Solubility: Gypsum is moderately soluble in h2o, using a solubility of about 2 grams for every liter at 25°C. Apparently, gypsum reveals retrograde solubility, meaning its solubility decreases as h2o temperature boosts – unlike most salts that develop into much more soluble in scorching drinking water. Hydration of Anhydrite: Gypsum https://www.propanraya.com/id/produk/eco-gypsum-ee-4050