Heavy naphtha, also known as white spirit or petroleum distillate, is a refined product from the distillation of crude oil.

Toluene, also known as methylbenzene or phenylmethane, is an aromatic hydrocarbon in the form of a clear liquid.

Xylene is a mixture of dimethylbenzene isomers, mainly comprising ortho-xylene, meta-xylene, and para-xylene.

Heptane is a saturated hydrocarbon belonging to the alkane family, with the chemical formula C7H16.

Hexane is an aliphatic hydrocarbon belonging to the alkane family.