There are many condensate sources worldwide and each has its own unique gas condensate composition. However, in general, gas condensate has a specific gravity ranging from 0.5 to 0.8, and is composed of hydrocarbons such as propane, butane, pentane, hexane, etc. Natural gas compounds with more carbon atoms (e.g. pentane, or blends of butane, pentane and other hydrocarbons with additional carbon atoms) exist as liquids at ambient temperatures.[4] Additionally, condensate may contain additional impurities such as:[5][6][7][8]
Hydrogen sulfide (H
2S)
Thiols traditionally also called mercaptans (denoted as RSH, where R is an organic group such as methyl, ethyl, etc.)
Carbon dioxide (CO2)
Straight-chain alkanes having from 2 to 12 carbon atoms (denoted as C
2 to C
12)
Cyclohexane and perhaps other naphthenes
Aromatics (benzene, toluene, xylenes, and ethylbenzene)