Solubility: Gypsum is moderately soluble in drinking water, having a solubility of about two grams for every liter at 25°C. Apparently, gypsum reveals retrograde solubility, that means its solubility decreases as drinking water temperature raises – compared with most salts that turn into a lot more soluble in sizzling water. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050