Patent ID: 8889555

Claim:
A polishing agent for copper polishing, comprising: (A) 0.08-1.0 mol/kg of a multivalent inorganic acid, (B) 0.20-2.0 mol/kg of an amino acid, (C) 0.03-0.3 mol/kg of a protective film-forming agent, (D) an abrasive, (E) an oxidizing agent, (F) water, and (G) 0.02-1.0 mol/kg of at least one kind selected from among organic acids and their acid anhydrides, wherein the inorganic acid (A) is one or more selected from sulfuric acid, chromic acid, carbonic acid, hydrogen sulfide, sulfurous acid, thiosulfuric acid, selenic acid, telluric acid, tellurous acid, tungstic acid, phosphonic acid, phosphoric acid, phosphotungstic acid, vanadic acid, silicotungstic acid, pyrophosphoric acid and tripolyphosphoric acid, and wherein an amount of potassium hydroxide required to increase pH to 4 is at least 0.10 mol per 1 kg of the composition, the pH being of a composition obtained by removing component (G) from the polishing agent for copper polishing.