STUDY OF THE AQUEOUS SOLUBILITY AND THERMAL-BEHAVIOR OF AMMONIUM TRIS-OXALATO ALUMINATE-(III) AND ITS HYDRATES - (NH4)(3)AL(C2O4)(3).XH(2)O, X=0,2,3

Authors
EZAHRI M COFFY G CHASSAGNEUX F MENTZEN BF
Citation
M. Ezahri et al., STUDY OF THE AQUEOUS SOLUBILITY AND THERMAL-BEHAVIOR OF AMMONIUM TRIS-OXALATO ALUMINATE-(III) AND ITS HYDRATES - (NH4)(3)AL(C2O4)(3).XH(2)O, X=0,2,3, European journal of solid state and inorganic chemistry, 31(5), 1994, pp. 391-399
Citations number
14
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
European journal of solid state and inorganic chemistry → ACNP
ISSN journal
09924361
Volume
31
Issue
5
Year of publication
1994
Pages
391 - 399
Database
ISI
SICI code
0992-4361(1994)31:5<391:SOTASA>2.0.ZU;2-A
Abstract
The study of the H2O - (NH4)(3)Al(C2O4)(3) binary system, using thermo gravimetric analysis and X-ray diffraction techniques, allowed the det ermination of the stability domains of (NH4)(3)Al(C2O4)(3).3H(2)O, (NH 4)(3)Al(C2O4)(3).2H(2)O and the anhydrous salt. The X-ray powder diffr action profiles are reported for each of the three phases. The solubil ity diagram has been established : it shows a peritectic decomposition for both hydrates at 86 and 102 degrees C respectively. The anhydrous salt is stable upto 180 degrees C and is totally decomposed at 350 de grees C.