Solubility: Gypsum is moderately soluble in h2o, having a solubility of about 2 grams for each liter at 25°C. Apparently, gypsum displays retrograde solubility, this means its solubility decreases as h2o temperature will increase – contrary to most salts that grow to be more soluble in very hot water. Gypsum https://www.propanraya.com/id/produk/eco-gypsum-ee-4050