Experimental Densities, Speeds of Sound, Isentropic Compressibilties and Shear Relaxation Times of CaSO4·2H2O + CaCl2 + H2O and CaSO4·2H2O + NaCl + H2O Systems at Temperatures 30 and 35 °C

Effect of Organic Additives on the Solubility Behavior and Morphology of Calcium Sulfate Dihydrate (Gypsum) in the Aqueous Sodium Chloride System and Physicochemical Solution Properties at 35 °C

“…The solubility of gypsum in brines has been extensively studied in the past. − Freyer and Vogt and Marshall and Slusher have nicely compiled the data in detail on crystallization, phase stability, and solubility behavior of CaSO 4 ·2H 2 O in aqueous solution as well as in aqueous solutions of different electrolytes. Sensing the importance of such studies, we have also initiated a research program on the aqueous electrolyte solutions saturated with CaSO 4 ·2H 2 O and reported a number of physicochemical properties for the ternary systems (CaSO 4 ·2H 2 O + NaCl + H 2 O and CaSO 4 ·2H 2 O + CaCl 2 + H 2 O) − and quaternary systems (CaSO 4 ·2H 2 O + NaCl + CaCl 2 + H 2 O and CaSO 4 ·2H 2 O + NaCl + MgCl 2 + H 2 O) , in the past few years. The effect of pH on the solubility of CaSO 4 ·2H 2 O in the system CaSO 4 ·2H 2 O + NaCl + H 2 O has also been examined by our research group …”

Effect of Ethylene Glycol and Its Derivatives on the Solubility Behavior of CaSO4·2H2O in the Aqueous NaCl System and Physicochemical Solution Properties at 35 °C

“…Therefore, it is quite important to have accurate data on solubility and other physical properties of systems where CaSO 4 ·2H 2 O is an important constituent. In the past a lot of research work has been done on the solubility related problems of aqueous sodium chloride systems saturated with gypsum. − Research papers of Daniela and Wolfgang and Raju and Atkinson provide a detailed review of the crystallization, phase stability, and solubility of CaSO 4 ·2H 2 O in aqueous solution as well as in aqueous solutions of different electrolytes. , Recently we studied a number of physicochemical properties for the ternary systems (CaSO 4 ·2H 2 O + NaCl + H 2 O and CaSO 4 ·2H 2 O + CaCl 2 + H 2 O) and quaternary systems (CaSO 4 ·2H 2 O + NaCl + CaCl 2 + H 2 O and CaSO 4 ·2H 2 O + NaCl + MgCl 2 + H 2 O) and have also examined the effect of pH on the solubility of CaSO 4 ·2H 2 O in the system CaSO 4 ·2H 2 O + NaCl + H 2 O. − …”

“…[3][4][5][6] Research papers of Daniela and Wolfgang and Raju and Atkinson provide a detailed review of the crystallization, phase stability, and solubility of CaSO 4 • 2H 2 O in aqueous solution as well as in aqueous solutions of different electrolytes. 7,8 Recently we studied a number of physicochemical properties for the ternary systems (CaSO 4 [9][10][11][12][13][14] In continuation of the ongoing research work herein we have investigated the effect of organic solvents (ethylene glycol and its derivatives) on the solubility behavior of CaSO 4 • 2H 2 O in brines. The investigations on the solubility of inorganic salts and solution properties in mixed water-organic solvent are useful in drowning out precipitation of soluble salts at ambient temperature and obtaining crystals of high purity, desired size, and morphology.…”

Effect of Nitrate Salts on Solubility Behavior of Calcium Sulfate Dihydrate (Gypsum) in the Aqueous Sodium Chloride System and Physicochemical Solution Properties at 308.15 K

“…Physical phenomenon such as crystallization, phase stability, and solubility behavior of CaSO 4 ·2H 2 O in aqueous solution as well as in aqueous solutions containing electrolytes have been widely investigated. , In particular, the solubility behavior of CaSO 4 ·2H 2 O in brines has been extensively studied in the past. − Our research group is also actively engaged on a research program concerning investigations on solubility behavior of CaSO 4 ·2H 2 O in brines in presence of various electrolytes − and nonelectrolytes, , and measurements on solution properties of such systems. As far as electrolytes containing systems are concerned, we have reported solubility behavior CaSO 4 ·2H 2 O and other physicochemical properties for the ternary systems (CaSO 4 ·2H 2 O + NaCl + H 2 O and CaSO 4 ·2H 2 O + CaCl 2 + H 2 O), − quaternary systems (CaSO 4 ·2H 2 O + NaCl + CaCl 2 + H 2 O and CaSO 4 ·2H 2 O + NaCl + MgCl 2 + H 2 O) , in the past few years.…”