Isobutane

C4H10

Isobutane is produced from lower purity material by a combination of purification techniques including molecular sieve and fractional distillation.

Standard Specifications

Purity / Assay
Impurities (Mol ppm)
2.5
99.5%
3.0
99.9%
3.5
99.95%
4.0
99.99%
Nitrogen< 400< 160< 20< 20
Oxygen< 100< 40< 5< 5
Other Hydrocarbons< 4900< 1000< 500< 90
Sulpher< 1< 1< 1< 1
Moisture**< 5< 4< 3< 2
Total Impurities< 5000< 1000< 500< 100

**Moisture Specification only guaranteed if cylinders prepared by AGT International

Please contact us if the specification you require is not shown above. AGT International is able to custom manufacture different specifications according to your requirements.

Standard Cylinder Sizes and Fill Volumes

Cylinder Information 
Cylinder SizeFill Volume (kg)
ISO ContainerUp to 12.050
L454222.4
L108*53.1

* Dip tube available for liquid withdrawal

If you require a different container size please contact us.

Technical Information

Technical Data Shipping Information 
Molecular Weight (g/mol)58.123Shipping NameIsobutane
Liquid Density (kg/m³)593.4Hazard Class2.1
Gas Density (kg/m³)2.51UN No.UN 1969
Boiling point (°C)-11.7Hazard LabelFlammable gas
Specific Volume (m³/kg)0.406CAS No.72-28-0
Vapour Pressure (bar.a @ 20°C)2.13
Valve OutletCGA 510 / BS 4