The sulfate soap Is refined through extracting unsaponlfiablc neutral substan比usingethyla以tatc and hcxanc—acctonc.The contentofncutralsubstancelntallolldccreasesfrom32.8％to 7.4％and 18％The acid number oftalloilincrcascsfrom！19to！69and！53Thequalityoftall oil Is greatly improved.ThlSprovides a favorable condition for distillation of tall oil.Theunsaponlfiablc neutral substancenom crude sulfate soap mainly consists of tcrPCnc aldchydcs,Icrpcnc alcohols,fatty alcohols and sterols Inwhlch larlxol Is 26.3％and 18.5％;sterols arc 17％and 27.l％M paratcly.The wb！to crystals containing sterols of96.9％are obtalncdbycrystalhaatlonand rccrystalllzatlon The sterols arc mainly g一sltostcrol and campcsterol.
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