Abstract
The formation of metal chelates of two hydroxytriphenylmethane dyes,viz., aurintricarboxylic acid (Aluminon, AAC) and sulphodichlorohydroxydimethylfuchson dicarboxylic acid (Chrome Azurol S, CAS) has been reviewed. The former forms coloured water soluble chelates with beryllium(II), aluminium(III), copper(II), iron(III), scandium(III), yttrium(III), rare earths, platinum metals, thorium(IV) and uranium(VI).
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