kalciumszulfáthemihidrát

Kalciumszulfát is a chemical compound with the formula CaSO₄. It is a white, crystalline solid that is sparingly soluble in water. Kalciumszulfát occurs naturally in several mineral forms, most notably as gypsum, which is a hydrated form (CaSO₄·2H₂O), and anhydrite, which is the anhydrous form (CaSO₄). These minerals are found in large deposits around the world.

The uses of kalciumszulfát are diverse and significant. Gypsum is a primary component in the production of plaster of Paris and wallboard, widely used in construction for its fire-resistant properties and ease of application. It is also used as a soil amendment to improve soil structure and water retention, particularly in clay soils. In agriculture, it serves as a source of both calcium and sulfur, essential nutrients for plant growth.

Anhydrous kalciumszulfát, or anhydrite, is also utilized as a desiccant, meaning it absorbs moisture from the air, and is therefore used in packaging to protect sensitive goods. It finds applications in cement production, acting as a retarder to control the setting time of concrete. In the food industry, kalciumszulfát is used as a firming agent, a stabilizer, and a nutrient supplement, often designated by the E number E516. It is also employed in some pharmaceutical preparations. The compound is generally considered safe for its intended uses, with established regulatory guidelines for its application.