[Studies on hydroxyfluoran and its derivatives as organic reagents. XI. Solvent extraction of Sn (IV) with 3,4,5,6-tetrachloro-3',4',5',6'-tetrahydroxyfluoran and diphenylguanidine].
D000873:Anthracenes; D005461:Fluorine; D006146:Guanidines; D007202:Indicators and Reagents; D012997:Solvents; D013053:Spectrophotometry; D014001:Tin / Q000032:analysis*
D000873:Anthracenes; D006146:Guanidines; D007202:Indicators and Reagents; D012997:Solvents; D005461:Fluorine; D014001:Tin