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The growth of sodium nitrate from mixtures of water and isopropoxyethanol

Authors
Journal
Journal of Crystal Growth
0022-0248
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/s0022-0248(98)01156-7
Keywords
  • Antisolvent Crystallisation
  • Microscopic Observation
  • Crystal Growth
  • Sodium Nitrate
  • Isopropoxyethanol

Abstract

Abstract The growth of sodium nitrate was studied in a microscopic setup; crystals were nucleated and grown from mixtures of water and isopropoxyethanol (IPE). The phase diagram of the IPE/water system saturated with sodium nitrate and the solubility of NaNO 3 in aqueous mixtures with IPE were determined. The growth rate was found to be dependent linearly on the concentration difference ( c–c ∗ ). Mass transfer constant k D decreased with increasing weight fraction of isopropoxyethanol in the mixture and was predicted accurately from density, viscosity and solubility data only. No changes in crystal morphology were observed.

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