| Chemical Name | Raison Polymer Coated Urea (PCU) |
| Core Composition | Urea (CO(NH₂)₂) core with biodegradable polymer coating |
| CAS No. | 57-13-6 (Urea Core) |
| EINECS No. | 200-315-5 |
| HS Code | 3102.10.00 (Urea, whether or not in aqueous solution) |
| Appearance | Light brown to tan, free-flowing coated granules |
| Grade | Controlled-Release Agricultural/Horticultural Grade |
| Nutrient Composition | 42 – 0 – 0
∟ Total Nitrogen (N): ≥ 42.0% ∟ Release Mechanism: Polymer Membrane Diffusion ∟ Release Duration: 3–12 Months (Customizable) |
| Packaging | 25 kg / 50 kg moisture-proof PP bags, 1000 kg UV-stabilized jumbo bags, or bulk on request |
| Certificate / Standard | ISO 9001, EN 13432, OMRI Listed (Optional), SGS / CIQ Inspected |
Products
Polymer Coated Urea (PCU) 42-0-0
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- Product Specialist
- Phone：+86 18766652660
- WhatsApp:+8618766652660
- Email:Eva@raisonchemical.com
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Polymer Coated Urea (PCU) 42-0-0
Polymer Coated Urea (PCU) 42-0-0 Product Description
Raison Chemical —— Polymer Coated Urea (PCU 42-0-0) is a premium next-generation controlled-release nitrogen fertilizer engineered for precision nutrient delivery. Unlike sulfur-coated urea that relies on microbial degradation, PCU uses a uniform, eco-friendly polymer membrane to regulate nitrogen release via moisture diffusion and temperature-driven kinetics — delivering stable, predictable nutrition for 3–12 months regardless of soil microbial activity. With 42% plant-available nitrogen and near-zero uncoated particle content, it outperforms conventional CRFs in release consistency, reduces nitrogen loss by up to 70%, and eliminates the need for multiple side-dressings. It is the gold standard for high-value horticulture, turf management, perennial crops, and sustainable agriculture systems.
Technical Specifications Table
| Parameter | Specification | Test / Standard |
| Total Nitrogen (N) Content | ≥ 42.0% | ISO 15960 / AOAC 977.08 |
| Uncoated Urea Content | ≤ 10.0% | Wet Sieving Method |
| Controlled Release Duration | 3–12 Months (Adjustable by Coating Thickness) | Laboratory Incubation (25°C, 60% WHC) |
| Moisture Content | ≤ 0.5% | Oven Dry Method |
| Particle Size | 90% within 2.0–4.0 mm (Custom sizes available) | Sieve Analysis |
| Appearance | Light brown to tan, free-flowing coated granules; no visible foreign matter | Visual |
| Bulk Density | 0.92–1.02 kg/L | ISO 913 |
| pH (10% aq. suspension) | 6.0–7.5 (Near Neutral) | ISO 3423 |
| Polymer Biodegradability | ≥ 90% biodegradation within 24 months (soil burial) | EN 13432 / ASTM D5511 |
| Free Ammonia (NH₃) | ≤ 160 p.p.m. | Titration |
| Radiation | Non-radioactive | — |
Key Benefits of Raison PCU 42-0-0
- Stable, Predictable Release (Independent of Soil Biology): Unlike sulfur-coated urea that relies on microbial degradation of the sulfur layer, PCU uses a physical polymer membrane to control release via moisture diffusion. Performance is consistent across all soil types, including low-microbial, alkaline, and cold soils where SCU fails.
- Ultra-Low Nitrogen Loss: With ≤10% uncoated particles, PCU reduces nitrogen loss from volatilization, leaching, and denitrification by up to 70% compared to conventional urea. This cuts fertilizer waste and minimizes groundwater contamination.
- Extended Release Options (3–12 Months): Customizable coating thickness allows matching nutrient release to crop growing cycles — from short-season vegetables (3-month release) to perennial fruits/turf (12-month release). One application replaces 2–4 side-dressings, saving labor and fuel costs.
- Zero Seedling Burn Risk: The polymer membrane limits initial nitrogen release to near-zero levels, making PCU safe for seed-contact applications (pop-up fertilizers) and sensitive crops like blueberries, strawberries, and ornamentals.
- Eco-Friendly Biodegradable Coating: The polymer membrane meets EU EN 13432 and US ASTM D5511 biodegradability standards, breaking down into harmless CO₂ and water within 24 months of soil burial. No microplastic residues remain.
