Patent ID: 7737069

Claim:
A method of producing a magnesium compound represented by formula (I), Mg(OC 2 H 5 ) 2−n (OR 1 ) n (I) where R 1 is C m H 2m+1 , where m is an integer of from 3 to 10, and n is a numerical value satisfying 0<n<0.35, which method comprises charging and reacting: i) metal magnesium, ii) ethanol, iii) an alcohol having from 3 to 10 carbon atoms, and iv) at least one of a halogen and a halogen-containing compound containing at least 0.0001 gram atom of a halogen atom relative to one gram of the metal magnesium, wherein the molar ratio of component iii)/component ii) is from 0.001 to 0.3 based on the total amount of the components ii) and iii).