Solubility: Gypsum Is reasonably soluble in water, with a solubility of about 2 grams for every liter at twenty five°C. Curiously, gypsum exhibits retrograde solubility, that means its solubility decreases as drinking water temperature boosts – compared with most salts that develop into much more soluble in warm drinking water. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050