A new organic reagent N-(2'-thienylmethylene)-2,4,6-triamino-1,3,5-triazine has been synthesised and studied spectrophotometrically for its metallochromic properties towards Fe(III), Fe(II), Cu(II), Co(II), NI(II) and Zn(Il) metal ions. The reagent forms coloured complexes between pH 5.0 and 6.0. Concentration versus absorbance relationship is linear up to a level as low as 2 ppm.
Z H CHOHAN ,M AMINUDDIN ,
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