Solubility: Gypsum Is moderately soluble in h2o, by using a solubility of about two grams for each liter at 25°C. Curiously, gypsum reveals retrograde solubility, that means its solubility decreases as water temperature raises – as opposed to most salts that come to be extra soluble in hot drinking water. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050