The effect of perchloroethylene on coking properties

► Perchloroethylene can lower fluidity and CSR and increase CRI of some coals. ► Poor coking property and high inertinite content coals were the most affected. ► Hence clean coal composites formed using heavy organic liquids may be misleading. ► Water-based laboratory methods can reliably produce clean coal composites. ► Hence these are a potential replacement for heavy organic liquid fractionation.