Solubility: Gypsum is moderately soluble in water, using a solubility of about 2 grams for each liter at 25°C. Curiously, gypsum exhibits retrograde solubility, which means its solubility decreases as drinking water temperature improves – contrary to most salts that develop into a lot more soluble in warm drinking water. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050