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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 oi