Patent ID: 8791019

Claim:
A metal polishing liquid comprising a metal oxidizer, a metal oxide solubilizer, a metal anticorrosive, and a water-soluble polymer having an anionic functional group with a weight-average molecular weight of 8,000 or more, wherein the metal oxide solubilizer consists of at least one selected from inorganic or organic acids having a first-stage acid dissociation exponent of less than 3.7 at 25° C. and salts thereof, the metal polishing liquid has a pH of 1 to 2.8, and the water-soluble polymer has a median size of 20 nm or less, when measured using a laser diffraction particle size distribution meter, in an aqueous solution containing the water-soluble polymer adjusted to the same pH as the metal polishing liquid with the metal oxide solubilizer.