CAS: 7778-18-9
Calcium Sulfate Alpha Hemihydrate CB is an important alternative in the construction industry, and the fill and hardener property of this compound make it widely used in so many sectors. It comes from the calcination of gypsum, and different calcium sulfates have equally good thermal stability. This material is generic for their homogeneity and for its higher absorption of water; it went to the direction where relatively more applications exist for high pressure strength. Calcium Sulfate Alpha Hemihydrate CB has found its application in the manufacture of construction products such as cement and plaster-long-lasting and more resistant.
Calcium Sulfate Alpha Hemihydrate CB: Chemical Properties.
● CAS Number: 7778-18-9
● Molecular Formula: CaSO₄·½H₂O
● Brinell Hardness (MPa): 190
● Compacted bulk density (kg/m3): 1500
● Colorometer L* value: 92
● Colorometer b* value: 3.5
● Colorometer a* value: 0.3
Physical Properties of Calcium Sulfate Alpha Hemihydrate CB
● Appearance: Fine white or grayish powder
● Odor: Odorless
● Texture: Fine grain, non-clumping
● Moisture: Low free water content
Application in the Construction Industry
Calcium Sulfate Alpha Hemihydrate CB is widely utilized in the construction industry for its ability to improve the strength, durability, and setting time of gypsum and cement-based products. It is ideal for producing high-quality plasters, particularly for gypsum boards, molds, and coatings. Additionally, it is used as an additive in special cements, providing enhanced stability and resistance under extreme conditions. Its fast-setting properties make it useful in the production of precast concrete products.
Applications in Other Industries
● Agriculture: Used as a soil acidity corrector, improving soil structure and supporting plant growth.
● HI&I (Home, Industrial, and Institutional): Incorporated in cleaning products, acting as a mild abrasive for surface cleaning.
● Art & Sculpture: Used for molds and modeling, as it captures fine details well, making it ideal for detailed sculptures.
● Water Treatment: Helps remove phosphorus in wastewater, forming insoluble compounds that are easily removed.
● Personal Care: If the product has mild abrasive properties, it could be found in cosmetic products such as exfoliants or facial cleansers.
● Pulp and Paper: In the paper industry, calcium compounds are used in the manufacturing and bleaching process of pulp to adjust acidity.