| abstract |
(57) [Summary] [Object] An object of the present invention is to provide an alcohol-soluble salt-forming dye for use in writing ink, recording ink, and the like, and an ink composition containing the dye. [Structure] Formula: [Chemical 2] [In the formula, Ka + represents a cation of an amine having 6 to 12 carbon atoms, which may be branched and may be interrupted by oxygen, and is substituted with at least one of a chain or cyclic alkyl group or aralkyl group. Meaning], and each of the disazo salt forming dyes, and an ink composition containing them. |