Molecular weight,

86.47

Boiling point(n.a.p),°C

-40.8

Freezing point,°C

-160

Density of liquid,(25°C),kg/L

1.194

Density of saturated vapour (at boiling point),kg/m³

4.82

Vapour pressure,(25°C),MPa

1.04

Critical temperature,°C

96

Critical pressure,MPa

4.98

Critical density,kg/L

0.525

Latent heat of vapourization (at boiling point),kJ/kg

233.5

Thermal conductivity(25°C),liquid,W/(m.k)

0.090

vapour,W/(m.k)

0.0012

Specific heat of liquid,(25°C),kJ/(kg.K)

1.40

Specific heat of vapour(n.a.p,25°C),kJ/(kg.k)

0.636

Solubility,gas in water(n.a.p,25°C),%(mass)

0.30

Ozone Depletion Potential

0.055

Global Warming Potential

1700

Grade

Excellent

First

Qualified

Purity,%,≥

99.8

99.5

99.0

Moisture,mg/kg,≤

10

20

50

Acidity,%(mass),≤

0.00001

0.0001

0.0001

High boiling residue,%(mass),≤

0.01

0.01

0.02

Appearance

Clear,Colourless

Odor

Odorless

Non-condensable in vapour,%(vol)≤

1.5