n-butane pure gas with up to 99.9% purity for use in a variety of applications, including chemical synthesis and flame gas. n-Butane is also available as part of various specialty gas and liquid mixtures, including hydrocarbon chromatographic standards and ASTM blends, as well as in natural gas standards, including

• calorimetric,
• high-ethane,
• extended analysis,
• GPA and
• helium.

When smaller quantities of gas are needed, n-butane can be found in two-component and multi-component gas mixtures in non- returnable Mini-Mix (TM) Transportables, including paraffins and olefins mixtures, used in industrial hygiene and safety and laboratory applications.