Solubility: Gypsum is reasonably soluble in water, using a solubility of about two grams per liter at 25°C. Apparently, gypsum exhibits retrograde solubility, that means its solubility decreases as drinking water temperature raises – compared with most salts that come to be far more soluble in sizzling drinking water. Gypsum https://www.propanraya.com/id/produk/eco-gypsum-ee-4050