Urea (CO(NH2)2), also known as carbamide, is the most widely used solid nitrogen fertilizer in the world. With a nitrogen content of 46%, it has the highest nitrogen concentration of any dry nitrogen fertilizer, making it the most cost-effective nitrogen source per unit of nutrient. Urea is a white, odorless, free-flowing solid available in both granular and prilled forms.
We supply three grades of urea to meet different market needs: agriculture-grade (46% N, biuret ≤ 1.0%) for direct soil application and NPK blending; industrial-grade (lower biuret, higher purity) for resins, adhesives, and chemical synthesis; and DEF/AdBlue-grade (biuret ≤ 0.5%, ISO 22241 compliant) for diesel exhaust fluid production. Granular urea (2-4 mm) is preferred for bulk fertilizer blending and direct application; prilled urea (0.85-2.8 mm) is preferred for solution preparation and foliar feeding.
| Molecular Formula | CO(NH2)2 / CH4N2O |
| Molecular Weight | 60.06 g/mol |
| Appearance | White free-flowing granules or prills |
| Odor | Odorless |
| Melting Point | 132-135°C |
| Boiling Point | Decomposes before boiling |
| Density | 1.32-1.35 g/cm3 (solid); 0.64-0.77 g/cm3 (bulk) |
| Solubility in Water | Highly soluble (1,200 g/L at 20°C) |
| pH (10% solution) | 7.0-9.0 |
| Specific Gravity | 1.335 (at 20°C) |
| Bulk Density (Granular) | 720-770 kg/m3 |
| Bulk Density (Prilled) | 640-700 kg/m3 |
| Product Name | Urea (Carbamide) |
| CAS Number | 57-13-6 |
| EINECS Number | 200-315-5 |
| HS Code | 31021000 |
| Total Nitrogen (N, dry basis) | ≥ 46.0% (typical: 46.2-46.5%) |
| Biuret | ≤ 1.0% (Agriculture) / ≤ 0.5% (DEF grade) |
| Moisture | ≤ 0.5% |
| Free Ammonia (NH3) | ≤ 160 ppm |
| Particle Size (Granular) | 2.0-4.0 mm (90% min) |
| Particle Size (Prilled) | 0.85-2.8 mm (90% min) |
| Urea Assay | ≥ 98.0% |
| Grade | Agriculture / Industrial / DEF (AdBlue, ISO 22241) |
| Form | Granular / Prilled |
| Hazard Class | Non-hazardous (general cargo) |
| Package Type | PP woven bag with inner PE liner / jumbo bag / bulk |
| Net Weight | 25 kg / 50 kg / 500 kg / 1000 kg jumbo bag |
| Bulk Loading | Up to 28-30 MT per 20ft container (bulk) |
| Bagged Loading | ~20-25 MT per 20ft container (50 kg bags) |
| Private Label | OEM bag printing available (min. order applies) |
| Shelf Life | 12 months from production date |
Urea is non-hazardous and easy to handle. However, it is hygroscopic and can absorb moisture from the air, leading to caking. Store in a dry, covered, well-ventilated area with moisture protection. Keep bags sealed when not in use. Avoid stacking more than 15 bags high to prevent compression caking. Keep away from strong oxidizers, acids, and alkalis. Do not store near food products. Shelf life is 12 months under proper storage conditions.
Agricultural note: When applied to soil, urea is converted by the enzyme urease to ammonium carbonate, which can volatilize as ammonia gas. To minimize nitrogen loss, incorporate urea into soil immediately after application or use urease inhibitor-treated urea.
Q: What is the difference between granular and prilled urea?
Granular urea (2-4 mm) has larger, harder particles with better crushing strength, making it ideal for bulk blending with other fertilizers and mechanical spreading. Prilled urea (0.85-2.8 mm) has smaller, more uniform particles that dissolve faster, preferred for solution preparation and foliar application.
Q: What is DEF/AdBlue grade urea?
DEF (Diesel Exhaust Fluid) / AdBlue requires pharmaceutical-grade urea with biuret ≤ 0.5% and extremely low impurity levels (aldehydes, heavy metals). It meets ISO 22241 specification for use in SCR systems to reduce NOx emissions in diesel vehicles.
Q: Do you provide SGS or CCIC inspection?
Yes, we can arrange SGS or CCIC pre-shipment inspection at the buyer's request. The cost is typically borne by the buyer. We also provide COA with every shipment.
