HP Gas

High-Purity HFC-32 (Difluoromethane)

Properties and Classification

Appearance: Colorless and odorless gas UN Number: 3252
CAS Number: 75-10-5 Liquefied gas

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


Purity vol% Min. 99.99
Water volppm Max. 30
Acids as HCl volppm Max. 0.3
Other fluorocarbons volppm Max. 100
Air volppm Max. 100
High-Purity HFC-32 (Difluoromethane)


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 weigh 1kg, 3kg, 5kg 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 CH2F2
Molecular weight 52.02
Boiling point °C -51.65
°F -61.1
Melting point °C -136
Liquid density (0°C, saturated liquid) kg/L 1.055
Gas density (0°C, saturated liquid) g/L 22.1
Specific gravity (air: 1) 1.7
Critical temperature °C 78.1
Critical pressure MPa 5.782
kg/cm2 57.5
Flammability Not applicable
Toxicity Not applicable
Latent heat of vaporization (0°C, 1013MPa) kJ/kg 45.34
Maximum permissible concentration (ACGIH) ppm
Explosive limit (in airßA35°C, 101.3kPa) 13.3ß`29.3

Temperature – Vapor Pressure Curve

High-Purity HFC-32 (Difluoromethane)