Solubility: Gypsum is moderately soluble in drinking water, which has a solubility of about two grams per liter at twenty five°C. Curiously, gypsum reveals retrograde solubility, this means its solubility decreases as water temperature improves – unlike most salts that become more soluble in very hot water. Crystal Procedure: Gypsum https://www.propanraya.com/id/produk/eco-gypsum-ee-4050