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Cis-2-Butene, C4H8, is a colourless, flammable, weak anaesthetic, liquified gas with a slightly aromatic odour.

Pure Cis-2-butene is used:

  • in halogenation and alkylation processes.

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

Technical Properties
Molecular Weight: 56.11
Specific Gravity (Air = 1): 2.01
Odour: Slightly aromatic
CAS Registry No.: 590-18-1