Ethylene, C₂H₄ is a colourless, flammable gas with a sweet odour and taste.

Applications
Pure ethylene is used:

• in polymerization processes
• in manufacturing of other chemical intermediates
• to ripen various fruits
• in the manufacturing of calibration mixtures.

Materials Compatibility
Metals: Brass; Stainless Steel; Carbon Steel; Aluminum; Zinc; Copper; Monel.
Plastics: Kel-F; PTFE; Polyamide; PP; Polyurethane; PVC.
Elastomers: Buna-N.

Technical Properties
Molecular Weight: 28.05
Specific Gravity (Air = 1): 0.975
Odour: Sweet
CAS Registry No.: 74-85-1