| abstract |
【Task】 Water-soluble yellow pigment (compound) with high water solubility, water fastness, moisture resistance, ozone gas resistance, abrasion resistance and light fastness, especially excellent light resistance, and various recordings containing it In particular, an object is to provide a yellow ink composition for inkjet recording. [Solution] The water-soluble azo compound or its salt represented by following formula (1). [Chemical 1] (In formula (1), Q represents a halogen atom, x represents an integer of 2 to 4, and Z represents a hydrogen atom or a sulfo group.) [Selection figure] None |