High-Purity HFC-23 (Trifluoromethane)

Properties and Classification

Appearance: Colorless and odorless gas UN Number: 1984
CAS Number: 75-46-7 Liquefied gas

* Refer to MSDS for detailed information on the properties and safety of the product.


Purity vol% Min. 99.999
Water volppm Max. 8
Acids as HCl volppm Max. 0.2
Other fluorocarbons volppm Max. 10
Air volppm Max. 20


Item 10L cylinder 47L cylinder
Size Inside diameter 140mm 232mm
Height (to the neck portion) 850mm 1370mm
Height (with a protective cap) * 1000mm 1520mm
Valve nozzle height (center) * 875mm 1380mm
Loading weight 8kg 35kg
Material Manganese steel

* Estimated values for when a standard valve is mounted on a standard cylinder. The accuracy of these values is not guaranteed.


Nozzle size Ø22 mm X 14 right-hand threads
Material BRASS

Physical & Chemical Properties

Item Unit Data
Chemical formula   CHF3
Molecular weight   70.01
Boiling point °C -82.05
°F -115.6
Melting point °C -155
Liquid density (0°C, saturated liquid) kg/L 1.029
Gas density (0°C, saturated liquid) g/L 112.8
Specific gravity (air: 1)   2.417
Critical pressure MPa 4.87
kg/cm2 49.7
Critical temperature °C 25.65
Flammability Not applicable
Toxicity   Not applicable
Latent heat of vaporization (0°C, 1013MPa) kJ/kg 143.4
Maximum permissible concentration (ACGIH) ppm -
Explosive limit (in air)   -

Temperature - Vapor Pressure Curve