- Neutral pH for Soil Health: With a pH of 6.0–7.5, PCU does not acidify or alkalize soil over time, making it suitable for pH-sensitive crops and long-term cultivation systems.
- Export-Compliant Quality: Manufactured under ISO 9001 controls, every batch ships with full SGS/CIQ inspection, EN 13432 biodegradability reports, and OMRI certification (optional) for organic-compliant markets.
At-a-Glance Specs (For Quick Reference)
| Feature | Raison Standard |
| Total Nitrogen (N) | 42% Min |
| Uncoated Particle Rate | ≤ 10% |
| Release Duration | 3–12 Months (Customizable) |
| Moisture | ≤ 0.5% |
| Form | Granular (2–4 mm) |
| pH | 6.0–7.5 (Neutral) |
| Polymer Type | Eco-Friendly Biodegradable Resin |
| Origin | China (Shandong/Qingdao) |
| Documents | COA, MSDS, SGS, EN 13432 Compliance Report |
Application Methods
Broadcasting (Pre-Plant): Apply uniformly across the soil surface using calibrated spreaders. For conventional tillage, incorporate into the top 5–10 cm of soil to initiate moisture contact with the polymer membrane. In no-till systems, apply immediately before rainfall (>10mm) or irrigation. Ideal for field crops, turf, and orchard floor management.
Band Placement / Starter Application: Place 2–5 cm beside and below the seed row for row crops, or in planting holes for transplants. PCU’s ultra-low initial release makes it safe for close seed contact — no risk of ammonium toxicity or seedling burn.
Top-Dressing for Perennial Crops: For fruit trees, berries, grapes, and turf, apply once at the start of the growing season. The 6–12 month release profile provides steady nutrition without repeated applications. For golf courses, apply 1–2 times annually depending on grass type and climate.
Container / Potting Mixes: Blend PCU into potting media at 0.5–1.5 kg per m³ of mix for nursery stock, ornamental flowers, and greenhouse vegetables. The controlled release eliminates the need for weekly liquid feeding, reducing labor and runoff.
Fertigation (Limited Use): PCU granules are
NOT RECOMMENDED for drip or micro-sprinkler systems — granules will clog emitters and filters. For flood irrigation or pivot systems with drop tubes, broadcast granules onto the soil surface and wash into the profile with moving water.
Foliar Spray: STRICTLY PROHIBITED. PCU is formulated exclusively for soil application. The polymer coating and urea core will not dissolve in spray tanks, causing severe equipment clogging and irreversible leaf burn.
Precautions & Best Practices
Avoid Membrane Damage: Do not crush, grind, or aggressively handle PCU granules — damaged membranes cause uncontrolled “burst release” of nitrogen, leading to crop burn. Handle bags gently during transport and application.
Temperature Sensitivity: Release rates increase by ~10% for every 5°C rise in soil temperature above 15°C. Adjust application rates downward for hot-climate crops, or select longer-duration coatings to compensate.
Soil Moisture Requirement: Moisture must penetrate the polymer membrane to initiate release. In soils with <40% field capacity, release will be negligible. Ensure adequate pre-application irrigation or time application before forecast rainfall.
Storage: Store in a cool, dry, well-ventilated warehouse with relative humidity <70%. Stack bags on wooden pallets (max 10 layers high) to prevent ground moisture wicking. Keep bags sealed until use — prolonged exposure to high humidity can prematurely degrade the polymer coating.
Mixing Compatibility: Physically compatible with most granular fertilizers (MAP, DAP, potash, TSP). Do not mix with strong alkalis (lime, calcium nitrate) — high pH can degrade the polymer membrane. Avoid excessive mechanical blending that could damage granules.
Safety: Wear nitrile gloves and a dust mask during handling to avoid skin irritation and inhalation of fine particles. Wash exposed skin thoroughly after use. Store away from food, feed, and ignition sources.
