Gila Walter reagent T "properties: white needle crystal. Hygroscopic. Melting point 188-192 ℃ (decomposition). Soluble in water, soluble in 150 ethanol solution, soluble in glacial acetic acid, glycerol and ethylene alcohol. 

 Preparation: The mixture of chloride of ethyl acetate and ethanol, cooled to 0 ℃, adding pre-cooled to -5 ℃ of trimethylamine to control the exothermic reaction, the reaction temperature rose to within 1h 60 ℃, stop the heat After placed at room temperature for 24h, dropping 100% hydrazine hydrate, stir bar 45min, cooling, filter out the crystallization, drying, Kyrgyzstan La De reagent T, the yield of 83.5% -89.5%. 

 Uses: used to separate estrone and the work he was 17 - steroid ketones. "≥ 98% 25kg / drum