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Sulfur Hexafluoride Electronic Gases SF6

Sulfur hexafluoride is a colorless, odorless, non-toxic, non-flammable stable gas, chemical formula: SF6, its molecular weight is 146.07, and its density is 6.1kg/m3 at 20°C and 0.1MPa, which is about the density of air. 5 times. Sulfur hexafluoride is gaseous at normal temperature and pressure, its critical temperature is 45.6 °C, its triple point temperature is -50.8 °C, and its sublimation point temperature is -63.8 °C under normal pressure. The molecular structure of sulfur hexafluoride is octahedral, the bonding distance is small, and the bonding energy is high, so its stability is very high. Its compatibility with electrical structural materials is similar to that of nitrogen.
Availability:
Quantity:
  • 2551-62-4

  • OEM/ODM

Technical Indicators

Components/Impurities

Sulfur Hexafluoride/4N

Sulfur Hexafluoride/5N

Sulfur hexafluoride content

99.99%

99.999%

Air

≤50ppm

≤2ppm

carbon tetrafluoride CF4

≤15ppm

≤1ppm

Hexafluoroethane C2F6

≤10ppm

≤1ppm

Octafluoropropane C3F8

≤10ppm

≤1ppm

waterH2O

≤8ppm

≤3ppm

Acidity (in HF)

≤1ppm

≤0.1ppm

Hydrolyzable Fluoride (as HF)

≤1ppm

≤1ppm


The Packing

Type of cylinder

gas pressure

Gas volume

High purity carbon dioxide

40L cylinder

2.1MPa

8.375m3

50KG

1OL cylinder

2.1MPa

1.675m3

10KG

Cylinder interface: QF-2, PX-32, thread outlet G5/8 (outer diameter 22.911, number of teeth 14 teeth/inch, pitch 1.814 mm, thread height 1.162, minor diameter 20.587)


Transport information

Transportation information

Chemical symbol

SF6

CAS No.

2551-62-4

DOT Shipping Class

non-combustible gas

DOT tags

non-combustible gas

Canadian Shipping Classification

2.2

Substance Identification (S) No.

1080

UN No.

UN 1080

Main hazards

high pressure compression, asphyxiation

Toxicity (TLV)

asphyxia

Explosive Limits (Toxic)

Non-flammable and non-toxic

Smell

none


Physical properties

Physical properties

Chemical name

SF6

Molecular weight

146.054

Melting point (224kPa)

-50.8℃

Ascension point (101.325kPa)

-63.7℃

Liquid Density (-50.8℃)

1880kg/m3

Gas density (0℃, 101.325kPa)

6.52kg/m3

Relative density (gas, air=1,20℃, 101.325KPa)

5.1

Specific volume (21.1℃. 101.325kPa)

0.1516m3/kg

Critical temperature

45.5℃

Critical pressure

3759kPa

Critical density

736kg/m3

Compression factor

Temperature(℃)

100kPa 1000kPa 2000kPa 3000kPa

15℃

0.9886 0.8656

50℃

0.9926 0.9137 0.8113 0.6760

Heat of fusion (222.35k, 224kPa)

196.65kJ/kg

Heat of vaporization (-63.8℃. 101.325kPa)

161.61kJ/kg

Specific heat capacity (gas, 25℃, 101.325kP)

Cp=665.18J/(kg·K)

(liquid, 225k)

Cv=759.14J/(kg·K)

Vapor pressure (-20℃)

682kPa

(0℃)

1250kPa

(30℃)

2680kPa

Viscosity (101.325kP, 0℃)

0.0142mPa·S

(Liquid, 229.85k)

0.500mPa·S

Surface tension (-50℃)

11.63mN/m

Thermal conductivity (101.325kP, 0℃)

0.01206w/(m·K)

Refractive index (gas, 0℃. 101.325kPa)

1.000783


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