Aluminum ammonium sulfate, also known as ammonium alum, is a chemical compound with the molecular formula AlNH4(SO4)2·12H2O. It is a white crystalline solid that appears as colorless crystals or powder. Aluminum ammonium sulfate has no distinct odor. Its basic structure consists of aluminum ions (Al3+) and ammonium ions (NH4+) bonded to sulfate ions (SO42-). This compound is highly soluble in water, with a solubility of approximately 70 g/100 mL at 20°C.
Safety information regarding aluminum ammonium sulfate indicates that it may cause irritation to the skin, eyes, and respiratory system upon contact or inhalation. Ingestion of this compound may cause gastrointestinal discomfort. It is important to handle aluminum ammonium sulfate with care and avoid direct contact with the skin or eyes. In case of accidental ingestion or exposure, immediate medical attention should be sought.
Applicable Fields
Water Treatment: Aluminum ammonium sulfate is commonly used as a coagulant in water treatment processes. Its purpose in this field is to remove impurities and suspended particles from water by causing them to clump together and settle. The mechanism of action involves the formation of aluminum hydroxide flocs, which trap and remove contaminants from the water.
Paper Industry: This compound is also utilized in the paper industry as a sizing agent. It helps to improve the strength and water resistance of paper by forming a protective coating on the paper fibers. The mechanism of action in this context involves the formation of a thin film on the paper surface, which reduces the penetration of water and enhances the paper's properties.
Storage
Conditions: Store in a cool and dry place.
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