Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 59: Issue 3
Solid–liquid Equilibria in the Quaternary System Na+, Mg2+//Cl–, SO2–4–H2O at 25 and 30°C
Authors:
L. Zayani Institut National de Recherche Scientifique et Technique Laboratoire de Génie des Procédés B.P. 95 Hammam-Lif 2050 Tunisia B.P. 95 Hammam-Lif 2050 Tunisia

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R. Rokbani Institut National de Recherche Scientifique et Technique Laboratoire de Génie des Procédés B.P. 95 Hammam-Lif 2050 Tunisia B.P. 95 Hammam-Lif 2050 Tunisia

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Pages:
885–892
Online Publication Date:
02 Nov 2004
Publication Date:
01 Mar 2000
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010126409399
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Abstract  

The isoplethic sections in the diagram of the quaternary system Na+ , Mg2+ //Cl– , SO2–4 –H2 O were established at 25 and 30oC by analytical and conductometric measurements. Three compounds can be observed in the isoplethic sections: NaCl, Na2 SO4 and MgNa2 (SO4 )2 4 H2 O. Seven fields are determined, relating to the precipitation of one, two or three salts. The solubility range of MgNa2 (SO4 )2 4 H2 O is wide, while the liquidus curve of Na2 SO4 is very short. The compositions, expressed in Jnecke coordinates, at the eutonic and peritonic points, respectively, were: 42.70% Cl– and 745% H2 O; 79.47% Cl– and 787% H2 O; 71.6% Cl– and 744% H2 O at 25C; and 48.80% Cl– and 715% H2 O; 80.20% Cl– and 778% H2 O; 70.14% Cl– and 707% H2 O at 30C.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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