Collect. Czech. Chem. Commun. 1980, 45, 1227-1235

Spectrophotometric study of reaction of sodium 6-hydroxy-5-dibenzo(a,j)phenoxazone-11,13-disulfonate with aluminium ions in the presence of cationoid tensides

Nguyen Truong Sona, Jan Lasovskýb and Eduard Ružičkaa

a Department of Analytical and Organic Chemistry
b Department of Inorganic and Physical Chemistry, Palacký University, 771 46 Olomouc


In weakly acidic medium, pH 3.5-6.5, the title dye forms with aluminium ions a complex with the Al : L ratio 1 : 1. In the presence of cetylpyridinium or carbethoxypentadecyltrimethylammonium, ternary complexes AlL3Sr (r = 6 or 9, respectively) are formed. The equilibrium constants of the complexing equilibria in the binary and ternary systems concerned were calculated, and a method of photometric determination of aluminium has been suggested.