Solubility: Gypsum is moderately soluble in drinking water, using a solubility of about 2 grams for each liter at twenty five°C. Curiously, gypsum reveals retrograde solubility, that means its solubility decreases as water temperature improves – compared with most salts that develop into far more soluble in sizzling drinking water. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050