| Performance Metric | PCU 42-0-0 | SCU 40-0-0+10S | Conventional Urea 46-0-0 |
|---|---|---|---|
| Nitrogen Content | 42% | 40% | 46% |
| Release Mechanism | Polymer Membrane (Diffusion-Controlled) | Sulfur Coating (Microbe-Degradation) | Instant Hydrolysis |
| Release Duration | 3–12 Months (Customizable) | 8–12 Weeks | 1–7 Days |
| Initial N Availability | Near-Zero (Safe for Seed Contact) | Low-Moderate | Very High (Burn Risk) |
| Loss Reduction vs Urea | Up to 70% | Up to 50% | None (Baseline) |
| Seed Safety | Very High (No Burn Risk) | High | Low (Requires Deep Placement) |
| Soil Temperature Dependency | Low (Works in Cold Soils) | Moderate (Slows in Cold) | None |
| Biodegradable Coating | Yes (EN 13432 Certified) | Partially (S oxidized to SO₄²⁻) | No |
| Application Flexibility | High (Broadcast, Band, Top-dress) | Moderate (Not for Fertigation) | High (Requires Multiple Apps) |
| Best Suited For | Horticulture, Turf, Perennials, Containers | Field Crops, No-Till, Pastures | High-N Demand Annual Crops |
Packing&Shipping
| Packaging Type | Weight Options |
|---|---|
| Woven PP Bags | 9.9 kg, 50 kg |
| Jumbo Bags | 1000 kg (1 MT) |
| Bulk Delivery | Available upon request |
1) What products does Raison Chemical mainly supply?
A: We focus on two core categories:
Agricultural fertilizers: Urea (46% N, prilled/granular), NPK compound fertilizers, Potassium Nitrate (technical/agri grade) and related potash/blended fertilizers.
Industrial & hazardous chemicals: organic peroxides/initiators (MEKP, BPO, etc.), corrosive chemicals (e.g. Caustic Soda flakes/liquid, acids), and associated inorganic salts/industrial materials.
We position ourselves as an integrated supplier covering sourcing, quality check, repacking/labeling, warehousing coordination and export documentation.
2) Are your chemicals “genuinely compliant” for export? What documents do you provide?
Q: How do you guarantee compliance and smooth customs clearance?
A: Compliance is non-negotiable in our segment. For each shipment we can prepare the standard export document set required by most importers:
COA / MSDS(SDS) per batch
Certificate of Origin
Commercial Invoice / Packing List
When needed: SGS/third-party inspection, quantity & quality reports, and additional certificates (depending on destination & product)
For hazardous goods (DG), we work within the required DG framework: proper UN marking, DG declarations, and DG-class aware logistics booking from Qingdao/Shanghai/Tianjin.
3) Potassium Nitrate is a controlled / hazardous product—can you legally supply and export it?
A: Yes—KNO₃ is part of our handled range, but we treat it as what it is: a 5.1 oxidizer and a controlled/regulated item in many jurisdictions. We only offer it when the inquiry matches a lawful end-use and the buyer can work with proper DG procedures (correct documentation, compliant packaging, and DG-capable carriers). If you are unsure about your local import permit/license path, tell us your country & HS code requirement and we’ll align the paperwork accordingly.
4) Do you support custom packaging / OEM private labeling?
A: Yes. Common options include 25 kg / 50 kg PP woven + PE inner, and FIBC/Jumbo bags (500/1000 kg). We can arrange OEM bag printing (your logo, multi-language labels, lot/batch info). For hazardous items, any “custom pack” must still respect DG/UN packaging rules—so we’ll confirm which artwork/labels are feasible before production.
5) What are your typical lead times and shipping ports?
A: After deposit & artwork confirmation (if any), typical windows are roughly:
In-stock / spot arrangements: 7–15 days to readiness
Made-to-order / special specs / OEM bags: 15–30 days (depends on spec, inspection, DG queue)
Main export gateways: Qingdao / Shanghai / Tianjin, chosen by cargo type, container equipment and routing cost.
6)What is your MOQ and payment terms?
A: For most lines we quote against 1×20ft FCL as the practical MOQ (to keep unit cost & logistics sane). Smaller LCL lots are possible case-by-case—especially for DG where carriers/permits drive feasibility.
Payment norm: T/T (30% deposit + 70% against copy docs / BL); other terms discussed per client profile & inspected track record.
7) Can I get samples before placing a full container order?
A: Yes. We can arrange small representative samples (often courier / local express) for your lab check. For hazardous items, sample channel must follow DG courier rules—sometimes that means higher cost or an alternative arrangement. Sample cost & freight are usually on buyer’s account; refundable against first container in many cases.
Leave Your Message
Still not sure which spec/pack fits your market? Contact Raison Chemical with your destination country, HS code and monthly volume—we’ll propose a compliant plan and lead time.
Why Choose Raison® Chemical
· Licensed DG Exports – Full permits, zero compliance risks.
· Integrated Supply – Agro & industrial chemicals, one source.
· Certified Quality – SGS/ISO assured with full COA/SDS.
· Qingdao Logistics – Faster shipping, lower freight costs.
· Flexible Packaging – OEM branding tailored to your market.
