标准摘要
This document specifies a method of determining the mass fraction of acetone-soluble material (“resinous substance”) in the benzene-soluble extract from brown coals and lignites. NOTE The acetone extract also contains a mass fraction of wax dissolved simultaneously with the "resinous substance".
英文名称Brown coals and lignites — Determination of acetone-soluble material ("resinous substance") in the benzene-soluble extract