| abstract |
The present invention provides a black compound which is used in inkjet recording and a writing implement, excels at ozone gas resistance, light resistance, water resistance, and color rendition, and has good storage stability as a recording fluid, and an ink composition containing the same. To be provided is a trisazo compound represented by formula (1) or its salt, an ink composition containing the said trisazo compound. (wherein R1 and R2 each respectively represents halogen atom, carboxyl group, sulfo group, (C1 to C4)alkyl group optionally substituted by hydroxy group or (C1 to C4)alkoxy group, (C1 to C4)alkoxyl group optionally substituted by (C1 to C4)alkoxy group, sulfo group or carboxyl group, etc., A represents phenyl group or naphthyl group (these phenyl group and naphthyl group optionally substituted by halogen atom, carboxyl group, sulfo group, sulfamoyl group optionally substituted by alkyl group or phenyl group; nitro group, etc.). |