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Sulfur hexafluoride

Chemical Properties Molecular Structure Uses Impact on the environment Acute intravenous toxicity Storage characteristics
Sulfur hexafluoride
Sulfur hexafluoride
Chemical Name:
Sulfur hexafluoride
SF6;Elegas;Esaflon;OC-6-11;SULFURHEXAFLORIDE;Hexafluorosulphane;SULFUR HEXAFLUORIDE;sulfurfluoride(sf6);SULFUR HEXAFLOURIDE;Schwefelhexafluorid
Molecular Formula:
Formula Weight:
MOL File:

Sulfur hexafluoride Properties

Melting point:
−50 °C(lit.)
Boiling point:
−64 °C1 mm Hg(lit.)
vapor density 
5.11 (vs air)
vapor pressure 
22 mm Hg ( 21.1 °C)
colorless gas
Water Solubility 
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)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H280 Contains gas under pressure; may explode if heated Gases under pressure Compressed gas
Liquefied gas
Dissolved gas
Warning P410+P403
Precautionary statements:
P410 Protect from sunlight.

Sulfur hexafluoride price

Manufacturer Product number Product description CAS number Packaging Price Updated Buy

Sulfur hexafluoride Chemical Properties,Uses,Production

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.


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.

Chemical Properties

Sulfur hexafluoride is a colorless, odorless gas. Shipped as a liquefied compressed gas.


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].



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.

Safety Profile

This 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 Exposure

May 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.

First aid

Eye: If eye tissue is frozen, seek medical attention immediately; if tissue is not frozen, immediately and thoroughly flush the eyes with large amounts of water for at least 15 minutes, occasionally lifting the lower and upper eyelids. If irritation, pain, swelling, lacrimation, or photophobia persist, get medical attention as soon as possible. Skin: If frostbite has occurred, seek medical attention immediately; do NOT rub the affected areas or flush them with water. In order to prevent further tissue damage, do NOT attempt to remove frozen clothing from frostbitten areas. If frostbite has NOT occurred, immediately and thoroughly wash contaminated skin with soap and water. Breathing: If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. If breathing has stopped, perform mouth-to-mouth resuscitation. Keep the affected person warm and at rest. Get medical attention as soon as possible.


UN1080 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.


May contain impurities that cause it to hydrolyze on contact with water, forming corrosive and toxic hydrogen fluoride. Vigorous reaction with disilane.

Waste Disposal

Return refillable compressed gas cylinders to supplier. Seal unused cylinders and return to suppliers.

Sulfur hexafluoride Preparation Products And Raw materials

Raw materials

Preparation Products

Sulfur hexafluoride Suppliers

Global( 80)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 22049 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20786 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32651 55
career henan chemical co
+86-371-86658258 CHINA 19990 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44187 61
JinYan Chemicals(ShangHai) Co.,Ltd. 13817811078,021-50426030
86-021-50426522,50426273 China 10073 60
Sinopharm Chemical Reagent Co,Ltd. 86-21-63210123
86-21-63290778 86-21-63218885 China 9966 79
Jinan Haohua Industry Co., Ltd 0531-58773082 ;58773060
0531-58773099 China 5621 58
Beijing HuaMeiHuLiBiological Chemical 010-56205725;010-86181995
010-65763397 China 12388 58

View Lastest Price from Sulfur hexafluoride manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-12-17 Sulfur hexafluoride
US $1.00 / kg 1 g 99% 100KG career henan chemical co

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