Molecular weight,

120.92

Boiling point(n.a.p),°C

-29.8

Freezing point,°C

-158

Density of liquid,(25°C),kg/L

1.311

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

6.33

Vapour pressure,(25°C),MPa

0.651

Critical temperature,°C

112

Critical pressure,MPa

4.11

Critical density,kg/L

0.558

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

165.1

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

0.071

vapour,W/(m.k)

0.0096

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

1.0

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

0.606

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

0.028

Ozone Depletion Potential

1.0

Global Warming Potential

8500

Grade

Excellent

First

Qualified

Purity,%(mass),≥

99.8

99.5

99.0

Moisture,mg/kg,≤

5

10

30

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