Protonation equilibria of carminic acid and stability constants of its complexes with some divalent metal ions in aqueous solution

Hasan Atabey; Hayati Sari; Faisal N. Al-Obaidi

doi:10.1007/s10953-012-9830-7

Protonation equilibria of carminic acid and stability constants of its complexes with some divalent metal ions in aqueous solution

Hasan Atabey, Hayati Sari^*, Faisal N. Al-Obaidi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

The dissociation constants of carminic acid (7-D-glucopyronosyl-3,5,6,8-tetra- hydroxy-1-methyl-9,10-dioxo-anthracene-2-carboxylic acid) (CA), together with the stability constants of its Cu(II), Zn(II), Ni(II), Co(II) and Hg(II) complexes, were studied potentiometrically in aqueous medium at 25.0 (1) A degrees C, and at the ionic background of 0.1 mola Zn(II) > Ni(II) > Co(II) > Hg(II).

Original language	English
Pages (from-to)	793-803
Number of pages	11
Journal	Journal of Solution Chemistry
Volume	41
Issue number	5
DOIs	https://doi.org/10.1007/s10953-012-9830-7
Publication status	Published - Jun 2012
Externally published	Yes

Keywords

Carminic acid
Potentiometric titration
Stability constant
Protonation constant
SUPERQUAD
SPECTROPHOTOMETRIC DETERMINATION
PK(A) VALUES
CALIBRATION
COCHINEAL
WATER
PH

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title = "Protonation equilibria of carminic acid and stability constants of its complexes with some divalent metal ions in aqueous solution",

abstract = "The dissociation constants of carminic acid (7-D-glucopyronosyl-3,5,6,8-tetra- hydroxy-1-methyl-9,10-dioxo-anthracene-2-carboxylic acid) (CA), together with the stability constants of its Cu(II), Zn(II), Ni(II), Co(II) and Hg(II) complexes, were studied potentiometrically in aqueous medium at 25.0 (1) A degrees C, and at the ionic background of 0.1 mola Zn(II) > Ni(II) > Co(II) > Hg(II).",

keywords = "Carminic acid, Potentiometric titration, Stability constant, Protonation constant, SUPERQUAD, SPECTROPHOTOMETRIC DETERMINATION, PK(A) VALUES, CALIBRATION, COCHINEAL, WATER, PH",

author = "Hasan Atabey and Hayati Sari and Al-Obaidi, {Faisal N.}",

year = "2012",

month = jun,

doi = "10.1007/s10953-012-9830-7",

language = "English",

volume = "41",

pages = "793--803",

journal = "Journal of Solution Chemistry",

issn = "0095-9782",

publisher = "Springer, Springer Nature",

number = "5",

}

TY - JOUR

T1 - Protonation equilibria of carminic acid and stability constants of its complexes with some divalent metal ions in aqueous solution

AU - Atabey, Hasan

AU - Sari, Hayati

AU - Al-Obaidi, Faisal N.

PY - 2012/6

Y1 - 2012/6

N2 - The dissociation constants of carminic acid (7-D-glucopyronosyl-3,5,6,8-tetra- hydroxy-1-methyl-9,10-dioxo-anthracene-2-carboxylic acid) (CA), together with the stability constants of its Cu(II), Zn(II), Ni(II), Co(II) and Hg(II) complexes, were studied potentiometrically in aqueous medium at 25.0 (1) A degrees C, and at the ionic background of 0.1 mola Zn(II) > Ni(II) > Co(II) > Hg(II).

AB - The dissociation constants of carminic acid (7-D-glucopyronosyl-3,5,6,8-tetra- hydroxy-1-methyl-9,10-dioxo-anthracene-2-carboxylic acid) (CA), together with the stability constants of its Cu(II), Zn(II), Ni(II), Co(II) and Hg(II) complexes, were studied potentiometrically in aqueous medium at 25.0 (1) A degrees C, and at the ionic background of 0.1 mola Zn(II) > Ni(II) > Co(II) > Hg(II).

KW - Carminic acid

KW - Potentiometric titration

KW - Stability constant

KW - Protonation constant

KW - SUPERQUAD

KW - SPECTROPHOTOMETRIC DETERMINATION

KW - PK(A) VALUES

KW - CALIBRATION

KW - COCHINEAL

KW - WATER

KW - PH

U2 - 10.1007/s10953-012-9830-7

DO - 10.1007/s10953-012-9830-7

M3 - Article

VL - 41

SP - 793

EP - 803

JO - Journal of Solution Chemistry

JF - Journal of Solution Chemistry

SN - 0095-9782

IS - 5

ER -

Protonation equilibria of carminic acid and stability constants of its complexes with some divalent metal ions in aqueous solution

Abstract

Keywords

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