| http://www.w3.org/ns/prov#value | - d or substituted aryl group). (5) The aqueous ink for ink-jet recording according to the above 2 wherein R.sub.1 in the formula (1) is a hydrogen atom, or an unsubstituted or substituted alkyl group having 5 or less carbonatoms, R.sub.2 is a hydrogen atom, and R.sub.3 is --CONR.sub.4R.sub.5 (in which each of R.sub.4 and R.sub.5 independently, represents an unsubstituted or substituted alkyl group
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