Chemical Formula: AlCl Molar Mass: 133.34 g/mol Appearance: Aluminum chloride typically exists as a white to pale yellow crystalline solid. Odor: It has a sharp, irritating odor. Density: The density of solid aluminum chloride is approximately 2.48 g/cmï. Melting Point: Aluminum chloride melts at around 192.4C (378.3F). Boiling Point: It typically boils at around 180C (356F) under atmospheric pressure, though it can decompose before reaching its boiling point. Solubility: Aluminum chloride is highly soluble in water, ethanol, and other polar solvents. Stability: It is hygroscopic and tends to form hydrated forms in moist air. Anhydrous aluminum chloride is highly reactive and must be handled with care to avoid contact with water or moisture. Chemical Properties: Aluminum chloride is a Lewis acid, meaning it can accept electron pairs from Lewis bases. It is extensively used as a catalyst in various organic reactions, such as Friedel-Crafts acylation and alkylation. It also finds applications in polymerization reactions and as a coagulant in water treatment processes. Purity: Commercial grades of aluminum chloride can vary in purity, typically ranging from 95% to 99.9% purity. High-purity grades are often required for specific applications, especially in the pharmaceutical and electronics industries. Handling and Storage: Due to its reactivity with moisture, aluminum chloride should be stored in tightly sealed containers in a dry environment. It should be handled with appropriate precautions, including wearing protective gloves and eyewear, and avoiding inhalation of dust or vapors.
These specifications may vary depending on the grade and intended use of the aluminum chloride. It's important to refer to the specific product documentation and safety data sheets provided by the manufacturer for precise information.
Aluminium Chloride
Aluminum chloride (AlCl) is a chemical compound that belongs to the class of aluminum salts. It is a white or yellowish solid that readily absorbs moisture from the air and forms a white powder, often with a strong odor due to hydrolysis. Here are some key points about aluminum chloride:
Chemical Formula: AlCl
Physical Properties:
Solid at room temperature.
Forms white crystals.
Has a low melting point.
Hygroscopic Nature: Aluminum chloride is highly hygroscopic, meaning it readily absorbs water from the atmosphere. This property makes handling anhydrous aluminum chloride challenging.
Solubility: It is soluble in many organic solvents, but its solubility in water is limited. In water, it undergoes hydrolysis to form various species such as Al(HO)ïïï.
Uses:
Catalyst: Aluminum chloride is widely used as a catalyst in organic synthesis, particularly in Friedel-Crafts reactions.
Water Treatment: It is used in water treatment processes for removing impurities.
Antiperspirants: Some aluminum chloride compounds are used in antiperspirant products.
Electrolyte: Anhydrous aluminum chloride is used as an electrolyte in the production of aluminum metal.
Friedel-Crafts Reactions: One of its most important applications is in the Friedel-Crafts alkylation and acylation reactions in organic chemistry, where it serves as a Lewis acid catalyst.
Safety Considerations: Anhydrous aluminum chloride can be corrosive and poses inhalation hazards. It should be handled with care, and appropriate safety precautions should be taken.
Hydrated Forms: Aluminum chloride exists in various hydrated forms, such as the hexahydrate (AlClï6HO) and the basic chloride Al(OH)Cl.
It's important to note that while anhydrous aluminum chloride is commonly used in chemical synthesis, its hygroscopic nature requires careful handling to avoid unwanted reactions with water. The hydrated forms are more stable and less reactive in this regard.
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