- Country of manufactureChina
Ammonium food — baking powder. It is intended for production of flour confectionery: cookies, cakes, cakes, cakes, etc. Is food supplement of E503. When heating during baking there is sharp specific aroma which disappears then, at the same time carbon dioxide which loosens dough is emitted.
Ammonium carbonates are ammonium salts of carbonic acid. In sistemenh3 — CO2 — H2O are formed the following compounds of ammonium: bicarbonate (hydrocarbonate) NH4HCO3, carbonate (NH4)2CO3, semi-carbonate (NH4)2CO3.2NH4HCO3. H2O and carbamate of NH4CO2NH2; practical value was gained by the first two connections.
Bicarbonate (hydrocarbonate) of ammonium represents colourless crystals with a density of 1, 586 g/cm3. Solubility in water such is (in grams on 100 grams of water): 11, 9 (0 °C), 21, 7 (20 °C), 36, 6 (40 °C). Already at the room temperature of NH4HCO3 begins to allocate CO2, and about 60 ° break up totally; pressure of vapors depending on temperature (millimeters of mercury stolob): 59 (25, 4 °), 278 (45 °), 815 (59, 3 °). Receive Nh4hco3absorbtsiyey gazoobraznykhnh3i So2rastvorom (NH4)2CO3.
Ammonium carbonate — colourless crystals; it is very unstable — both on air, and in solution already at the room temperature allocates NH3, turning into bicarbonate (hydrocarbonate).
Ammonium carbonates receive interaction of the gaseous NH3, CO2 and vapors of water taken in stekhiometrichesky ratios at quick chilling and condensation of product of reaction. The carbonate and bicarbonate (hydrocarbonate) find application when dyeing fabrics, in medicine, in baking business.