Carbonyl-j-acid C21H16N2O9S2

carbonyl-j-acid is pure colorless crystal, industrial products often gray. Soluble in water and dilute inorganic acid, soluble in alkaline solution and generate salts. Synonyms: 4,4'-dihydroxy-7,7'-ureylenedi(naphthalene-2-sulphonic acid,7,7-(carbonyldiimino)bis[4-hydroxy-2-naphthalenesulfonic acid]; 5,5-DIHYDROXY-7,7-DISULPHO-2,2-DINAPHTHYL UREA; J Acid Urea; Bis-J Acid; 4,4'-dihydroxy-7,7'-ureylenedi(naphthalene-2-sulphonic acid); 7,7'-(Carbonyldiimino)bis[4-hydroxy-2-naphthalenesulfonic acid]; 6,6'-ureylene-bis(1-naphthol-3-sulfonic acid); phosgenated; N,N'-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea; 7,7'-Ureylenebis(4-hydroxy-2-naphthalenesulfonic acid); N,N'-Bis[6-(1-naphthol-3-sulfonic acid)]urea; 2-Naphthalenesulfonic acid, 7,7-(carbonyldiimino)bis4-hydroxy-; 4-hydroxy-7-{[(5-hydroxy-7-sulfonaphthalen-2-yl)carbamoyl]amino}naphthalene-2-sulfonic acidMolecular formula:  C21H16N2O9S2Cas No:134-47-4 carbonyl-j-acid1, molar refractive index: 122.382, molar volume (m3  mol): 280.53, equal capacity than capacity (90.2K): 909.24, surface tension (dyne  cm): 110.35, the polarizability (10-24cm3): 48.51  carbonyl-j-acid  mainly used for synthesis direct orange s,bright red 4BS.