Method for preparing Grignard reagent

摘要: The invention discloses a method for preparing Grignard reagent. In the conventional reagent by using magnesium powder, content of common ingot can reach over 99 percent; after forms powder cutting processing, is about 95 4 percent metal oxidized during processing; an oxidation film delay occurrence reaction to cause initiation difficulty; and if dropping speed halogenated hydrocarbon increased, instant generated release great deal heat production accident occurs. characterized in that: large-particle or with nominal diameter more than 1 mm serves raw material; performed kettle mode external circulation mode. material, so quantity oxide greatly reduced, proportion byproducts formed initiator quality regent improved, utilization ratio are increased.