Open Access
1994
This experiment was purposed to isolate the colouring powder from “ulin” wood waste. It has been done involved extraction process at the laboratory scale will weter solvent. From the result show that, the yield of extractives by purification was small, generally up to 6,12 - 7,98 %. However, without the purification after axtraction relatively high, generally up to 9,64 - 12.82 % because of contain impurities that are soluble in hexane