Newblue-CHEM - Sulfur hexafluoride CAS NO.2551-62-4

Min.Order: 1 Kilogram
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Product Details

Keywords

Sulfur hexafluoride
2551-62-4
F6S

Quick Details

ProName: Newblue-CHEM - Sulfur hexafluoride
CasNo: 2551-62-4
Molecular Formula: F6S
Appearance: colourless odourless gas
Application: As per the MSDS
DeliveryTime: PROMPT
PackAge: IN 25kg drums
Port: SHANGHAI
ProductionCapacity: 10 Metric Ton/Month
Purity: 99.0%
Storage: In Room Temperature
Transportation: As per the MSDS
LimitNum: 1 Kilogram
Heavy metal: N/A
Grade: Industrial Grade,Food Grade,Pharma Gra...
N/A: N/A

Superiority

Our company engages in Sodium Tripolyphosphate (STPP) and Sodium Hexametabphosphate (SHMP) production; development of noble metal catalysts, synthesis of electronic chemical materials and general chemicals Imp&Exp trading business. The company is located in Zhengzhou High-tech Development Zone with import and export license. We passed ISO 9001:2008 in 2009, and won "High-tech Enterprise" by provincial government in 2013. Our STPP and SHMP has reached an annual output of 30000 tons and has successfully passed SGS, CIQ audits on many occasions.

In 2011 we entered the fine chemical market of Noble Metal Catalyst ,Organic Phosphine Ligands and OLED intermediates.With the joint efforts of our senior experts and professional technicians, Newblue has developed more than 500 compounds, which are widely used in the fields of production and life science. The objective of the company is to put quality first and put our customer’s needs first - the satisfaction of our customers is the company's ultimate goal. Improving product quality and service level is our responsibility, and creating more value for our customer’s is our purpose. We are constantly striving to make Henan Newblue a leading chemical supplier, and hope to create a better future with you.

Details

ulfur hexafluoride Basic information

Chemical Properties Molecular Structure Application Production method Impact on the environment Chemical properties Category Toxicity grading Acute intravenous toxicity Hazardous characteristics Flammability hazard characteristics Storage characteristics Extinguishing agent Professional standards

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 Chemical Properties

mp	−50 °C(lit.)
bp	−64 °C1 mm Hg(lit.)
density	6.602
vapor density	5.11 (vs air)
vapor pressure	22 mm Hg ( 21.1 °C)
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.
Application	1,Since it is very stable in water and air and very little content in the air, sulfur hexafluoride is used for tracer by scientists to monitor the flow of seawater and the diffusion of air pollutants. 2,Sulfur hexafluoride has good insulating properties, thus it is used as dielectrics and insulators in industry, especially in high-voltage circuits. 3,In the medical profession, sulfur hexafluoride is used as anesthetic. Studies have confirmed the anesthesia is better than nitric oxide. 4, The ability to pass through rubber membrane of sulfur hexafluoride gas is much lower than air, so it is used as filler, used to fill tennis, insole. 5, In the magic show, due to sulfur hexafluoride gas is colorless and odorless and it is greater than the density of air, magicians use to perform floating object, it can cause the illusion which the object can float in the air. In some funny performances, performers inhale sulfur hexafluoride gas, and then speak, voice can turn deeper, which can make the audience laugh. This is because the molecular weight of sulfur hexafluoride is greater than the average molecular weight molecular of air, the acoustic frequency is significantly reduced in sulfur hexafluoride, it is almost one-half than in the air, thus tone would reduce. The above information is edited by the chemicalbook of Wang Xiaodong.
Production method	The chemical properties of elemental sulfur is very lively, sulfur hexafluoride can generate by the combustion in fluorine gas. This process will produce a small amount of S2F10, but it can be decomposed into sulfur hexafluoride and sulfur tetrafluoride by heat, then NaOH solution can be used to remove sulfur tetrafluoride, sulfur hexafluoride of high purity can be get. Direct synthesis method: purified fluorine (including HF≤0.5%) and sulfur can react to generate sulfur hexafluoride and a small amount of S2F10, SF4, SF2 and S2F2. After washing, alkali washing, most of the impurities gas can be removed, and then the pyrolysis furnace can explode S2F10 into SF6 and SF4 (300 ~ 350 ℃), and then remove impurities by further alkali washing , purified SF6 gas is dry by silica gel and molecular sieve drier, then sulfur hexafluoride product can be prepared. S + 3F2 → SF6
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.
Chemical properties	It is inert, non-combustion gas. Colorless, odorless, tasteless. It is slightly soluble in water, alcohol and ether, soluble in potassium hydroxide.
Category	It is harmful gas.
Toxicity grading	Low toxicity.
Acute intravenous toxicity	Rabbit LD50: 5790 mg / kg
Hazardous characteristics	When be heat, in the condition of insolation can cause the cylinders explode.
Flammability hazard characteristics	When it contains ten trifluoride and meet water, toxic hydrogen fluoride gas can generate; and the combustion product has toxic fluoride and fumes of sulfur oxides.
Storage characteristics	Treasury ventilation low-temperature drying; Handle gently.
Extinguishing agent	Mist of water, sand.
Professional standards	TWA 6000 mg / m³; STEL 7500 mg / m.
Chemical Properties	colourless odourless gas
General Description	A colorless odorless gas. Noncombustible. Shipped as a liquefied gas under own vapor pressure. Contact may cause frostbite. Under prolonged exposure to fire or heat the containers may rupture violently and rocket.
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.