Aminopolycarboxylic acid chelating agent, heavy metal chelate compound thereof, photographic additive and processing method

摘要

An aminopolycarboxylic acid compound represented by the following formula or analogous thereof: ##STR1## The aminopolycarboxylic acid compound of the present invention can be used as a chelating agent for various metals, which is excellent in the biodegradability and masking effect on metals.