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Sulfur hexafluoride
Sulfur hexafluoride

Sulfur hexafluoride

Price USD1.00
Packge 1kg
  • Min. Order:1 g
  • Supply Ability:100KG
  • Time:2019-07-06

Product Details

  • Product NameSulfur hexafluoride
  • CAS No.2551-62-4
  • EINECS No.219-854-2
  • MFF6S
  • MW146.05
  • Appearancecolorless gascolorless
  • Water Solubility slightly
  • density 6.602
  • Boiling point −64 °C1 mm Hg(lit.)
  • Melting point −50 °C(lit.)

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Sulfur hexafluoride Basic information
Chemical Properties Molecular Structure Uses Impact on the environment 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: Inorganics;Inorganic Fluorides;Vitamin Ingredients;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 Reference 2551-62-4(CAS DataBase Reference)
NIST Chemistry Reference Sulfur hexafluoride(2551-62-4)
EPA Substance Registry System Sulfur fluoride (SF6), (OC-6-11)-(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
HazardClass  2.2
Hazardous Substances Data 2551-62-4(Hazardous Substances Data)
MSDS Information
Provider Language
Sulfur hexafluoride English
SigmaAldrich English
 
Sulfur hexafluoride Usage And Synthesis
Chemical Properties Chemical 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.
Molecular Structure In VSEPR theory, sulfur hexafluoride molecular configuration is regular octahedron, which shows in Figure 1, the yellow is sulfur atom, the blue is fluorine atom. The hybrid orbital type of sulfur atom in sulfur hexafluoride is generally considered sp3d2. The angles between adjacent S-F bond are all 90 °. S-F bond length is 1.55 Å. The dipole moment is 0, and therefore they are non-polar molecules. 

Figure 1 is a sulfur hexafluoride stick model.
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
 
Impact on the environment Since the high intensity of infrared absorption, sulfur hexafluoride has been identified as a greenhouse gas, and it is the strongest greenhouse gases. 《Kyoto Protocol》indicate human must make great efforts to reduce the emissions of sulfur hexafluoride. Although sulfur hexafluoride in the atmosphere is very stable, when it once dissociate, it will generate S2F10, SF4 and HF and other fluorine-containing molecules, and these are corrosive and toxic substances, some of which are also greenhouse gases.
Acute intravenous toxicity Rabbit LD50: 5790 mg/kg
Storage characteristics Treasury ventilation low-temperature drying; Handle gently.
Chemical Properties Colorless gas; odorless. Slightly soluble in water; soluble in alcohol and ether. Noncombustible.
Uses In electrical circuit interrupters. In electronic ultra-high frequency piping.
Brand name SonoVue (for the microbubble formulation) (Ausimont).
Reactivity Profile This 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].
Hazard Asphyxiant.
Health Hazard Vapors 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 Hazard Some may burn but none ignite readily. Containers may explode when heated. Ruptured cylinders may rocket.

Company Profile Introduction

Henan CoreyChem Co., Ltd, based on the original Zhengzhou Cote Chemical Research Institute, be brave in absorbing highly educated talents & overseas returnees; actively responded to Zhengzhou City High-tech Zone Government’s Special Care Policy, reorganized and founded in National University of Science and Technology Park, which is a high-tech, stock enterprise of high-end chemical Custom synthesis;The park was created by the People's Government of Henan Province, and proved by Ministry of Education and the National Science & Technology, taking the construction mode of "many college a park, and common development", mainly depends on Zhengzhou University and Henan University’s scientific research and talent advantage to set up Universities, scientific research institute and enterprise scientific research achievements transformation platform, to make high-tech enterprises incubate,  is the new high-tech talent gathering base, high and new technology industry enterprise radiation base, colleges and universities technological innovation base.
 
Henan Coreychem Co., Ltd, facing global High-tech pharmaceutical raw materials, high complex new type intermediates, fine chemicals custom synthesis, scale-up production and Rare chemicals trade. Corey have well-equipped machine, strong technical force and considerate marketing team service. We also have rich experience advantage in basic research, small scale process development, scale-up, industrial technology development & production and cost control.
 

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  • Since:2014-12-17
  • Address: No.967,15th Floor,Unit 7, Building 1, No.70 of DianChang Road, High-tech Development Zone, Zhengzho
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