This standard BS EN 15536:2007 Derivatives from coal pyrolysis. Coal tar based oils. Wash oils. Specifications and test methods is classified in these ICS categories:
75.160.10 Solid fuels
This European Standard specifies and defines test methods for coal tar wash oils. Annex A specifies usage warnings for industrial purposes. The main purposes of these oils are to dissolve hydrocarbon derivatives in coke oven gas to clean greasy metal pieces.