Polymethylene Polyphenyl Polyisocyanate (PAPI) | CAS 9016-87-9 | Polyurethane Raw Material | China Manufacturer
Product Name: Polymethylene Polyphenyl Polyisocyanate (PAPI)
Synonym: Polymeric MDI, PAPI, MDI Polymer
CAS Number: 9016-87-9
NCO Content: 30.0 – 32.0 %
Viscosity (25°C): 150 – 250 mPa·s (Brookfield)
Functionality: 2.6 – 3.0 (average)
Appearance: Yellow to brown clear liquid/oil
Packaging: 250kg drum / 1000kg IBC tote (custom packaging available)
Lead Time: 3-7 business days from stock
Applications: Rigid PU foam (insulation, spray foam), flexible PU foam (furniture, automotive), coatings, adhesives, elastomers
Free Sample: Available upon request for R&D evaluation
Worldwide Delivery: DHL / FedEx / air / sea
Made in China | COA & SDS provided with every shipment
- Worldwide Delivery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
PAPI (Polymeric MDI, CAS 9016-87-9) | PMDI Supplier | China-Based Manufacturer
📄 Product Overview : Polymethylene Polyphenyl Polyisocyanate (PAPI, CAS 9016-87-9)
Polymethylene Polyphenyl Polyisocyanate(CAS 9016-87-9) , also known as Polymeric MDI (PMDI), is a high-performance raw material for polyurethane production. It is a mixture of diphenylmethane diisocyanate (MDI) isomers and higher-functional oligomers, with an average functionality between 2.6 and 3.0.
Alfa Chemical supplies PAPI (CAS 9016-87-9) from our facility in Zhengzhou, China. NCO content is controlled at 30.0–32.0%, viscosity at 150–250 mPa·s, and acidity at ≤0.05%. Every batch ships with a COA and SDS.We provide customized packaging (from 250kg drums to IBC totes) and fast worldwide delivery.
📋 Technical Specifications: PAPI (PMDI)
⚠️ Reactivity: Reacts with water, alcohols, and strong oxidizing agents. Moisture-proof storage is required.
🏗️ Industrial Applications of Polymeric MDI (PAPI)
PAPI is the cornerstone of the polyurethane industry. Our high-functionality grade ensures excellent crosslinking and mechanical properties for:
Rigid PU Foam
Thermal insulation for construction (panels, spray foam), refrigeration, and pipe coatings.
Flexible PU Foam
Comfort materials for furniture, automotive seats, mattresses, and packaging.
Coatings & Adhesives
Industrial anticorrosive coatings, flooring, structural adhesives, and sealants.
Elastomers & Binders
High-performance elastomers, foundry binders, and composite materials.
🔬 Quality Control & Supply Capacity
🏭 Production Capacity
Annual output of 50,000+ metric tons. Advanced DCS control system ensures low acidity and consistent isomer ratio across all batches.
📋 Batch Traceability
Every shipment includes a Certificate of Analysis (COA) showing NCO%, viscosity, acidity, and hydrolysis chlorine. SDS and TDS are available upon request.
❓ Frequently Asked Questions: PAPI (Polymeric MDI, CAS 9016-87-9)
Our MOQ for standard PAPI is one 250kg drum. For trial samples, we offer 1kg and 5kg samples for quality validation before bulk orders.
Our PAPI is formulated to be fully interchangeable with major brands (e.g., Wanhua PM-200, BASF M20S, Huntsman 5005) in most rigid and flexible foam formulations. We can provide comparative data upon request.
Store in a cool, dry, well-ventilated area under inert gas (N₂). Keep temperature between 15°C and 35°C. Avoid moisture ingress to prevent CO₂ formation and viscosity increase. Shelf life is 12 months in original unopened containers.
Yes. Our experienced polyurethane chemists offer free technical consultation to help you optimize your formulation, whether for rigid boards, flexible foam, or coatings.
30.0 – 32.0%, verified by titration. COA reports the actual batch value.
250kg drum / 1000kg IBC tote. Custom packaging on request.
3–7 business days from stock. Bulk orders negotiable.
Yes, 1kg and 5kg samples available. Buyer covers shipping.
📦 Packaging & Shipping
Packaging
250kg drum / 1000kg IBC tote
Custom packaging available
Lead Time
3-7 business days from stock
Bulk orders negotiable
Shipping
DHL / FedEx (samples)
Air / Sea freight (bulk)
📄 Documentation: COA and SDS provided with every shipment.
🏭 Why Choose Alfa Chemical as Your PAPI PMDI Supplier
50,000+ Tons Capacity
Stable supply for large-scale industrial demand
Batch-to-Batch Consistency
Strictly controlled NCO, viscosity, and acidity
China Manufacturer Direct
Competitive pricing with full COA/SDS traceability
We respond within 12 hours. Ask about free samples and dedicated logistics support.
📩 Contact Our Sales TeamRelated products & resources:
Alfa Chemical Co., Ltd is based in Zhengzhou, China. All product specifications are for reference only. Users should conduct their own suitability tests under actual conditions. Products are for industrial manufacturing use only. Not for pharmaceutical, food, or cosmetic applications without specific regulatory compliance testing. Last updated: 2026-09-20.
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