First, the chemical formula of ammonium bicarbonate
The chemical formula of ammonium bicarbonate is NH4HCO3. Ammonium bicarbonate is a white compound with granular, plate or columnar crystals, non-toxic and smells of ammonia. Soluble in water, the aqueous solution is alkaline, insoluble in ethanol. Ammonium bicarbonate is a carbonate, so it cannot be placed with acid, because the acid will react with ammonium bicarbonate to produce carbon dioxide, which will deteriorate the ammonium bicarbonate. There is ammonium ion in the chemical formula of ammonium bicarbonate, which is an ammonium salt, and ammonium salt cannot be placed with alkali, so ammonium bicarbonate should not be placed with sodium hydroxide or calcium hydroxide.
2. Chemical properties of ammonium bicarbonate
The aqueous solution of ammonium bicarbonate is alkaline and unstable, and decomposes into carbon dioxide and ammonia above 36℃ And water, 60 ℃ can be decomposed. It is hygroscopic and decomposes faster after deliquescence.
The chemical equation of the reaction is:
NH4HCO3+HCl=====NH4Cl+H2O+CO2↑
NH4HCO3==Δ==NH3 ↑+H2O+CO2↑
H2SO4+NH4HCO3==H2O+CO2↑+NH4HSO4 (in excess of dilute sulfuric acid)
H2SO4+2NH4HCO3==2H2O+2CO2↑+(NH4) 2SO4 (in excess of ammonium bicarbonate)
2NH4HCO3+2NaOH (a small amount)=(NH4)2CO3+Na2CO3+2H2O
NH4HCO3+2NaOH (a large amount)=Na2CO3+H2O+NH3: H2O
NH4HCO3+2NaOH==Δ==NH3↑+Na2CO3+2H2O
Three, storage method of ammonium bicarbonate
1. Keep the container sealed, store in a cool, dry place, and store in a cool, dry and ventilated warehouse. Never put it together with NaOH or Ca(OH)2.
2. Pay attention to moisture-proof, rain-proof and sun-proof during storage and transportation. When handling, handle with care to prevent damage to the package.
3. It is strictly forbidden to mix and transport with oxidants, acids, edible chemicals, etc. During transportation, it should be protected from exposure to sunlight, rain, and high temperature.
4. In case of fire, spray water, spray or use dry powder, carbon dioxide, foam extinguishing agent to put out the fire.
