Polyfunctional Derivatives of Imidodiphosphoric Acid as Extractants

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Title:Polyfunctional Derivatives of Imidodiphosphoric Acid as Extractants
Creators:
Navrátil, Oldřich
Sládek, Petr
Tokárová, Alena
Herrmann, Eckhard
Nouaman, Moein
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 62, 4, pp. 620-625
Uncontrolled Keywords:Calcium, Strontium, Polyfunctional analogs of imidodiphosphoric acid, Barium, Solvent extraction, Scandium

Abstract

The distribution of calcium, strontium, barium and scandium between aqueous and organic phases was studied using 0.1 M HNO<sub>3</sub> or 0.01 to 0.1 M HCl as the aqueous phase and solutions of selected derivatives of organophosphoric reagents containing the conventional =P(O)NHP(O)= bifunctional group or the analogous trifunctional or tetrafunctional group in various organic solvents as the organic phase. The effect of substitution of one ester group by an OH or NH<sub>2</sub> group was examined. While for the alkaline earth metals the distribution ratio increases if the bifunctional group is replaced by a higher-functional group, the reverse is true for scandium. The extraction efficiency is improved by the presence of OH or NH<sub>2</sub> substituent groups. The composition of the extracted species was inferred by logarithmic analysis and the corresponding extraction constants were calculated.

Title:Polyfunctional Derivatives of Imidodiphosphoric Acid as Extractants
Creators:
Navrátil, Oldřich
Sládek, Petr
Tokárová, Alena
Herrmann, Eckhard
Nouaman, Moein
Uncontrolled Keywords:Calcium, Strontium, Polyfunctional analogs of imidodiphosphoric acid, Barium, Solvent extraction, Scandium
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:62
Number:4
Page Range:pp. 620-625
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19970620UNSPECIFIED
ID Code:1144
Item Type:Article
Deposited On:06 Feb 2009 17:07
Last Modified:06 Feb 2009 16:07

Citation

Navrátil, Oldřich; Sládek, Petr; Tokárová, Alena; Herrmann, Eckhard; Nouaman, Moein (1997) Polyfunctional Derivatives of Imidodiphosphoric Acid as Extractants. Collection of Czechoslovak Chemical Communications, 62 (4). pp. 620-625. ISSN 0010-0765

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