Abstract
Nitrilotriacetamide (NTAA) causes dendritic growth of NaCl crystals. The sizes of the cubic blocks in the dendritic branches of NaCl are inversely proportional to the concentrations of NTAA in the growth solutions. The degree of dendritic complexity, demonstrated by SEM photomicrographs, is explained by its dependence on the supersaturation, in analogy to snow crystal growth. A possible mechanism, based on secondary nucleation, is presented.
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