| Customization: | Available |
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| CAS No.: | 57-13-6 |
| Formula: | CH4n2o |
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Urea, also known as urea or carbon amide, is an organic compound with a chemical formula of CH4N2O or CO(NH2)2. It is a white crystal and a major nitrogen-containing end product of protein metabolism in mammals and some fish.
As a neutral fertilizer, urea is suitable for a variety of soils and plants. It is easy to store, convenient to use, and minimally damages the soil. With the highest nitrogen content, it is a widely used chemical nitrogen fertilizer synthesized from ammonia and carbon dioxide under specific conditions.
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| Name | Urea |
| CAS NO. | 57-13-6 |
| Chemical formula | CO (NH2)2 |
| Appearance | White prilled crystal |
| Molecular weight | 60.055 |
| Density | 1.32 g/m3 |
| Property | It is soluble in water and alcohol. Its water solubility is faintly alkaline. It decomposes when heated over fusing point. Under high temperature, it can undergo a condensation reaction and form biuret, triuret and polyhydrocyanic acid. |
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Avoid use as seed fertilizer: Urea may produce biuret during production, which can harm seeds and seedlings if the biuret content exceeds 2%.
Avoid mixing with alkaline fertilizers: Chemical reactions occur when urea is mixed with alkaline fertilizers, leading to a loss of fertilizer efficiency.
Avoid excessive use: Urea has a high nitrogen content, with recommended dosages of 5-15 kg per mu in dry fields and 15-20 kg in paddy fields.
Avoid shallow application: Apply urea next to seedlings or in a trench at a depth of 10-15 cm for improved efficiency.
Avoid watering immediately after application: Wait 2-3 days in summer and autumn, and 7-8 days in winter and spring before watering to prevent loss of urea.
Avoid surface application: Apply urea deep in the soil to maximize effectiveness, as surface application leads to evaporation and low utilization rates.
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