SDS

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9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance
: Colorless, Liquefied gas
Odour
: Sweet petroleum odor.
Odour threshold
: Odour threshold is subjective and inadequate to warn for over
exposure.
pH
:
Not applicab
le
Melting point / Freezing point
: -159
o
C
Boiling point
: -12
o
C
Flash point
: -87
o
C
Evaporation rate
:
Not available
Flammability
: Extremely flammable
Upper/lower explosive limit
: UPPER: 8.4 vol% LOWER: 1.8 vol%
Vapour pressure
: 31 psig
Vapour density
(Air =1)
: 2.006.
Relative density
: 0.56 ( 15
o
C)
Solubility
(H
2
O)
:
Negligible. (0.008%)
Partit
ion coefficient
: Log Pow 1.09 - 2.8.
Auto ignition temperature
: 460
o
C
Decomposition temperature
:
Not available
Viscosity
:
Not applicable