Gimenez Plaza, J. published the artcile2-Pyridinecarboxaldehyde 2-pyridylhydrazone as analytical reagent. III. Spectrophotometric determination of cobalt(II), Recommanded Product: 2-((2-(Pyridin-2-yl)hydrazono)methyl)pyridine, the publication is Afinidad (1980), 37(367), 243-6, database is CAplus.
A method for the spectrophotometric determination of Co(II) is based on the formation of a 1:1 complex of Co(II) with 2-pyridinecarboxaldehyde 2-pyridylhydrazone (I). Approx. 10 mL EtOH was added to the sample with 3 mL HOAc/NaOAc buffer (pH 6) and 5 mL 0.002M I and the total volume was adjusted to 25 mL. The absorbance was measured at 350-90 nm after 15 min. The relative error was 0.3-0.5% for determining 2-5 ppm Co. Significant interference was observed from â? ppm Hg(II), Cu(II), Sn(II), Fe(III), Ni(II), Zn(II), Fe(II), Pd(II), Au(III), Mo(VI), V(V), Os(VIII), and Ce(IV). The logarithm of the stability constant of the Cr-I complex is 6.88.
Afinidad 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, Recommanded Product: 2-((2-(Pyridin-2-yl)hydrazono)methyl)pyridine.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem