Mixture of 2,5-dichloro-4-[4-[[5-[[4-chloro-6-[[4-(ethenylsulfonyl)phenyl]amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]azo]-4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl]benzenesulfonic acid, disodium salt(627463-71-2) and 2,5-dichloro-4-[4-[[5-[[4-chloro-