2-Hydroxy-1-naphthaldoxime as an analytical reagent for titanium(IV)

Area of Science:

• Analytical Chemistry
• Inorganic Chemistry

Background:

• Accurate determination of titanium is crucial in various industrial applications.
• Existing methods for titanium analysis may lack selectivity or sensitivity.

Purpose of the Study:

• To introduce 2-Hydroxy-1-naphthaldoxime as a novel reagent for titanium determination.
• To evaluate the selectivity, sensitivity, and reproducibility of this new analytical method.

Main Methods:

• Gravimetric analysis using 2-Hydroxy-1-naphthaldoxime.
• Quantitative separation of titanium(IV) from interfering ions like iron(III).
• Characterization of the resulting titanium complex using elemental analysis, molecular weight, magnetic susceptibility, and infrared spectroscopy.

Main Results:

• The oxime complex of titanium can be dried to a constant weight at 105-110°C with a conversion factor of 0.1793.
• The method demonstrated high sensitivity and reproducibility.
• Successful quantitative separation of titanium(IV) from iron(III) and other metals was achieved.
• The dried complex has a defined composition [TiO(OH)(C11H8O2N)]2 and exhibits non-electrolyte properties.

Conclusions:

• 2-Hydroxy-1-naphthaldoxime is a highly selective and sensitive reagent for the gravimetric determination of titanium(IV).
• The proposed method is reliable for analyzing titanium in complex matrices like ilmenite, showing good agreement with established techniques.
• The dimeric structure of the titanium complex was elucidated through comprehensive analytical data.