What is Ethylene?
- Ethylene is a colorless, flame retardant gas with a faint odor that is slightly sweet and resembles the smell of damp and rot.
- This gas is non-toxic and has been used as an anesthetic in the past but isn’t currently used.
- The dangerous effects of this gas are: igniting and causing suffocation and dormancy if it is replaced with air.
Available grades:
The minimum grade available for commercial and industrial purposes is %99.5 and its laboratory and technical grade
%99.99 -%99.96 – %99.5
Tanks and maintenance:
- The maximum charge of ethylene in the cylinders is as follows:
- The weight percentage of the intake is 31% for cylinders with a working pressure of 123 bar, 35.5% for cylinders with a working pressure of 163 bar, and 35.5% for cylinders with a working pressure of 163 bar.
- Ethylene can also be transported in tube trailers, tanker trucks, and tanker trailers. It is also possible to transfer ethylene in bulk with the Pip Eline pipeline.
Compatible and incompatible materials:
- Due to the lack of corrosive properties in ethylene, ethylene can be used with any common metal.
- The use of butyl rubber in the presence of ethane gas is not recommended.
| Molecular Weight | 28.05 |
| steam pressure | 100 K. Pa @ -131.8 0C |
| Gas density | 1.261 Kg/m3 @ 0 0C and 1 atm |
| The latent heat of evaporation at the boiling point | 484 KJ/Kg |
| Specific heat capacity at temperature
15 0C At 1 atm |
CP=1.516 KJ/Kg.0C
CV=1.220 KJ/Kg.0C CP/CV=1.243 |
| Critical temperature | 9.90C |
| Critical pressure | 729.8 psig |
| Solubility in water | 0.26 vol.(gas)/Vol.(Water) at 0 0C and 1 atm |
| Explosion / ignition range in air | Flammable Gas |
Material Compatibility of Ethylene
| METALS | PLASTICS | ELASTOMERS | |||||||||||||||
Brass |
CARBON STEEL |
StainLess Steel |
Alumium |
Zinc |
CoPPER |
Monel |
Kel-F |
Teflon |
Tefzel |
Kynar |
PVC |
Polycarbonate |
Viton® | Buna-N | Neoprene | Polyurethane
Kalrez |
|
| GAS | |||||||||||||||||
S – Satisfactory for use with the intended gas
C – Conditional. May be incompatible under some circumstances or conditions Contact your Praxair representative for additional information
U – Unsatisfactory for use with the intended gas
I – Insufficient data available to determine compatibility with the intended gas
O – All nonmetalic, even those considered compatible, may be ignitable in oxygen enriched environments or in other oxidizing gases. Successful
use depends upon oxygen purity, pressure, temperature, cleanliness and elimination of ignition mechanisms. Please contact your Praxair
Representative for additional information
Classification of dangerous Products:
Dangerous Products Transport Information:
| IATA | IMDG | DOT | ||
| UN 1962 | UN 1962 | UN 1962 | UN NUMBER | |
| Ethylene | Ethylene | Ethylene | UN SHIPPING NAME | |
| 2.1 | 2.1 | 2.1 | TRANSPORT HAZARD CLASS | |
| NO | NO | NO | ENVIRONMENTAL HAZARD |
