Abstract
Single crystals of l-arginine hydrochloride monohydrate (LAHCl) were successfully grown at ambient temperature (28.5°C) from its aqueous solution (pH=5.4) by slow evaporation as well as by slow cooling methods.The as-grown crystal is of dimensions 2.8×4.5×1.2 cm 3. Studies on the structural, chemical and thermal properties of the crystal have been carried out on the basis of X-ray diffraction (XRD), infrared spectroscopy (IR), carbon, hydrogen, nitrogen (CHN) analysis, thermogravimetric (TG) analysis and differential thermal analysis (DTA) measurements. IR absorption bands indicate the mode of vibrations of different molecular groups present in LAHCl. TG-DTA analysis gives an idea about the thermal behaviour of LAHCl and ruled out the possibility of structural changes independent of mass changes.
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