Get a comprehensive understanding of isopropanol aluminum and read this article!

Aluminum isopropoxide, also known as "triisopropoxy aluminum". Chemical formula Al [OCH (CH3) 2] 3. Molecular weight 204.23. White solid. Soluble in ethanol, isopropanol, benzene, toluene, carbon tetrachloride, and petroleum ether. Today, please join Yangzhou Zhongtianli to learn about isopropanol aluminum.

physical property

Aluminum isopropoxide, also known as aluminum isopropoxide. White solid powder. It has hygroscopicity. Relative molecular weight 204.24. Relative density 1.035. Melting point 118 ℃. Boiling point 135 ℃ (1.333 × 103Pa), 131 ℃ (0.999 × 103Pa), 125.5 ℃ (0.733 × 103Pa), 113 ℃ (0.333 × 103Pa), 106 ℃ (0.199 × 103Pa), 94 ℃ (0.0667 × 103Pa). Decomposes when exposed to water. Soluble in ethanol, isopropanol, benzene, toluene, chloroform, carbon tetrachloride, and petroleum hydrocarbons.

purpose

Aluminum isopropoxide is mainly used as a raw material for dehydrating agents, coatings, and waterproofing agents; Pharmaceutical raw materials; Catalyst, used for the Melwein Poundorf reaction to reduce carbonyl compounds, aliphatic ketones, and aliphatic aldehydes to alcohols; Alcoholysis and ester exchange catalysts in organic reactions; Preparation of aluminum soap; Synthesis of highly alkaline oxides, chelates, and acrylates.

Preparation method

The newly prepared isopropanol aluminum is obtained by reacting anhydrous isopropanol with aluminum sheets in the presence of mercuric chloride or aluminum trichloride catalysts and evaporating excess isopropanol. The newly prepared isopropanol aluminum exists in the form of trimer or tetramer. As a selective reducing agent, it can reduce the carbonyl groups of aliphatic or aromatic groups to hydroxyl groups, without affecting the presence of groups such as olefin bonds, alkyne bonds, nitro groups, acetals, carbon halide bonds, and nitrile groups within the molecule (see "Miven Pontoff Villan reduction method"). Store tightly in a dry place.

Aluminum powder and isopropanol can be prepared by heating reaction under the action of catalyst aluminum trichloride (or mercury chloride).

By adding an excess of isopropanol to a benzene solution of aluminum trichloride and reacting at 6 ℃, the product can be obtained.

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