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Refrigerant 318C (Octafluorocyclobutane)

CAS No.: 115-25-3

EC No.: 204-075-2

Molecular Formula: C4F8

Synonyms: Freon C318; Halocarbon C318; Perfluorocyclobutane; RC-318.

RC-318 is produced by the tetrafluoroethylene dimerization and the reductive coupling of 1,2-dichloro-1,1,2,2-tetrafluoroethane.

Physical Properties:

Molar mass g/mol-1 200.03
Boiling Point  °C -5.8
Melting Point °C -40.1
Density of liquid g/cm3 1.654
Solubility in water Vol/vol 0.016
ODP   0


RC-318 is used as:

• propellant in food industry,

• refrigerant, cleaning agent, dielectric (mixture with SF6);

• polymerization of fluorine-containing polymers;

• extinguishing agent in fire suppression systems.

Quality standards:

Items Specification
318 (main substance content), % 99.5
Moisture, mg/kg 40
Acidity, mg/kg 1
Non-volatile residues, % 0.01
Appearance clear colorless liquefied gas

Standard Packaging:

• steel cylinder, 48kg;

• Isotank.

Filling ratio – 1.296 kg/l.

All refrigerants are packed to ARI700 standards. These are the standard sizes but if you require different packaging, we can cater for all packaging. We can offer EN or DOT returnable cylinders.

Risks and Safety Information

RC-318 is regulated by UN as Non-flammable liquefiable gas with Class 2.2.

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