| Customization: | Available |
|---|---|
| CAS No.: | 1066-33-7 |
| Formula: | Nh4hco3 |
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Ammonium bicarbonate is a white compound, chemical formula NH4HCO3, granular, plate or columnar crystals, ammonia odor. Ammonium bicarbonate is a carbonate, so it must not be placed with acid, because acid will react with ammonium bicarbonate to form carbon dioxide, making ammonium bicarbonate metamorphic. However, rural areas also use the nature of ammonium bicarbonate to react with acid, put ammonium bicarbonate in vegetable greenhouses, seal the greenhouses, and put ammonium bicarbonate at a high place, and add diluted hydrochloric acid. The ammonium bicarbonate reacts with hydrochloric acid to form ammonium chloride, water, and carbon dioxide. Carbon dioxide promotes photosynthesis in plants and increases vegetable yields, while the resulting ammonium chloride can also be reused as a fertilizer. Ammonium bicarbonate has ammonium ion in the chemical formula, which is a ammonium salt, and ammonium salt can not be put together with alkali, so ammonium bicarbonate should not be put together with sodium hydroxide or calcium hydroxide.
Stable at room temperature and pressure, avoid contact with strong acid oxides, thermal instability, solid at 58 ° C, aqueous solution at 70 ° C decomposition. The solubility in water is 14%(10ºC), 17.4%(20ºC), 21.3%(30ºC). Its aqueous solution is alkaline, and the pH value of 0.1mol·L-1 solution at 25ºC is 7.8. The chemical properties of ammonium bicarbonate are unstable and easily decomposed by heat. When heated to about 60 ° C, it decomposes into a white smoke composed of NH3 21.5%, CO2 55.7%, and H2O 22.8%. It can be decomposed by hot water. When there is moisture at normal pressure, it begins to decompose slowly above 36 ° C, generating ammonia, carbon dioxide and water.
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Quality Index Item |
Index |
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Total alkali content [by (NH) 4HCO]% |
99.2-101.0 |
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Chloride content (by Cl) ≤% |
0.003 |
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Sulphide content (by S)≤% |
0.007 |
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Ignition residue content ≤% |
0.008 |
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Arsenic content ≤% |
0.0002 |
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Heavy metal content(by Pb)≤% |
0.0005 |
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