A photographic light-sensitive material, especially for the silver dyestuff bleaching process is provided, which contains on a support in at least one layer, at least one dyestuff of the formula ##SPC1## In which R.sub.1, R.sub.2, D and E are organic radicals, R.sub.1 and R.sub.2 being in the 3-, 4- or 5-positions to the --CO--group, K is an acyl radical and m, n and p each equals 1 or 2. These dyestuffs are resistant to diffusion, form stable aqueous solutions, can be easily bleached, are fast to light and have favourable spectral properties.
A bis-azo compound represented by the following general formula (1), a tautomer thereof or a salt thereof: ##STR1## wherein R represents a substituted or unsubstituted phenyl group or a substituted or unsubstituted heteroaryl group and X represents a substituted or unsubstituted phenylene group. These compounds exhibit low toxicity and do not have any undesirable effect such as mutagenecity.
A disazo compound of the formula (I) in the free acid form, ##STR1## and an ink jet recording ink composition containing the same are provided, and the composition is superior in stability during storage or use, heat resistance, image clearness, water resistance and light fastness, and has a desirable tint as a red color.
