Property

Propane

Butane

Liquid density

0.50 - 0.51

0.57 - 0.58

Conversion (ltr per ton)

1968

1732

Gas density/air

1.40 - 1.55

1.90 - 2.10

Boiling point (˚C)

−45

−2

Lat heat vaporiz (KJ/Kg)

358

372

Spec heat cap (Btu/deg)

0.60

0.57

Sulfur content (%)

0 - 0.02

0 - 0.2

Cal value (Btu/ft³)

2500

3270