Chromium, [3-(hydroxy-κO)-4-[2-[2-(hydroxy-κO)-1-naphthalenyl]diazenyl-κN1]-7-nitro-1-naphthalenesulfonato(3-)]-, reaction products with 6-amino-4-hydroxy-2-naphthalenesulfonic acid, 2-[(4-aminophenyl)sulfonyl]ethyl hydrogen sulfate, diazotized 2-amino-4-nitrophenol and 2,4,6-trichloro-1,3,5-triazine, sodium salts