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Specifications
| Appearance: | Colorless translucent crystal sheet shaped or crystalline powder |
| NH3: | 40% min |
| Clarity: | 5# |
| Water insoluble: | 0.001% max |
| Ignition residue: | 0.001% max |
| Chloride (Cl): | 0.0001% max |
| Sulphate (SO4): | 0.0005% max |
| Fe: | 0.0005% max |
| Heavy metals (Pb): | 0.0001% max |
Applications
1. Intermediate in Urea Production
Primary use in industry as an intermediate in the synthesis of urea from ammonia and carbon dioxide.
Urea is widely used as a nitrogen fertilizer and in resins, plastics, and pharmaceuticals.
2. Nitrogen Fertilizer (Limited Direct Use)
Though less common than urea, ammonium carbamate can also be used directly as a source of nitrogen for plants, particularly in controlled or specialty applications.
Its fast decomposition into ammonia and carbon dioxide releases plant-available nitrogen.
3. Chemical Synthesis
Used as a reagent or reactant in the production of other nitrogen-containing chemicals, including carbamates and isocyanates.
Can be employed in laboratory synthesis for generating urea derivatives and other carbamate compounds.
4. Catalysis and Process Chemistry
Acts as a starting material or additive in catalytic systems involving CO₂ fixation and amine chemistry.
Used in certain green chemistry processes due to its role in CO₂ capture and conversion.
5. Pharmaceutical and Fine Chemical Applications
Sometimes utilized in the synthesis of active pharmaceutical ingredients (APIs) or as a protective group carrier in intermediate compounds.
Benefits
1. Efficient Nitrogen Carrier
Provides both ammonia (NH₃) and CO₂, making it useful for applications requiring nitrogen-rich environments.
Its decomposition is simple and leaves no toxic residue, making it suitable for environmentally-conscious applications.
2. Versatile Intermediate
Readily reacts with other compounds, making it a valuable intermediate for synthesis in various chemical industries.
Allows for mild reaction conditions in urea or carbamate synthesis.
3. Low Toxicity
Considered relatively low in acute toxicity (with proper handling), and decomposes into naturally occurring gases.
4. CO₂ Capture Potential
Because it forms from ammonia and carbon dioxide, it's involved in carbon capture and storage (CCS) research and has potential in green chemistry pathways.
Conclusion
Ammonium Carbamate (CAS 1111-78-0) is a valuable industrial chemical primarily used as an intermediate in urea production and a source of nitrogen in specialized applications. Its dual nature as a nitrogen and carbon carrier, coupled with its relatively benign decomposition products, also makes it attractive in green chemistry, carbon capture, and fine chemical synthesis. While not commonly used directly as a fertilizer, it plays an essential role in global nitrogen-based chemical production.
