Poddar, Sailendra N. published the artcileSpectrophotometric determination of vanadium with Schiff’s base derived from 1-amino-8-hydroxynaphth-3,6-disulfonic acid and salicylaldehyde, SDS of cas: 5941-07-1, the publication is Indian Journal of Chemistry (1966), 4(8), 371-2, database is CAplus.
A spectrophotometric method for the determination of 0.000168 g. V/ml. is described. The method is based on the formation of a reddish yellow-colored complex when a solution containing VO3- is added to an aqueous solution of Schiff’s base (I) derived from o-HOC6H4-CHO and mono-Na 1-amino-2-hydroxynaphthalene-3,6-disulfonate (II) at pH 4.22-9.1. The color [λmax. 420 mμ and sensitivity 0.0048 γ V/cm.2] of the complex is quite stable and obeyed Beer’s law over a wide range (1.34-13.40 ppm.) of VO3- concentration By using Job’s method of continuous variation, a metal-ligand ratio of 1:2 is found. Halides, NO3-, NO2-, SO42-, WO42-, MoO42-, PO43-, citrate, OAc-, C2O42-, F-, alkali metals, and alk. earth metals do not interfere with the estimation when present at ±550 ppm. I was prepared by refluxing a mixture of II and o-OHC6H4CHO on water-bath for 2 hrs.; the mixture is left over night and the separated I is washed with dilute EtOH and dried (CaCl2).
Indian Journal of Chemistry published new progress about 5941-07-1. 5941-07-1 belongs to alcohols-buliding-blocks, auxiliary class Salt,Benzene,Naphthalene,Phenol,Inhibitor, name is 8-Hydroxy-1-(salicylideneamino)naphthalene-3,6-disulfonic acid monosodium Salt, and the molecular formula is C17H12NNaO8S2, SDS of cas: 5941-07-1.
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