- Description:
Product name: UREA
CAS No.: 57-13-6
Molecular Formula: CO(NH2)2
EINECS No.: 200315-5
- Characteristics:
It is a colourless, crystalline substance that melts at 132.7°C (271°F) and decomposes before boiling. Its density is 1.32 g/cm3 and It is highly soluble in water and contains 46.7% nitrogen. Urea is mainly used as fertilizer,and also used as industrial materials in synthetic industry and other fields, such as medicine, dye, textile, detonator, oil refining and printing.
- Technical Data:
| Item | Index |
| Appearance | White prilled or crystal |
| Nitrogen(%) ≥ | 46 |
| Biuret(%) ≤ | 0.9 |
| Moisture(%) ≤ | 0.5 |
| Size (Φ0.85-2.80mm) (%) ≥ | 93 |
- Application:
1. Agriculture uses
More than 90% of world industrial production of urea is destined for use as a nitrogen-release fertilizer. Urea has the highest nitrogen content of all solid nitrogenous fertilizers in common use. Therefore, it has the lowest transportation costs per unit of nitrogen nutrient.
In the soil, it hydrolyses back to ammonia and carbon dioxide. The ammonia is oxidized by bacteria in the soil to nitrate, which can be absorbed by the plants. Urea is also used in many multi-component solid fertilizer formulations. Urea is highly soluble in water, therefore, very suitable for use in fertilizer solutions (in combination with ammonium nitrate: UAN)
2.Chemical industry
Urea is a raw material for the manufacture of two main classes of materials: urea-formaldehyde resins and urea-melamine-formaldehyde used in marine plywood. They all have very varied uses including adhesives, laminates, moulding compounds, coatings and textile finishes.
Urea has the ability to trap many organic compounds in the form of clathrates. The organic compounds are held in channels formed by interpenetrating helices comprising of hydrogen-bonded urea molecules. This behavior can be used to separate mixtures, and has been used in the production of aviation fuel and lubricating oils, and in the separation of paraffin.
3.Automobile systems(Adblue)
Urea is used in SNCR and SCR reactions to reduce the NOx pollutants in exhaust gases from combustion, for example, from power plants and diesel engines. The BlueTec system, for example, injects water-based urea solution into the exhaust system. The ammonia produced by decomposition of the urea reacts with the nitrogen oxide emissions and is converted into nitrogen and water within the catalytic converter.