Application of the Reaction of Promazine Hydrochloride With Chromium(vi) in Volumetric and Spectrophotometric Analysis

Misiuk, Wieslawa; Puzanowska-Tarasiewicz, Helena; Kuźmicka, Ludmiła; Mielech, Katarzyna

doi:10.1081/tma-120006677

Cited by 6 publications

(8 citation statements)

References 13 publications

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“…standard hydrogen electrode) allow only the first step of the oxidation reaction of phenothiazines, and do not proceed to the second step. 20,21 This situation is illustrated on Fig. 1.…”

mentioning

confidence: 99%

Efficient Oxidizing Agents for Determination of 2,10-Disubstituted Phenothiazines

Puzanowska-Tarasiewicz

Kuźmicka

Karpińska

et al. 2005

ANAL. SCI.

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“…standard hydrogen electrode) allow only the first step of the oxidation reaction of phenothiazines, and do not proceed to the second step. 20,21 This situation is illustrated on Fig. 1.…”

mentioning

confidence: 99%

Efficient Oxidizing Agents for Determination of 2,10-Disubstituted Phenothiazines

Puzanowska-Tarasiewicz

Kuźmicka

Karpińska

et al. 2005

ANAL. SCI.

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“…Phenothiazines can be the basis for the development of a number of volumetric and spectrophotometric methods. The ability of phenothiazines to oxidize in an acid medium by K 2 Cr 2 O 7 , NH 4 VO 3 , and Ce(SO 4 ) 2 has been exploited as indicators in various redox titrations (Karpiń ska, Starczewska, and Puzanowska-Tarasiewicz 1996;Belcher, PuzanowskaTarasiewicz, and Stephen 1977;Misiuk et al 2002) and as reagents for the spectrophotometric determination of metals (Gowda and Raj 1982;Gowda and Keshavan 1977;Gowda, Gowda, and Gowda 1985) and phenothiazines Tarasiewicz 1993, 1996;Basavaiah and Swamy 2001a). Basavaiah and Swamy (2001b) used potassium periodate and hexacyanoferrate(III) for microdetermination of phenothiazines.…”

Section: Introductionmentioning

confidence: 99%

Analytical Application of the Binary and Ternary Complexes of 2,10-Disubstituted Phenothiazines

Puzanowska-Tarasiewicz

Kuźmicka

Misiuk

et al. 2008

Analytical Letters

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Phenothiazines (PT) are an important family of compound from a medical point of view. They are widely used among the tricyclic antidepressants. Their application in therapy requires methods for their determination in pharmaceuticals and body fluids. The extractive-spectrophotometric methods are very useful for these determinations. They are based on the formation of the binary and ternary complexes. Phenothiazines react with some organic substances (e.g., picric acid, alizarin S, bromocresol green, and triphenylmethane dyes) as well as with thiocyanate or halide complexes of metals [e.g., Co(II), Pd(II), Fe(III), Cr(III), Au(III), Ti(IV), Pt(IV), Mo(V), W(V), U(VI)] forming welldefined ion-association compounds. The compounds are sparingly soluble in water but quantitatively extracted from the aqueous phase into organic solvents. The extracts are intensely colored and stable for a few days. These properties are the basis for utilizing the binary and ternary complexes of phenothiazines in chemical and pharmaceutical analysis. This review described the analytical application of these complexes.

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“…They have reacted with some metal ions or thiocyanate complexes of metals forming colored, hard soluble in water but easy soluble in organic solvents compounds [ 1 , 10 ]. Some organic substances (e.g., picric, flavianic acid, alizarin S, brilliant blue, pyrocatechol violet) have formed with 2,10-disubstituted phenothiazines colored ion-association compounds sparingly soluble in water, but quantitatively extracted into organic phase [ 10 , 11 ]. The conducted spectroscopic studies have confirmed ion-association nature of these conjunctions [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…Some organic substances (e.g., picric, flavianic acid, alizarin S, brilliant blue, pyrocatechol violet) have formed with 2,10-disubstituted phenothiazines colored ion-association compounds sparingly soluble in water, but quantitatively extracted into organic phase [ 10 , 11 ]. The conducted spectroscopic studies have confirmed ion-association nature of these conjunctions [ 10 , 11 ]. Phenothiazines also have created charge-transfer complexes with nitroso-R-salt [ 12 ] and chloranilic acid [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Analytical Applications of Reactions of Iron(III) and Hexacyanoferrate(III) with 2,10‐Disubstituted Phenothiazines

Puzanowska-Tarasiewicz

Karpińska

Kuźmicka³

2009

International Journal of Analytical Chemistry

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The presented review is devoted to analytical applications of reactions of Fe(III) and K3[Fe(CN)6] with 2,10-disubstituted phenothiazines (PT). It was found that iron(III) and hexacyanoferrate(III) ions in acidic media easily oxidized PT with the formation of colored oxidation products. This property has been exploited for spectrophotometric determination of iron(III) ions and phenothiazines. Some flow-injection procedures of the determination of PT based on the oxidation reaction by means of the above-mentioned oxidants have been proposed. In the presented review, the application of 2,10-disubstituted phenothiazines as indicators in complexometric titration of iron(III) as well as procedures of PT determination based on generation of ternary compound in the system Fe(III)-SCN−- PT was also described.

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Application of the Reaction of Promazine Hydrochloride With Chromium(vi) in Volumetric and Spectrophotometric Analysis

Cited by 6 publications

References 13 publications

Efficient Oxidizing Agents for Determination of 2,10-Disubstituted Phenothiazines

Efficient Oxidizing Agents for Determination of 2,10-Disubstituted Phenothiazines

Analytical Application of the Binary and Ternary Complexes of 2,10-Disubstituted Phenothiazines

Analytical Applications of Reactions of Iron(III) and Hexacyanoferrate(III) with 2,10‐Disubstituted Phenothiazines

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