https://www.khonorwax.com/preparation-and-application-of-paraffin-wax.html Paraffin wax is the common name of solid higher alkane mixture. The molecular formula is CnH2n +2, where n =20~40. The excess residual oil in wax is removed by petroleum refining process. The oil is then separated by vacuum distillation. The main component of refined paraffin wax is saturated n-alkanes with carbon number of about 20-40, containing a small amount of isomers and alkanes.