IsoPentane (R601a)


Isopentane (R601a) is supplied as a liquid under its own vapour pressure in cylinders and in T11 ISO containers for international transport as well as road trailers and rail cars. It is a high boiling point hydrocarbon generally used in industrial refrigeration applications including LNG liquefaction. It also has applications as a heat transfer fluid in the geothermal industry.

Standard Specifications

Purity / Assay
Impurities (wt)
IsoPentane> 95%> 99.0%
n-Pentane< 4.0%< 1.0%
Olefins< 12ppm< 1ppm
Sulfur< 1ppm< 1ppm
Moisture< 30ppm< 10ppm

Standard Container Sizes and Fill Volumes

Container Information
TypeL454 Cylinder20’ T11 ISO ContainerRoad Trailer

*Railcars also available (US only). Please contact us for details.

Technical Information

Technical DataShipping Information
Molecular Weight (g/mol)72.15Shipping NamePentanes
Liquid Density (kg/m³)630Hazard Class3 (PGII)
Gas Density (kg/m³)3.2UN No.UN 1265
Boiling point (°C)27.9Hazard LabelFlammable gas
Specific Volume (m³/kg)0.1CAS No.78-78-4
Vapour Pressure (bar.a @ 20°C)0.79
Valve OutletCylinder – CGA 510, T11 - ACME, MALE. 1 ¾” gas phase / 3 ¼” liquid phase