Abstract
This article delves into the comprehensive study of Calcium Sulfate Dihydrate, CAS 10101-41-4, exploring its scientific background, properties, applications, and significance in various industries. It aims to provide a detailed overview of everything one might want to know about this compound, from its chemical structure to its practical uses.
Introduction to Calcium Sulfate Dihydrate
Calcium Sulfate Dihydrate, commonly known as石膏，is a chemical compound with the formula CaSO4·2H2O. It is widely used in various industries due to its unique properties. This article will explore the science behind this compound, covering its structure, properties, synthesis, applications, and environmental impact.
Chemical Structure and Properties
The chemical structure of Calcium Sulfate Dihydrate consists of calcium ions (Ca2+) and sulfate ions (SO42-) coordinated with two water molecules (H2O). This structure gives it a crystalline lattice that is stable and has a high melting point. The compound is odorless, white, and crystalline in appearance. It is also highly hygroscopic, meaning it can absorb moisture from the air, which is a crucial property in its applications.
The physical properties of Calcium Sulfate Dihydrate include a density of about 2.32 g/cm³ and a melting point of 136°C. It is also soluble in water, which is another important characteristic for its use in construction and agriculture.
Synthesis of Calcium Sulfate Dihydrate
Calcium Sulfate Dihydrate can be synthesized through various methods, including the reaction of calcium hydroxide with sulfuric acid, the reaction of calcium chloride with sodium sulfate, and the natural precipitation from water bodies. The most common industrial method involves the reaction of calcium oxide with sulfuric acid, which produces石膏 as a byproduct.
The process is typically carried out in large reactors where the reactants are mixed under controlled conditions. The resulting solution is then concentrated and crystallized to obtain the pure Calcium Sulfate Dihydrate.
Applications of Calcium Sulfate Dihydrate
Calcium Sulfate Dihydrate has a wide range of applications across different industries. One of its most significant uses is in the construction industry, where it is used as a setting material in plaster and cement. It also serves as a soil conditioner in agriculture, improving soil structure and water retention.
Additionally, Calcium Sulfate Dihydrate is used in the pharmaceutical industry as an excipient in tablet formulations. It is also employed in the food industry as a food additive, particularly as an anti-caking agent in powdered products.
Environmental Impact and Safety Concerns
While Calcium Sulfate Dihydrate has numerous applications, it also raises environmental and safety concerns. The compound can be harmful if inhaled or ingested in large quantities. It is also known to contribute to air and water pollution if not disposed of properly.
In terms of environmental impact, the mining and processing of石膏 can lead to soil erosion and water contamination. Therefore, it is crucial to implement proper waste management practices and to use the compound responsibly.
Conclusion
In conclusion, Calcium Sulfate Dihydrate, CAS 10101-41-4, is a versatile compound with a wide range of applications. Its unique chemical structure and properties make it an essential material in various industries. However, it is important to be aware of the environmental and safety concerns associated with its use. By understanding the science behind this compound, we can ensure its responsible and sustainable use in the future.
Keywords: Calcium Sulfate Dihydrate, CAS 10101-41-4, chemical structure, properties, synthesis, applications, environmental impact, safety concerns
