On the existence of ethylenediaminetetraacetic acid (EDTA) doped zinc sulphate heptahydrate crystal
Bikshandarkoil R. Srinivasan
TL;DR
This paper critically examines a previous claim of EDTA doping in zinc sulphate heptahydrate crystals, concluding that the reported crystal is actually the well-known undoped form.
Contribution
It clarifies that the previously reported EDTA-doped zinc sulphate heptahydrate crystal is actually just the standard zinc sulphate heptahydrate, correcting a misidentification.
Findings
The reported EDTA doping is not present in the crystal.
The crystal is identified as pure zinc sulphate heptahydrate.
The paper corrects the scientific record regarding this crystal.
Abstract
It is argued that the ethylenediaminetetraacetic acid (EDTA) doped zinc sulphate heptahydrate crystal reported by Raja et al Spectrochim Acta 99A (2012) 23 is the well known zinc sulphate heptahydrate.
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Taxonomy
TopicsNonlinear Optical Materials Research · Crystallization and Solubility Studies · Solid-state spectroscopy and crystallography