Is Dual Morphology of Rock-Salt Crystals Possible with a Single Additive? The Answer Is Yes, with Barbituric Acid

Authors

  • Anik Sen,

    1. Analytical Discipline & Centralized Instrument Facility, Central Salt and Marine Chemicals Research Institute, G.B. Marg, Bhavnagar, Gujarat-364002 (India)
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  • Dr. Bishwajit Ganguly

    Corresponding author
    1. Analytical Discipline & Centralized Instrument Facility, Central Salt and Marine Chemicals Research Institute, G.B. Marg, Bhavnagar, Gujarat-364002 (India)
    • Analytical Discipline & Centralized Instrument Facility, Central Salt and Marine Chemicals Research Institute, G.B. Marg, Bhavnagar, Gujarat-364002 (India)
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  • B.G. thanks DST (New Delhi) & (MSM, CSIR, India) for support. A.S. acknowledges UGC (New Delhi, India) for an SRF. Instrumental support received from the ADCIF and DIMC, CSMCRI, is gratefully acknowledged. We thank Dr. P. Paul for his helpful discussions and Dr. P. K. Ghosh (Director) CSMCRI, Bhavnagar for his keen interest in this work. We also thank the reviewers for insightful suggestions.

Abstract

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Crystal face lift: Barbituric acid is shown to be a new crystal-habit modifier for sodium chloride crystals (see scheme). Two morphologies of salt crystals can be prepared separately with this new additive. It is of the few additives able to induce rhombic dodecahedron crystals for NaCl, and is required only a trace of amount, unlike other additives, such as glycine.

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