Glossary Energy Information Administration (EIA)
Glossary. C 4 H: A mixture of light hydrocarbons that have the general formula C 4 H n, where n is the number of hydrogen atoms per molecule. Examples include butane (C 4 H 10) and butylene (C 4 H 8 ). Calcination: A process in which a material is heated to a high temperature without fusing, so that hydrates, carbonates, or other compounds are ...