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Urea N46 Prilled or Granular Fertilizer Grade CAS 57-13-61
FertilizerUreaUrea N46
Longkey Chemistry Limited
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Product Description UREA FERTILIZER (46-0-0)1. Product IdentificationProduct Name: Urea Fertilizer (Prilled or Granular)Common Name: UreaChemical Formula: CO(NH2)2CAS No.: 57-13-6Grade: Agricultural Fertilizer Grade (46% N)2. Key Specifications (Typical Fertilizer Grade)ParameterSpecificationNotesTotal Nitrogen (N)Min. 46.0% (Typically 46.2% - 46.7%)Highest N content of solid fertilizers. Expressed as 46-0-0.Biuret ContentMax. 1.0% (Often < 0.8%; Premium < 0.3%)Critical for seedbeds, foliar sprays, & sensitive crops. Lower is better.MoistureMax. 0.5% - 1.0%Affects flowability and caking.Size DistributionPrills: 1-3.5mm; Granules: 2-4.5mmGranules are harder, less dusty, dissolve slower.Hardness (Granules)Min. 25 N (Newton)Resistance to crushing. Granules > Prills.Critical Relative Humidity (CRH)73% at 30°CHumidity level above which absorbs moisture rapidly.Bulk Density~720 - 780 kg/m3 (45-49 lb/ft3)Important for storage/transport calculations.pH (10% Solution)~7.0 - 7.5Neutral.3. Physical PropertiesAppearance: White, free-flowing spherical prills or granules.Odor: Odorless or slight ammonia smell.Solubility: Highly soluble (108 g/100ml water @ 20°C). Ideal for fertigation/dissolving tanks.Hygroscopicity: Highly hygroscopic - absorbs moisture from air above CRH. Causes caking.4. Agricultural PropertiesPrimary Nutrient: 46% Nitrogen (N) in Amide form (NH2).Soil Conversion: Hydrolyzed by soil urease enzyme → Ammonium (NH4+) → Nitrate (NO3-) (plant-available).Conversion Rate: Depends on temp, moisture, pH, & urease activity (hours to days).Volatilization Risk: Significant ammonia (NH3) loss if surface-applied without rain/incorporation (>20% loss possible). Inhibitors available.Salt Index: Moderate (1.7). Lower than ammonium nitrate or MAP/DAP.5. Handling & StorageStorage: Cool, Dry, Well-Ventilated. Protect from moisture, rain, humidity >73%.Packaging: Moisture-proof bags (PP woven w/ liner), bulk bags (FIBC), bulk piles.Caking Prevention: Store on pallets, limit stack height, use first-in-first-out (FIFO), consider anti-caking agents.Dust Control: Minimize drops & handling. Use dust masks during heavy loading/unloading.Compatibility: Generally compatible with most dry fertilizers except Ammonium Nitrate (forms wet sludge). Store separately.6. ApplicationMethods: Broadcast, banded (avoid seed contact), top-dress, fertigation (fully soluble), foliar (low-biuret only!).Timing: Pre-plant, side-dress. Incorporate ASAP (within 48h) to reduce volatilization.Rates: Crop-specific. Consult local agronomic recommendations.Sensitive Crops (Biuret): Citrus, pineapple, coffee, seedlings - use low-biuret urea (<0.25%).7. Safety (Fertilizer Handling Focus)GHS Hazard Statements (Typical):H315: Causes skin irritationH319: Causes serious eye irritationH335: May cause respiratory irritation (dust)PPE: Gloves, safety glasses, dust mask/respirator when dusty. Cover skin.Skin Contact: Wash with soap/water. Can cause mild irritation/dryness.Eye Contact: Rinse immediately with water for 15 mins. Seek medical attention if irritation persists.Inhalation: Move to fresh air. Seek medical attention if coughing/respiratory distress.Ingestion: Rinse mouth. Drink water. Low acute toxicity, but seek medical advice if large amounts consumed.Fire: Non-flammable. Decomposition fumes (ammonia, nitrogen oxides) toxic if exposed to extreme heat.8. Environmental & RegulatoryEnvironmental Impact: High risk of eutrophication via runoff. Follow 4R Nutrient Stewardship (Right Source, Rate, Time, Place).Transport: Generally NOT classified as dangerous goods (UN/ADR/RID/IMDG/IATA exempt). Check local SDS.Regulatory Status: Approved fertilizer worldwide. Comply with local nutrient management regulations.9. Typical ApplicationsMajor Crops: Wheat, corn, rice, sugarcane, cotton, vegetables, grasslands.Usage: Base nitrogen source, blended with P & K fertilizers, component in Urea Ammonium Nitrate (UAN) solutions.10. Advantages & DisadvantagesAdvantagesDisadvantagesHighest N content (46%)High ammonia volatilization loss riskCost-effective N sourceRequires incorporation/immediate rainfallHighly soluble (fertigation-friendly)Highly hygroscopic (storage issues, caking)Neutral pHBiuret concerns for sensitive crops/foliar useCompatible with most soilsModerate salt index Critical Reminders for Users:Volatilization Management: Incorporate immediately (tillage, irrigation >10mm) or use urease inhibitors (NBPT, NPPT) to reduce NH3 losses significantly.Storage is Key: Moisture = Caking. Keep DRY.Biuret Matters: Check biuret level for sensitive uses (foliar, seedlings).
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