
Propylene (C3H6)
Propylene(C3H6) - is a colorless, flammable, liquified gas with a faintly sweet odor, so like natural gas it has Ethyl Mercaptan added which gives it its distinctive “smell”. Propylene has a higher overall temperature than propane and much lower temperature than acetylene.
Common uses of Propylene?
Propylene is primarily used in heating applications and as a hotter replacement for propane in heavy steel fabrication for heating and cutting.
Common Cylinder Sizes
Bulk - call for details
Standard Cylinder Capacities, 52#s, 25#, the pressure of a full cylinder at 70 degree Fahrenheit is 136psi.
Cylinder Pressure changes with temperature, click to find out details (pdf)
Many other Cylinder Sizes are available. Please call.
Fun Fact
Propylene normally is a liquid in cylinders. Propylene cylinder pressure will generally remain constant until the liquid is gone and then it drops quickly.
Fuel Gas Comparison (pdf)
1 gallon liquid (nbp) = 4.22 pounds
1 liter liquid (nbp) = cf Gas (NTP)
1 kg = cf Gas (NTP)
1 pound = cf Gas (NTP)
Properties of Propylene:
Molecular Weight is 42.08
Specific Volume is 9.05 ft/lb (0.56m/kg)
Flammability Limits are 2.4 - 11.0
%
TLV is Simple Asphyxiant
DOT Name: Propylene
UN No.: UN1077
DOT Class: 2.1
DOT Label: Flammable Gas
CAS Registry: 115-07-7
Molecular Weight: 42.08
Specific Volume 9.05 cuft/lb
Flammability Limits 2.4 - 11.0
%
TLV Simple Asphyxiant
DOT Name Propylene
CAS No. 115-07-1

