Selective Complexometric Determination of Titanium(IV) Using Sodium Potassium Tartrate or Ascorbic Acid as Masking Agent

Sreekumar, N. V.; Bhat, N. Gopalakrishna; Narayana, B.; Nazareth, Ronald Aquin; Hegde, Prashant; Manjunatha, B.R.

doi:10.1007/s00604-002-0922-8

Cited by 4 publications

(3 citation statements)

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“…The estimated TiCl 4 concentration from weight/volume calculations was confirmed by a modification of published titration methods. 22,23 0.1 M EDTA(aq) was standardised against 0.01 M CaCO 3 (aq) primary standard, and 0.1 M ZnSO 4 (aq) was standardised against the EDTA solution. A sample of the TiCl 4 solution was added to 5 mL of 3 M H 2 SO 4 (aq) and heated to drive off CH 2 Cl 2 .…”

Section: Methodsmentioning

confidence: 99%

Rapid degradation of cyclic peroxides by titanium and antimony chlorides

et al. 2015

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First responders face extraordinary risks when dealing with organic peroxides such as TATP due to the extreme sensitivity of this class of explosives, and to a lack of a robust chemical means of safe and rapid neutralisation. The Lewis acids TiCl4 and SbCl3 have been found to demonstrate a novel degradation mechanism, with TiCl4 degrading a model cyclic peroxide in minutes when used in a two-fold excess, or ∼3 hours at half equivalence. The products cannot re-form peroxide compounds as is the case with acid degradation, suggesting the two mechanisms are fundamentally different. The Lewis acids mediate a rearrangement reaction in the cyclic peroxide backbone leading to relatively innocuous products through deactivation of oxidising O. Sub-stoichiometric TiCl4 reactions highlight a secondary reaction pathway that also leads to some oxidative chlorination products, possibly mediated by an unconfirmed titanium-oxychloride species. SbCl3 was found to exhibit similar reactivity to TiCl4, although at a slower rate. A mechanism is proposed, consistent with the observations for both stoichiometric and sub-stoichiometric quantities of TiCl4.

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Section: Methodsmentioning

confidence: 99%

Rapid degradation of cyclic peroxides by titanium and antimony chlorides

et al. 2015

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“…Chloride contents were determined volumetrically using AgNO 3 [17]. Complexometric EDTA back-titration was performed for the analysis of titanium contents in which sodium potassium tartrate was used as a masking agent in the presence of indicator xylenol orange (1 g in 100 g KNO 3 ) [18].…”

Section: Methodsmentioning

confidence: 99%

Chemistry and antioxidant properties of titanium(IV) complexes

Shaikh

Ashiq

Jamal

et al. 2015

Transition Met Chem

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The synthesis of titanium(IV) complexes with biologically active hydrazide ligands has been carried out. The complexes were characterized by spectroscopic methods (IR, 1 H NMR and 13 C NMR), elemental analysis and conductivity studies. These studies suggest bidentate coordination of the ligands through carbonyl oxygen and primary amine nitrogen, resulting in octahedral geometries. Hydrazides with pyridyl substituents displayed 1:2 metalto-ligand ratio, and hydrazides with imino substituents exhibited 1:3 metal-to-ligand ratio resulting in an outer sphere complex. The remaining complexes displayed inner sphere coordination with 1:1 metal-to-ligand ratio. These complexes exhibit varying degrees of radical scavenging properties against DPPH, superoxide and nitric oxide free radicals. The free ligands showed inhibition against DPPH but were inactive against superoxide and nitric oxide free radicals. The structure-activity relationships of the complexes are discussed.

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“…EDTA disodium salt is a kind of complexing agent with a chemical formula of C10H12N2O8 (where Y is C10H12N2O8) and has capability to react with most of the metal ions and forms a soluble complex compound. 17 The possible chemical reactions which occur in the mixture of NaCl, NaNO 3 and EDTA of titanium alloy grade 5 (Ti6Al4V) are:…”

Section: Anodic Dissolution Of Titanium In Edtamentioning

confidence: 99%

Investigation of pulsed electrochemical micro-drilling on titanium alloy in the presence of complexing agent in electrolyte

Tak

Mishra

et al. 2018

Journal of Micromanufacturing

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Titanium and its alloys have excellent mechanical and chemical properties; however, these properties make the processing of titanium alloys more challenging compared with other engineering materials. Electrochemical micromachining (ECMM) is a non-conventional machining process, which removes material through anodic dissolution regardless of the material’s hardness. However, during the electrochemical machining of titanium, the formation of a passive oxide layer inhibits further material removal and deteriorates the machined surface quality. In addition, the accuracy of micromachining of titanium alloys is especially affected by the formation of electrolysis precipitates such as TiO2 and stray current dissolution. In this study, the effect of the addition of the complexing agent to different electrolytic solutions on the radial overcut during micro-drilling of titanium alloy grade 5 (Ti6Al4V) has been experimentally studied using the in-house developed ECMM set-up. The influence of parameters such as applied voltage and different electrolytic concentration with and without the complexing agent on overcut during ECMM on Ti6Al4V of micro-holes has been studied. It has been safely concluded that the quality of micro-holes fabricated in the presence of EDTA in the electrolyte while machining is responsible for better dimensional characteristics.

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Selective Complexometric Determination of Titanium(IV) Using Sodium Potassium Tartrate or Ascorbic Acid as Masking Agent

Cited by 4 publications

References 0 publications

Rapid degradation of cyclic peroxides by titanium and antimony chlorides

Rapid degradation of cyclic peroxides by titanium and antimony chlorides

Chemistry and antioxidant properties of titanium(IV) complexes

Investigation of pulsed electrochemical micro-drilling on titanium alloy in the presence of complexing agent in electrolyte

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