Solubility: Gypsum Is moderately soluble in water, which has a solubility of about two grams per liter at 25°C. Curiously, gypsum displays retrograde solubility, indicating its solubility decreases as drinking water temperature increases – contrary to most salts that turn out to be a lot more soluble in hot h2o. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050