Agricultural Urea

Description

Physical and chemical core indicators 1. Total nitrogen (dry basis): ≥46.4% 2.Moisture: ≤0.3% 3. Biuret: ≤0.9% 4. Appearance: white uniform particles, no large amounts of dust, no agglomeration 5. Conventional particle size: 0.85–2.8mm, screening pass rate ≥90%; large particle size 2–4mm 6.Bulk density: 0.78~0.85 t/m³ 7. Water solubility: Easily soluble in water, the aqueous solution is weakly alkaline 8.5% aqueous solution pH: 8.0~9.5 9. Free ammonia: ≤0.01% 3. Impurity control index (unit: mg/kg) 1. Water-insoluble matter: ≤100 2.Arsenic (As): ≤5 3. Lead (Pb): ≤10 4. Cadmium (Cd): ≤1 5. Chromium (Cr): ≤50 6. Iron (Fe): ≤70