Solubility: Gypsum is moderately soluble in h2o, by using a solubility of about 2 grams for each liter at 25°C. Curiously, gypsum displays retrograde solubility, meaning its solubility decreases as h2o temperature improves – in contrast to most salts that turn out to be additional soluble in incredibly hot h2o. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050