KAIYUAN CHEMICAL COMPANY LIMITED
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Aluminum Chloride Hexahydrate

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KAIYUAN CHEMICAL COMPANY LIMITED
[China]

Address
B-2205, Kuangshi International Building, Yingbin Road , XiangLuo Bay Business District , Binhai New  Shanghai Shanghai
Phone
96829-8722096829-18722096829
Contact name
Kate

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  • Place of Origin: China
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Description

Aluminum chloride, also known as aluminum trichloride, has the chemical formula AlCl3 and is a compound of chlorine and aluminum. Aluminum chloride has a low melting point and a low boiling point, and it sublimes to an ionic covalent compound. Melted aluminum chloride is not easily conductive and is different from most halide-containing salts such as sodium chloride. AlCl3 adopts the "YCl3" structure, which is the most densely packed layered structure of Al cubic, while Al in AlBr3 accounts for the adjacent tetrahedral gap of Br's closest packed frame. When molten, AlCl3 forms a volatile dimer Al2Cl6 with two tri-center four-electron chlorine bridges. At higher temperatures, the Al2Cl6 dimer dissociates to form a planar triangular AlCl3, similar to the BF3 structure. Aluminum chloride is a colorless transparent crystal or a white and slightly yellowish crystalline powder. The vapor of aluminum chloride, either dissolved in a non-polar solvent or in a molten state, exists as a covalent dimeric molecule. Soluble in water and many organic solvents. The aqueous solution is acidic. In the presence of aromatic hydrocarbons, aluminum chloride mixed with aluminum can be used to synthesize di(arene) metal complexes. For example, diphenyl chromium is prepared by Fischer-Hafner synthesis through specific metal halides. Low concentrations of basic aluminum chloride are often one of the components of antiperspirants, while those with hyperhidrosis are higher in concentration (12% or higher). Basic Information Chinese name Aluminum chloride Foreign name Aluminum chloride Chemical formula AlCl3 CAS registration number 7446-70-0 Melting point 190 °C (463 K) (2.5 atmospheres) Molar mass 133.34g/mol Hazard symbol Eighth category Exterior Colorless transparent or light yellow crystalline powder   nickname Aluminum trichloride Risk description Harmful by inhalation. Molecular weight 133.34 Application chemical industry Density 2.48 Boiling point 178 °C (451 K) (sublimation) Water soluble Soluble Security description S1/2S7/8S28S45 table of Contents 1 physical properties 2 chemical properties 3 main uses 4 preparation method 5 notes Folding edit this paragraph physical properties Aluminum trichloride, white granules or powder, with strong hydrochloric acid odor, industrial products are pale yellow. Soluble in water, alcohol, chloroform, carbon tetrachloride, slightly soluble in benzene. Melted aluminum chloride is not easily conductive and is different from most halide-containing salts such as sodium chloride. The aqueous solution of aluminum chloride is completely dissociated and is a good electrical conductor. Anhydrous aluminum chloride sublimes at 178 ° C and its vapor is an associated bimolecular. It absorbs moisture in the air and partially hydrolyzes to release hydrogen chloride. AlCl3 adopts the "YCl3" structure, which is the most densely packed layered structure of Al cubic, while Al in AlBr3 accounts for the adjacent tetrahedral gap of Br's closest packed frame. When molten, AlCl3 forms a volatile dimer Al2Cl6 with two tri-center four-electron chlorine bridges. At higher temperatures, the Al2Cl6 dimer dissociates to form a planar triangular AlCl3, similar to the BF3 structure. The aluminum chloride is a colorless transparent crystal or a white and slightly yellowish crystalline powder. It is easy to absorb water and part of the water liberates hydrogen chloride to form an acid mist. Soluble in water and strongly hydrolyzed, the solution is acidic. Also soluble in ethanol and ether, while releasing a lot of heat. Aluminum chloride hexahydrate is a colorless orthorhombic crystal with a density of 2.398 g/cm and decomposes at 100 °C. CAS number 7446-70-0 Melting point 194 ° C Boiling point 180 ° C Relative density (water = 1) 2.44 Molecular weight 133.34 Folding edit this paragraph chemistry Aluminum chloride is a