Chemistry

×

Error message

  • Login to View the full-text of the paper.
  • Login to View the full-text of the paper.
  • Login to View the full-text of the paper.
  • Login to View the full-text of the paper.

VOLTAMMETRIC STUDY OF PYRIDOXINE HYDROCHLORIDE USING GLASSY CARBON ELECTRODE

The oxidative behaviour of pyridoxine hydrochloride was studied at a glassy carbon electrode in 0.06 M Na2HPO4 – NaH2PO4 buffer using cyclic voltammetry (CV), differential pulse voltammetry (DPV) and square wave voltammetry (SWV). The oxidation process was shown to be irreversible over the entire pH range studied (5.0 - 9.0). The influence of the operational parameters like scan rate, pulse amplitude, and pulse period for the analytical signal was investigated.

HEXAMINE AS CORROSION INHIBITOR FOR ZINC IN (HNO3 + HCL) BINARY ACID MIXTURE

The corrosion of zinc in binary acid mixture (HNO3 + HCl) containing Hexamine has been studied at different acid concentrations, inhibitor concentration and temperatures. As the concentration of acid increases corrosion loss and I.E. (Inhibition efficiency) increases. As the concentration of inhibitor increases I.E. also increases. As temperature  increases  corrosion loss increases while percentage of I.E. decreases.

ANILINE AS CORROSION INHIBITOR FOR ZINC IN NITRIC ACID

The corrosion of zinc in phosphoric acid containing aniline has been studied at different acid concentrations, inhibitor concentration and temperatures. As the concentration of acid increases corrosion loss and I.E. (Inhibition efficiency) increases.  As the concentration of   inhibitor increases I.E.  aniline  also increases. As temperature increases corrosion   loss increases while percentage of I.E. decreases.

SYNTHESIS AND STUDIES OF SOME QUINOLINE BASED MONOAZO DISPERSE DYES

Various disperse dyes have been prepared by coupling various diazotized coupling components with 2,4 - dihydroxy-6-methyl quinoline. All the dyes were characterized by their percentage yield and elemental analysis. IR, H1 NMR, CMR of some selected synthesized compounds have been carried out. Their dyeing performance were assessed on polyester fabric.  The percentage dye bath exhaustion were found to be good and acceptable. The dyed fibres showed poor to fairly good light fastness and good to excellent wash fastness.