Cameron, Alan J. published the artcileColorimetric determination of palladium with pyridine-2-carboxaldehyde 2′-pyridylhydrazone, Related Products of pyridine-derivatives, the publication is Analytica Chimica Acta (1968), 40(3), 413-19, database is CAplus.
Pd can be determined colorimetrically by extraction of the 1:1:1 Pd(II)-chlorine-pyridine-2-carboxaldehyde 2′-pyridylhydrazone complex from an acidic aqueous solution into σ-dichlorobenzene and measurement of the absorbance of the extract solution The method is suitable for the determination of 10-110 μg. of Pd. Tolerance amounts for many metals have been determined and compare very favorably with those of other methods.
Analytica Chimica Acta published new progress about 2215-33-0. 2215-33-0 belongs to pyridine-derivatives, auxiliary class Pyridine,Amine, name is 2-((2-(Pyridin-2-yl)hydrazono)methyl)pyridine, and the molecular formula is C11H10N4, Related Products of pyridine-derivatives.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem