Calcium sulfate dihydrate CAS 10101-41-4

What is Calcium sulfate dihydrate CAS 10101-41-4

Calcium sulfate dihydrate is also called “natural anhydrous gypsum”. Chemical formula CaSO4. Molecular weight 136.14. Orthorhombic crystals. Relative density 2.960, refractive index 1.569, 1.575, 1.613. Another soluble anhydrous gypsum: melting point 1450℃, relative density 2.89, refractive index 1.505, 1.548, decomposes when white hot. Its hemihydrate is commonly known as “burned gypsum” and “platinum calciformis”, mostly in the form of white non-crystalline powder, with a relative density of 2.75. Its dihydrate is commonly known as “gypsum”, which is white crystal or powder, with a relative density of 2.32, refractive index 1.521, 1.523, 1.530, and loses all crystal water when heated to 163℃. Chemicalbook Slightly soluble in water, hydrochloric acid, nitric acid, soluble in hot sulfuric acid, insoluble in alcohol. Natural products are soluble in alkaline sulfate, sodium thiosulfate, and ammonium salt aqueous solutions. Preparation method: Natural anhydrous gypsum is obtained by reacting CaO and SO3 under red heat. Soluble anhydrous gypsum is obtained by heating CaSO4·2H2O to constant weight at 200℃. Hemihydrate is obtained by calcining and dehydrating raw gypsum. Dihydrate is obtained by reacting calcium chloride with ammonium sulfate. Main uses of calcium sulfate: Natural anhydrous gypsum is mostly used in medicine; soluble anhydrous gypsum can be used as interior decoration, and can also be used to make chemicals, beverages, etc.; hemihydrate is mostly used in building materials, and can also be used to make gypsum statues and ceramic materials; its dihydrate is used to make hemihydrate, fillers, etc.

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Industrial Uses

‌1. Scale inhibitor: Calcium sulfate dihydrate has good scale inhibition performance and can be used for water treatment in industrial systems to prevent scaling inside pipes and equipment and maintain the normal operation of the system.

‌2. Industrial raw materials: Calcium sulfate dihydrate can be used as a raw material for preparing other chemical substances, such as gypsum, gypsum board, gypsum powder, etc.

‌3. Building materials: In the construction industry, calcium sulfate dihydrate can be used as a gypsum product in building materials for the decoration and repair of walls, ceilings, etc.

‌4. Mining processing agent: In mining processing, calcium sulfate dihydrate can be used as an auxiliary agent in the flotation and purification process to promote the separation and purification of ores.

Agricultural Uses

‌1. Soil conditioner: Calcium sulfate dihydrate CAS 10101-41-4 can adjust the pH of the soil, improve soil structure, increase soil fertility, and promote plant growth.

‌2. Feed additive: As a calcium source, calcium sulfate dihydrate can supplement the calcium element in animals and promote animal growth and bone development.

‌3. Pesticide raw materials: In agriculture, calcium sulfate dihydrate CAS 10101-41-4 can be used as a raw material for pesticides, for the preparation of insecticides, fungicides, etc.

Medical uses

‌1. Pharmaceutical raw materials: Calcium sulfate dihydrate CAS 10101-41-4 can be used as a pharmaceutical raw material for the preparation of calcium supplements, antacids and other drugs to treat osteoporosis, hyperacidity and other diseases.

‌2. Medical materials: It is often used to make plaster bandages for fracture fixation. It has good plasticity and stability and helps the healing of fractures.

‌3. Dental materials: In the field of dentistry, calcium sulfate dihydrate can be used to make dental molds and filling materials.

‌4. Wound dressings: It has certain water absorption and air permeability and can be used for dressings of certain wounds.

Food uses

‌1. Food additives: Calcium sulfate dihydrate CAS 10101-41-4 can adjust the pH of food, increase the hardness and taste of food, and play a role as a coagulant in the production of foods such as tofu.

‌2. Preservatives: It is used for the preservative treatment of food, beverages, etc. to extend the shelf life of food.

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