Tocopheryl succinate was prepared by natural vitamin E and succinic anhydride, and then the influences of initial crystallization temperature, cooling rate and terminal crystallization temperature on the crystallization efficiency of tocopheryl succinate were investigated. The results showed that under the conditions of initial crystallization temperature 50℃, cooling rate 2℃/h, terminal crystallization temperature 0℃ and crystallization time 10 h, the content of tocopheryl succinate reached 97.1% and the yield was 91.4%. |