Research of D(-)-tartaric Acid Synthesis by Induction Split

The synthesis method,operation process and control condition of induction split D(-)-tartaric acid with induction split were introduced,and found that the optimal conditions for resolution were that in the 28 ℃ put the seed,slow cooling to have crystal,and 1 min separation immediately after the filter,and the filter can spin tartaric acid and ammonium away sodium left spin tartaric acid sodium ammonium and a right-handed,using ammonium tartaric acid sodium placement response can get D(-)-tartaric acid.The optical rotations was [α]20D=-12.19 °(c=20,H2O),and the resolution ratio was greatly enhanced for 46.5%.