Calcium Sulfate (CAS 10101-41-4) is a chemical compound with a unique set of physical and chemical properties that make it invaluable across a spectrum of industrial applications. From enhancing paper quality to treating water and forming components in coatings, understanding these properties is key for R&D scientists and product formulators seeking reliable raw materials. If you are looking to buy Calcium Sulfate, knowing its characteristics will guide your selection.

Physically, Calcium Sulfate typically presents as colorless columnar crystals or a white crystalline powder. Its hydrated form, gypsum, loses water upon heating; at 128°C, it partially dehydrates to form plaster of Paris (hemihydrate), and at temperatures above 163°C, it becomes fully anhydrous. The anhydrous form has a relative density of 2.32 and a high melting point (around 1450°C), indicating its thermal stability. It exhibits slight solubility in hot water and is insoluble in most organic solvents and alcohols, which influences its application in aqueous systems and formulations.

Chemically, the purity of Calcium Sulfate is often specified by industry standards, with a common benchmark being a minimum of 99.5% purity for industrial-grade products. This high purity is crucial for applications where contaminants could negatively affect the final product or process, such as in high-grade coatings or specialized papermaking processes. Manufacturers in China are key suppliers of such high-purity material, often available in standard packaging like 25kg bags.

The industrial uses of Calcium Sulfate are extensive. In water treatment, it can aid in the removal of certain dissolved substances or help manage water hardness. The papermaking industry utilizes it as a filler and coating pigment to improve brightness, opacity, and printability. In printing and dyeing processes, it acts as an auxiliary agent. Its application also extends to metallurgy and the formulation of coatings and adhesives, where it can impart specific physical properties such as rheology control or improved durability.

For businesses seeking to source this chemical, identifying a reliable Calcium Sulfate supplier is essential. Manufacturers specializing in fine chemicals often provide detailed technical data sheets (TDS) that outline the precise properties, quality standards, and handling instructions for their Calcium Sulfate products. Understanding these specifications ensures that the material procured aligns with the demanding requirements of each application.

In conclusion, the versatile properties of Calcium Sulfate, combined with its availability from manufacturers worldwide, particularly in China, make it a critical raw material for numerous industries. Whether for water treatment, paper production, or advanced material formulations, sourcing high-quality Calcium Sulfate is a strategic step for innovation and operational efficiency.