Solubility: Gypsum Is moderately soluble in h2o, by using a solubility of about two grams for each liter at twenty five°C. Curiously, gypsum reveals retrograde solubility, indicating its solubility decreases as water temperature raises – not like most salts that turn into more soluble in scorching water. Agriculture: Soil Conditioner: https://www.propanraya.com/id/produk/eco-gypsum-ee-4050