nameSonoVue (for the microbubble formulation) (Ausimont).
Reactivity ProfileThis substance undergoes chemical reactions only under relatively severe circumstances. They are resistant to ignition, although they may become flammable at very high temperatures. They may be resistant to oxidation reduction, except in the most severe conditions. These materials may be nontoxic. They can asphyxiate. Contact of very cold liquefied gas with water may result in vigorous or violent boiling of the product and extremely rapid vaporization due to the large temperature differences involved. If the water is hot, there is the possibility that a liquid "superheat" explosion may occur. Pressures may build to dangerous levels if liquid gas contacts water in a closed container [Handling Chemicals Safely 1980].
HazardAsphyxiant.
Health HazardVapors may cause dizziness or asphyxiation without warning. Vapors from liquefied gas are initially heavier than air and spread along ground. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating, corrosive and/or toxic gases.
Fire HazardSome may burn but none ignite readily. Containers may explode when heated. Ruptured cylinders may rocket.
Materials UsesSulfur hexafluoride is noncorrosive to all metals. It may be partially decomposed if subjected to an electrical discharge. Some of the breakdown products are corrosive; this corrosion is enhanced by the presence of moisture or at high temperature. Sulfur hexafluoride decomposes very slightly in the presence of certain metals at temperatures in excess of 400°F (204°C); this effect is most pronounced with silicon and carbon steels. Such breakdown, presumably catalyzed by the metals, is only several tenths of 1 percent over 1 year. Decomposition at elevated temperatures does not occur with aluminum, copper, brass, and silver.
Most common gasket materials, including Teflon, neoprene, and natural rubber are suitable for sulfur hexafluoride service.
Safety ProfileThis material is chemically inert in the pure state and is considered to be physiologcally inert as well. However, as it is ordinarily obtainable, it can contain variable quantities of the lowsulfur fluorides. Some of these are toxic, very reactive chemically, and corrosive in nature. These materials can hydrolyze on contact with water to yield hydrogen fluoride, which is highly toxic and very corrosive. In high concentrations and when pure it may act as a simple asphyxiant. Incompatible with disilane. Vigorous reaction with disilane. May explode. When heated to decomposition emits highly toxic fumes of Fand SOx.
Potential ExposureMay contain highly toxic sulfur pentafluoride as an impurity. SF6 is used in various electric power applications as a gaseous dielectric or insulator. The most extensive use is in high-voltage transformers. SF6 is also used in waveguides, linear particle accelerators; Van de Graaff generators; chemically pumped continuous-wave lasers; transmission lines; and power distribution substations. Nonelectrical applications include use as a protective atmosphere for casting of magnesium alloys and use as a leak detector or in tracing moving air masses. Several sources note that vitreous substitution of SF6 in owl monkeys results in a greater ocular vascular permeability than that caused by saline. This implies that SF6 could have an important use in retinal surgery.
Physiological effectsSulfur hexafluoride is completely nontoxic, and in fact has been used medically with humans in cases involving pneumoperitoneum, the introduction of gas into the abdominal cavity. It can act as a simple asphyxiant by displacing the amount of oxygen in the air necessary to support life.
Lower fluorides of sulfur, some of which are toxic, may be produced if sulfur hexafluoride is subjected to electrical discharge. Personnel must guard against the inhalation of the gas after electrical discharge.
ACGIH recommends a Threshold Limit Value-Time-Weighted Average (TLV-TWA) of 1000 ppm (5970 mg/m3) for sulfur hexafluoride. The TLV- TWA is the time-weighted average concentration for a normal 8-hour workday and a 40-hour workweek, to which nearly all workers may be repeatedly exposed, day after day, without adverse effect.
OSHA lists an 8-hour Time-Weighted Average-Permissible Exposure Limit (TWA-PEL) of 1000 ppm (6000 mg/m3) for sulfur hexafluoride. TWA-PEL is the exposure limit that shall not be exceeded by the 8-hour TWAin any 8-hour work shift of a 40-hour workweek.
storageAll ofthe precautions necessary for the handling of any nonflammable gas must be taken.
ShippingUN1080 Sulfur hexafluoride, Hazard Class: 2.2; Labels: 2.2-Nonflammable compressed gas. Cylinders must be transported in a secure upright position, in a wellventilated 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.
IncompatibilitiesMay contain impurities that cause it to hydrolyze on contact with water, forming corrosive and toxic hydrogen fluoride. Vigorous reaction with disilane.
Waste DisposalReturn refillable compressed gas cylinders to supplier. Seal unused cylinders and return to suppliers.
Chemical PropertiesSulfur pentafluoride and sulfur tetrafluoride are classified by OSHA as highly hazardous chemicals under its Process Safety Management Standard and as toxic industrial chemicals on the basis of their highly toxic nature and production in large quantities (29 CFR 1910).
GRADES AVAILABLESulfur hexafluoride is available for commercial and industrial use in various grades (minimum 99.8 mole percent) having much the same component proportions from one producer to another.
Sulfur hexafluoride Preparation Products And Raw materials
Raw materialsPotassium hydroxide-->Sulfur-->Hydrogen fluoride-->Ampicillin-->Potassium hydrogen fluoride-->Bismuth pentafluoride
Tag:Sulfur hexafluoride(2551-62-4) Related Product Information
Hydrogen Sulfide ETHYLENE Chlorine Hydrogen Sulfur dioxide Ozone ETHANE Carbon tetrafluoride Chlorine dioxide Argon HELIUM Fluorine SULFUR HEXAFLUORIDE(SF6) SULFUR BLACK Sulfur sulfur dioxide Sulfur tetrafluoride Sulfur hexafluoride