strong Lewis acid which reacts with a Lewis base to produce a compound, and even a weak Lewis base such as benzophenone and mesitylene. If chloride ions are present, aluminum chloride will form (iv) chloroaluminate ion AlCl4: In water, aluminum chloride is partially hydrolyzed to form hydrogen chloride gas or H3O ions. The aqueous solution is the same as other aluminum-containing materials, contains hydrated aluminum ions, and reacts with an appropriate amount of sodium hydroxide to form aluminum hydroxide precipitate: Al2O3+3C+3Cl2→2AlCl3+3CO heating conditions 2Al+3Cl2→2AlCl3 heating conditions Industrial aluminum chloride Industrial aluminum chloride AlCl3+4NaOH=NaAlO2+3NaCl+2H2O Aluminum chloride is prone to deliquescence and may explode if exposed to water due to hydration. It will partially hydrolyze to release hydrogen chloride or hydrochloric acid. The solution is acidic due to partial hydrolysis of the aluminum ions. [Al(H2O)6] + H2O ⇌ [Al(OH)(H2O)5] + H3O Folding and editing the main purpose of this paragraph 1. Aluminum chloride is mainly used in the Friedel-Craft reaction. For example, bismuth and phosgene are used as raw materials to prepare hydrazine, which is used in the dyeing and finishing industry. In the generalized Friedel-Crafts reaction, the reaction formula of an acid chloride or an alkyl halide and an aromatic substance is as follows: 2. Benzene and its derivatives When the above reaction occurs, the main product is the para isomer. In comparison, the alkylation reaction involves more problems than the acylation reaction. Regardless of the reaction, aluminum chloride and other materials and equipment must be moderately dry, with a small amount of water contributing to the reaction. Since aluminum chloride can be coordinated to the reaction product, it must be used in the Friedel-Crafts reaction in the same amount as the reactants rather than the "catalytic amount". The aluminum chloride after the reaction is difficult to recover and generates a large amount of corrosive waste. In order to meet the requirements of green chemistry, chemists began to use aluminum trifluoride or antimony trifluoride instead of aluminum chloride to reduce pollution. Aluminum chloride is also commonly used to add an aldehyde group to a benzene ring. For example, the Gartman-Koch reaction uses carbon monoxide, hydrogen chloride, aluminum chloride, and cuprous chloride as a catalyst. 3. Aluminum chloride has a wide range of applications in organic chemistry. It catalyzes the Ene reaction, such as the addition of 3-buten-2-one (methyl vinyl ketone) to carvone: 4. AlCl3 is also commonly used in hydrocarbon polymerization and isomerization reactions, and important examples include industrial production of ethylbenzene. Ethylbenzene can be used to further prepare styrene, polystyrene, and dodecylbenzene as a cleaning agent. In the presence of aromatic hydrocarbons, aluminum chloride mixed with aluminum can be used to synthesize di(arene) metal complexes. For example, diphenyl chromium is prepared by Fischer-Hafner synthesis through specific metal halides. Low concentrations of basic aluminum chloride are often one of the components of antiperspirants, while those with hyperhidrosis are higher in concentration (12% or higher). 5. Used as a catalyst for organic synthesis, such as petroleum cracking, synthetic dyes, synthetic rubber, synthetic detergents, medicines, spices, etc.; 6. A catalyst for producing a pesticide, an organoaluminum compound, a phthalocyanine organic pigment, or a catalyst for producing ethylbenzene; 7. Used for metal smelting and lubricating oil synthesis; 8. Food grade products are used as antifoaming agents such as leavening agents and sake, and flocculants for pectin; 9. Used as analytical reagents, preservatives, mordants. Folding and editing this paragraph preparation method Laboratory method The laboratory was prepared with aluminum and hydrochloric acid at room temperature (2A l + 6HCl == 2AlCl3 + 3H2 ↑). The preparation can be accelerated under heating. If anhydrous aluminum trichloride is prepared from crystalline aluminum chloride, it is heated under a hydrogen chloride atmosphere to lose crystal water or treated with a dehydrating agent such as thionyl chloride because it is easily hydrolyzed. Industrial law Industrially, it is obtained by carbonization at room temperature (Al2O3 + 3C + 3Cl2 = △ = 2AlCl3 + 3CO [1]). It can also be prepared by reacting alumina with carbon tetrachloride under normal temperature conditions (Al2O3 + 3CCl4 == 2AlCl3 + 3COCl2). Anhydrous aluminum chloride is used as a catalyst in the petroleum industry and in some other organic synthesis reactions. Chemical reaction formula: 2Al + 3Cl2 → 2AlCl3 2. Aluminoxy powder method: industrial alumina and petroleum coke of a certain particle size are put into the roasting furnace in a certain proportion and uniformly mixed, and the air is blown from the bottom of the furnace for roasting. The calcined material enters a chlorination furnace, and chlorine and oxygen are introduced into the furnace, and the aluminum oxide powder reacts with chlorine in the presence of a reducing agent carbon. The produced gas phase product is pre-cooled and purified to remove the trap to obtain a finished aluminum chloride product. Exhaust gas is absorbed by sodium hydroxide or sodium sulfite solution and then emptied; 3. Melting method: It is obtained by heating and melting aluminum metal and then introducing anhydrous hydrogen chloride. Folding editing notes in this paragraph Anhydrous aluminum chloride reacts violently with alkali and must be disposed of properly. Aluminum chloride Aluminum chloride Aluminum chloride containing water of crystallization has no such problem. If you inhale anhydrous aluminum chloride or contact your eyes and skin, it can cause irritation. Routes of entry: inhalation, ingestion, percutaneous absorption. Health hazard Inhalation of high concentrations of aluminum chloride can stimulate bronchitis in the upper respiratory tract, and has a stimulating effect on the skin and mucous membranes. Individuals can cause bronchial asthma. When the amount of misuse is large, it can cause oral erosion, gastritis, stomach bleeding and mucosal necrosis. Aluminum chloride Aluminum chloride Chronic effects: Long-term exposure can cause headaches, dizziness, loss of appetite, cough, nasal congestion, chest pain and other symptoms. Acute toxicity: LD503730mg/kg (rat oral); Hazardous characteristics: toxic and corrosive gas released by reaction with water; combustion (decomposition) products: chloride, alumina. Security term When S26 is inadvertently in contact with eyes, rinse immediately with plenty of water and seek medical advice. S45 In case of accident or discomfort, seek medical attention immediately (if possible, show the label). Wear appropriate protective clothing, gloves and goggles or mask on S36/37/39. Safety measures Eye protection: Wear chemical safety glasses. Protective clothing: wear overalls (made of anti-corrosion materials). Hand protection: Wear rubber gloves. Skin contact: Immediately remove contaminated clothing and rinse thoroughly with plenty of running water. Ingestion: When the patient is awake, gargle immediately, giving milk or egg white. Seek medical attention immediately. Protective measures Respiratory protection: Wear dust masks when exposed to dust. Wear a gas mask if necessary. Fire fighting methods: dry powder, sand. Do not use water. Other: After work, shower and change clothes. Store clothes contaminated with poisons separately and wash them before use. Maintain good hygiene practices. Leakage emergency treatment Isolation of the contaminated area, with warning signs around it, it is recommended that emergency personnel wear self-contained breathing apparatus and chemical protective clothing. Do not touch the spill directly. Do not allow the spill to come into contact with combustible materials (wood, paper, oil, etc.). Collect it in a closed container with a clean shovel and mark it for disposal. If there is a large amount of leakage, it is best not to use water, and remove it under the guidance of the technician. first-aid Skin contact: Immediately remove contaminated clothing and rinse thoroughly with plenty of running water. Eye contact: Immediately lift eyelids, rinse with running water for 10 minutes or rinse with 2% sodium bicarbonate solution. Inhalation: Remove quickly from the scene to fresh air. Keep warm and keep the airway open. Perform artificial respiration if necessary. Seek medical attention. Ingestion: When the patient is awake, rinse immediately and give milk or egg white. Seek medical attention immediately. Fire fighting methods: dry powder, sand. Do not use water.


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