Water-soluble azo compound or salt thereof, ink, and recording medium

摘要

Provided are a compound represented by the following formula (1) or a salt thereof, and an ink containing the compound. In the formula, Q independently represents a halogen atom, R11 and R12 each independently represent an alkyl group substituted with an ionic hydrophilic group, and A1 represents a C1-C3 alkoxy-substituted alkylamino group or the like.