Product name: [1-Phenyl-3-methyl-4-{(2-benzoic acid) ethylenyl}-5-pyrazolone]; 2-[(5-carboxy-3-methyl- 1-Phenyl-1H-pyrazol-4-yl)
diaza ]benzoic acid Uses and characteristics: 1-phenyl-3-methyl-4-{(2-benzoic acid group)ethenyl}- 5-Pyrazolone is an important intermediate widely used in the production of acid dyes and solvent dyes. The downstream products of this intermediate include acid yellow 59#, solvent yellow 21#, solvent red 119#, solvent black 56# and other dye varieties.