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.
DS/EN 15536:2007 history
2007DS/EN 15536:2007 Derivatives from coal pyrolysis - Coal tar based oils: wash oils - Specifications and test methods