n-Butane (R600)


n-Butane (R600) is supplied as a liquid under its own vapour pressure in cylinders and in T50 ISO containers for international transport as well as road trailers and rail cars. It is generally used in industrial refrigeration applications including LNG liquefaction. It also has applications as a heat transfer fluid in the geothermal industry.

Standard Specifications

(AGT International has multiple sources for n-butane, sample purities are shown below)

Purity / Assay
Impurities (mol)
n-Butane> 98%> 99.5%
IsoButane< 1.0%< 0.2%
Propane< 1.0%< 0.3%
Methane< 0.1%< 100ppm
Ethane< 0.1%< 100ppm
Isopentane< 0.1%< 10ppm
n-Pentane< 0.1%< 10ppm
Sulfur< 1ppm< 1ppm
Moisture< 10ppm< 10ppm

Standard Container Sizes and Fill Volumes

Container Information
TypeL454 Cylinder20' T50 ISO Container40' T50 ISO ContainerRoad Trailer

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

Technical Information

Technical DataShipping Information
Molecular Weight (g/mol)58.12Shipping NameButane
Liquid Density (kg/m³)601.4Hazard Class2.1
Gas Density (kg/m³)2.52UN No.UN 1011
Boiling point (°C)-0.5Hazard LabelFlammable liquid
Specific Volume (m³/kg)0.4CAS No.106-97-8
Vapour Pressure (bar.a @ 20°C)1.12
Valve OutletCylinder – CGA 510, T50 - ACME, MALE. 1 ¾” gas phase / 3 ¼” liquid phase