The refined product with high purity is obtained by vacuum distillation of crude benzal chloride.

 
  • 將制得的芐叉二氯粗品進(jìn)行真空精餾得到高純度的精品;
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan