Aluminium sulfate octadecahydrate
Aluminium sulfate octadecahydrate, identified by CAS number 7784-31-8, is a highly versatile inorganic compound widely utilized as a chemical raw material across numerous industrial sectors. Characterized by its white crystalline appearance and significant solubility in water, this octadecahydrate form is the most common commercial hydrate of aluminium sulfate. Chemically, it functions as a source of soluble aluminium ions, which are critical in processes requiring neutralization of surface charges or the formation of gelatinous precipitates. In handling contexts, the material is recognized for its acidic nature when dissolved, necessitating the use of corrosion-resistant storage and appropriate personal protective equipment to ensure safety. Its industrial value stems from its efficacy as a coagulating agent and its role in modifying the physical properties of various substrates. As a stable and cost-effective reagent, it remains a fundamental component in large-scale chemical processing, research applications, and manufacturing environments where pH control and particle aggregation are paramount.
• Water Treatment and Purification: One of the primary applications of aluminium sulfate octadecahydrate is its use as a coagulant in water treatment facilities. When added to water, it reacts to form aluminium hydroxide flocs that entrap suspended impurities, bacteria, and organic matter, allowing them to be easily removed through sedimentation or filtration.
• Paper and Pulp Manufacturing: In the paper industry, this compound serves as a critical sizing agent. It is employed to facilitate the binding of fibers and to improve the paper’s resistance to water and ink penetration. By adjusting the surface chemistry of the pulp, it ensures the production of high-quality, durable paper products.
• Textile Dyeing and Printing: The material acts as a mordant in the textile industry, particularly for dyeing cotton and other natural fibers. It helps fix dyes to the fabric by forming insoluble complexes with the coloring agents, resulting in enhanced color fastness and vibrancy in the finished textile products.
• Construction and Chemical Synthesis: Beyond its traditional roles, it is utilized in the construction industry as an accelerator for concrete setting and as a waterproofing agent. Additionally, it serves as a precursor in the synthesis of other aluminium-based chemicals and catalysts used in specialized industrial reactions.
Product Name: Aluminium sulfate octadecahydrate
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