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SF6
Sulfer Hexafluoride
PropertiesandClassification
Appearance:Colorlessandodorlessgasorliquid
UNNumber:1080
CASNumber:2551-62-4
Liquefiedgas
*RefertoMSDSfordetailedinformationonthepropertiesandsafetyoftheproduct.
Specification
Purity
wt%
Min.99.999
Water
wtppm
Max. 3.0
Acids
wtppm
Max.
0.4
CH4
wtppm
Max.
0.3
CO2
wtppm
Max.
0.3
Air
wtppm
Max.
6.0
Item
Cylinder
Size
10Lcylinder
47Lcylinder
Insidediameter
140mm ﾙ
232mm ﾙ
Heigh
t(totheneckportion)
850mm ﾙ
1370mm ﾙ
1000mm ﾙ
1520mm ﾙ
885mm ﾙ
1400mm ﾙ
Height(withaprotectivecap)*
Valvenozzleheight(center)*
Loadingweight
10kg
50kg
Manganesesteel
Material
＊Estimatedvaluesforwhenastandardvalveismountedonastandardcylinder.
Theaccuracyofthesevaluesisnotguaranteed.
Valve
Nozzlesize
φ22m
mX14right-handthreads
Material
BRASS
HP-SF6 page01（1998SDK-CT）
High-Purity Sulfur Hexafluoride
SF6
S ulfer Hexafluoride
Physical & Chemical Properties
Item
Unit
Unit
Chemical formula
SF6
Molecular weight
146.06
Boiling point
℃
−63.89
Sublimation point
℃
。
Ｆ
−63.7
℃
−50.8
Melting point (223.9 kPa)
Liquid density
kg/L
Gas density (0°C, saturated liquid)
g/L
Critical temperature
℃
−82.7
−1.540
45.6
MPa
Critical pressure
3.77
kg/cm2
36.7
Flammability
Not applicable
Toxicity
Not applicable
Latent heat of vaporization (0°C, 1013 MPa)
Maximum permissible concentration (ACGIH)
kJ/kg
117
ppm
1000
Explosive limit (in air, 35°C, 101.3 kPa)
Temperature − Vapor Pressure Curve
10
P.C.
C.P.
Vapor 1
pressure
(MPa)
P.T.
T.P.
0.1
-70
-60
-50
-40
-30
-20
-10
0
Temperature（℃）
HP-SF6 page 02（1998SDK-CT）
＋10
＋20
＋30
＋40
＋50
＋60