Quddus, M. A. published the artcileExtraction of zinc by pyridine 2-carboxaldehyde 2-pyridylhydrazone (PAPHY) in chloroform, SDS of cas: 2215-33-0, the publication is Journal of Inorganic and Nuclear Chemistry (1971), 33(7), 2001-7, database is CAplus.
The distribution of Zn between aqueous solutions and pyridine 2-carboxaldehyde 2-pyridylhydrazone (PAPHY) in CHCl3 has been studied as a function of the pH of the aqueous phase and the concentration of PAPHY. Stability and acid dissociation constants of the complex ions have been determined as well as the partition coefficients of the ligand and its extractable Zn complex. An equation has been proposed to represent the extraction equilibrium and its essential correctness verified.
Journal of Inorganic and Nuclear Chemistry 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, SDS of cas: 2215-33-0.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem