Benzylamine is a colorless liquid that is miscible with water, ethanol and diethyl ether. It is alkaline, can absorb carbon dioxide, is prepared by reacting benzyl chloride with ammonia, or obtained by reductive amination of benzaldehyde. A precipitant for the determination of molybdate, vanadate, tungstate, titanium, cobalt, ruthenium, osmium, iridium and osmium for use in microcrystallization analysis. Used as an intermediate in dyes, pharmaceuticals and polymers.
The preparation method comprises the steps of: adding ethanol, urotropine and benzyl chloride to the reaction kettle, heating to 30-35 ° C, reacting for 4 h, adding hydrochloric acid, heating to 45-50 ° C, reacting for 2 h, cooling, filtering, and heating the filtrate to remove ethanol. Change to vacuum distillation, steam to dry, add alkali solution, free benzylamine, atmospheric distillation and vacuum distillation to obtain the product.
The benzyl chloride can also be added to the reaction pot by ammonium hydrazide, ammonium hydroxide and hydrogencarbonate, and reacted at 30-35 ° C for 6 h, and the oil layer is allowed to stand still. The reaction liquid is heated to catch ammonia gas, distilled under reduced pressure at 100 ° C, and then added to free. Alkali, the alkali solution is separated, and the oil layer is distilled to obtain a product.
0.981 g/mL at 25 ℃(lit.)
UN 2735 8/PG 2
Cool,dry and hermetic place
In the pharmaceutical industry, benzylamine is a key compound in the active components of synthetic drugs.
In the pesticide industry, benzylamine is used for the synthesis of cell active penetrant.
In addition, benzylamine can be used in surfactant industry, coating industry, dyestuff industry, etc.
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