Preparation of Potassium Antimony Tartrate

Potassium antimony tartrate was synthesized by the solid-liquid phase reaction of antimony trioxide and potassium hydrogen tartrate.The composition and structure of the obtained complex had been characterized by means of element analysis,X-ray powder diffraction and infra-red spectra.The results of indexes to the X-ray powder diffraction data indicate that the crystal structure of the potassium antimony tartrate belongs to monoclinic system.The lattice parameters are:a=0.825 0 nm,b=1.604 6 nm,c=1.773 6 nm,β=96.65°.The synthetic conditions were ascertained as follows:the molar ratio of antimony trioxide,potassium hydrogen tartrate and water was 1.05∶2.0∶92,the temperature of reaction was 90 ℃,the reaction time was 4.5 h,the product yield of reaction was 86.8%.