Patent ID: 7547335

Claim:
A metal polishing composition comprising a compound represented by formula (1): wherein R 1 represents a single bond, an alkylene group or a phenylene group; R 2 and R 3 each independently represent a hydrogen atom, a halogen atom, a carboxyl group, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group or an aryl group; and R 4 and R 5 each independently represent a hydrogen atom, a halogen atom, a carboxyl group, an alkyl group or an acyl group provided that when R 1 represents a single bond, R 4 and R 5 do not simultaneously represent a hydrogen atom; and a compound represented by formula (2): wherein R 6 represents a single bond, an alkylene group or a phenylene group; R 7 and R 8 each independently represent a hydrogen atom, a halogen atom, a carboxyl group, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group or an aryl group; R 9 represents a hydrogen atom, a halogen atom, a carboxyl group or an alkyl group; R 10 represents an alkylene group; with proviso that, when R 10 represents a methylene group, formula (2) satisfies at least one of a condition that R 6 is not a single bond and a condition that R 9 is not a hydrogen atom, and an oxidizing agent.