Standardization of dilute solutions of EDTA by photometric titration with standard tetraamminecopper(II) titrant

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Title:Standardization of dilute solutions of EDTA by photometric titration with standard tetraamminecopper(II) titrant
Creators:
Mach, Vladimír
Kotrlý, Stanislav
Říha, Václav
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 56, 9, pp. 1850-1855

Abstract

Direct photometric titration (without an added indicator) using a standard ammoniacal solution of copper(II) prepared from pure copper metal asa primary standard is recommended as a reliable method for the standardization of Na<sub>2</sub>H<sub>2</sub>(edta) in 10<sup>-3</sup> -5 . 10<sup>-4</sup>M solutions. The technique of photometric microtitration (720 nm, 50 mm cell) with an increased precision of transmittance reading (<i>s</i> ~10<sup>-2</sup>%, <i>n</i> > 7) and in optimum medium of pH 4.7 ± 0.4 (acetate buffer) can yield precise results in assays of EDTA (<i>s</i><sub>r</sub> ⪬ 10<sup>-1</sup>%, <i>n</i> = 6-9).

Title:Standardization of dilute solutions of EDTA by photometric titration with standard tetraamminecopper(II) titrant
Creators:
Mach, Vladimír
Kotrlý, Stanislav
Říha, Václav
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:56
Number:9
Page Range:pp. 1850-1855
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19911850UNSPECIFIED
ID Code:5110
Item Type:Article
Deposited On:22 Feb 2010 11:30
Last Modified:22 Feb 2010 10:31

Citation

Mach, Vladimír; Kotrlý, Stanislav; Říha, Václav (1991) Standardization of dilute solutions of EDTA by photometric titration with standard tetraamminecopper(II) titrant. Collection of Czechoslovak Chemical Communications, 56 (9). pp. 1850-1855. ISSN 0010-0765

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