Figure 1: An distillation column is used to distill BTX into benzene, toluene and xylene.
Benzene-Toluene-Xylene or BTX is a Crude Oil derivative that contains aromatic hydrocarbons. BTX can be further separated via distillation into Benzene (vial, beaker or drum), Toluene (vial, beaker or drum) and Xylene (vial, beaker or drum).
BTX can also be refined from heavy or light naphtha and is a precursor for terephthalic acid, which is a precursor for the thermoplastic polymer PET.
Benzene-Toluene-Xylene on en.wikipedia.org