Crystallization of ammonium carbonate

Introduction: ammonium carbonate is easy to dissolve in butyl water, decomposes in hot water (70 ℃), and is insoluble in concentrated ammonia water and ethanol When the dew is placed in the air, it will gradually become ammonium bicarbonate, and when heated to 580 ℃, it will completely decompose into ammonia, carbon dioxide and water What about the crystallization of ammonium bicarbonate? Let's take a look at it with the editor Ammonium carbonate is a kind of white, small piece or flake or smashed solid product It has ammonia flavor, dissolves in water, is insoluble in alcohol, and has hygroscopicity When it is heated to 580 ℃, it will be decomposed into ammonia and carbon dioxide What are the crystallization of ammonium carbonate? Let's learn about it with the safety net of Baibai Generally, ammonium sulfate and calcium carbonate are used in industrial production Calcium carbonate powder is made into suspension, and ammonium sulfate is added to form gypsum and ammonium carbonate solution, and then crystallized The details are as follows: (1) pure product is obtained by cooling and crystallizing ammonia and carbon dioxide into water Industrial products are obtained by the interaction of ammonium sulfate or ammonium chloride with calcium carbonate (2) Under low temperature and certain pressure, when carbon dioxide and water react with excess ammonia, ammonium carbonate: 2nh3 + CO2 + H2O - → (NH4) 2CO3 (3) can be obtained by reacting the suspension of ammonium sulfate and calcium carbonate under heating: (NH4) 2SO4 + CaCO3 - → (NH4) 2CO3 + CaSO4 (4) urea will gradually react with water in the aqueous solution to produce ammonium carbonate: CO (NH2) 2 + 2H2O - → (NH4) 2CO3 The above is the content introduction of ammonium carbonate crystallization If you need to know more about industrial naphthalene and other small knowledge, please continue to pay attention to the food safety common sense column of Baibai safety net Editor in charge: Wang Xiaoli