The role of impurities on the process of growing potassium hydrogen phthalate crystals from solution; A quantitative approach
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Temperature-induced pH changes govern hydrate transformation during cooling crystallization of potassium acid phthalate
2021, Chemical Engineering Research and DesignCitation Excerpt :Furthermore, the KAP crystals can also form a hydrate form. Hydrate form is known to affect the mechanical, optical, flowability, and dissolution properties of crystals (Enculescu, 2010; Grabovskiǐ et al., 2003; Hottenhuis and Lucasius, 1988). In this article, we begin with investigations into the existence of different possible crystals and morphologies by spanning a wide range of operating conditions using drop and batch crystallization.
Growth and characterizations of a new semiorganic nonlinear optical material thiourea potassium hydrogen phthalate for NLO applications
2016, Materials Chemistry and PhysicsCitation Excerpt :Highly delocalized π-electrons induces molecular charge transfer in semiorganics, which make π-electrons easily move between electron donor and electron acceptor groups on opposite sides of the molecule [5,6]. Noncentrosymmetric Potassium hydrogen phthalate semiorganic crystal (KHP) is a mono–potassium salt of phthalic acid, widely used in the field of X-ray spectroscopy as monochromator, substrate for the deposition of thin films of organic NLO materials and analyzer with optical, piezoelectric and elastic properties [7–10]. KHP is slightly acidic, dissociates completely in water, giving the potassium cation (K+) and hydrogen phthalate anion (HP−).
The effect of Fe<sup>3+</sup> doping in Potassium Hydrogen Phthalate single crystals on structural and optical properties
2011, Physica B: Condensed MatterCitation Excerpt :Potassium Hydrogen Phthalate (KHP) with low concentrations, i.e. in ppm range of Fe3+ ions were reported and their spiral growth morphology on the (0 1 0) plane of KHP were analyzed [21]. The effects of various kinds of impurities on spiral growth phenomena on the (0 1 0) plane of KHP crystal shows the existence of different mechanisms of interaction [22,23]. Detailed investigations on surface morphology and growth kinetics of the KHP (0 1 0) plane have been discussed [24].