Premium
Crystallization and Characterization of Orthorhombic β‐MgSO 4 · 7H 2 O
Author(s) -
Ramalingom S.,
Podder J.,
Narayana Kalkura S.
Publication year - 2001
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/1521-4079(200112)36:12<1357::aid-crat1357>3.0.co;2-7
Subject(s) - orthorhombic crystal system , supersaturation , crystallization , impurity , crystal habit , aqueous solution , crystal (programming language) , metastability , materials science , crystal growth , crystallography , chemistry , analytical chemistry (journal) , chemical engineering , crystal structure , chromatography , organic chemistry , engineering , programming language , computer science
In solution, the growth rate and the crystal habit are influenced by a number of factors such as supersaturation, temperature, pH of the solution, cooling rate, agitation, viscosity, initial state of the seed crystal and the presence of impurities. The crystallization of orthorhombic β‐MgSO 4 · 7H 2 O, from low temperature aqueous solution by slow cooling process was studied. The metastable zone width, the induction periods (τ) for different supersaturations and the effect of pH on the growth rate of the crystals were investigated. The increase of pH yielded bigger crystals. The structural, optical, thermal and mechanical properties of β‐MgSO 4 · 7H 2 O have been studied using FT‐IR, X‐ray diffraction, TGA‐DTG and micro hardness analyses.