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    • Propynol (PA) physicochemical properties and preparation method

      Time of Update: 2021-12-07
      a-1,3 Chloropropene-2-ol preparation Put normal water into a 500mL three-necked flask, Na 2 CO 3 (or pre-prepared 10% Na 2 CO 3 ), stir and dissolve, add a-1,3 dichloropropene, The temperature is raised to 84~90℃ and the reaction is refluxed for 2h, cooled and neutralized with hydrochloric acid to a pH of 6~7, the reaction liquid is fractionated, 97~100℃ azeotrope is collected, and about 30g of oil layer is separated .

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