How does the NCO content percentage identify the specific reactivity profile of this Isocyanate?

The NCO content directly quantifies the available reactive isocyanate groups within the polymer chain. A standard mass fraction between 30.5% and 32.0% definitively identifies a polymeric identity optimized for high-density cross-linking, resulting in the high compressive strength required for industrial rigid matrices.

Is this specific chemical hardener typically applied in flexible foam formulations or rigid insulation systems?

This specific industrial grade is primarily intended for rigid polyurethane foam formulations and heavy-duty structural adhesives. The higher functionality of the polymeric structure induces dense polymer networks, differentiating it from pure MDI or TDI variations commonly used for flexible, high-resilience applications.

Isocyanate CAS 9016-87-9

Isocyanate (CAS 9016-87-9) is a highly reactive aromatic synthetic macromolecule containing multiple NCO functional groups, serving as a foundational reactant within the broader category of Chemical Intermediates. Operating as a critical cross-linking agent, this versatile polymeric MDI interacts with polyols in rapid exothermic reactions to produce rigid polyurethane matrices, making the polymethylene polyphenyl isocyanate essential for developing advanced thermal insulation foams and industrial composite panels. Its precise NCO content provides optimal curing kinetics, structural rigidity, and exceptional adhesion properties when deployed as a primary polyurethane hardener in continuous structural manufacturing environments. To support uninterrupted industrial processing schedules, our facility maintains extensive bulk supply capabilities, ensuring consistent lot-to-lot reactivity with customized specifications to meet precise viscosity and NCO percentage requirements, all supported by competitive factory pricing and comprehensive technical documentation including MSDS, TDS, COA.

CAS: 9016-87-9
Synonyms: Polymeric MDI, PMDI, Polymethylene polyphenyl isocyanate, Polyurethane hardener
Einecs: 618-498-9
Grade: Industrial Grade
Package: 250kg/iron drum, 1250kg/IBC tank

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Product Description

Technical Data

Physicochemical Properties	Standard Specification (Standard PMDI Grade)
Appearance	Dark brown transparent liquid
NCO Content	30.5% – 32.0%
Viscosity (at 25°C)	150 – 250 mPa·s
Acidity (as HCl)	≤ 0.05%
Hydrolyzable Chlorine	≤ 0.2%
Density (at 25°C)	1.22 – 1.25 g/cm³
Flash Point (Open Cup)	> 200°C
Solubility	Reacts with water; soluble in aromatic and chlorinated hydrocarbons

Applications:

Rigid Polyurethane Foam: Functions as the primary reactive “B-side” component combined with polyether polyols to extrude rigid thermal insulation boards for commercial construction and cold-chain refrigeration units.
Industrial Adhesives & Binders: Utilized as a heavy-duty moisture-curing binding agent in the production of oriented strand board (OSB), medium-density fiberboard (MDF), and recycled rubber crumb flooring.
Elastomers & Coatings: Applied in the formulation of high-performance anti-corrosion polyurea systems and waterproof polyurethane coatings intended for harsh industrial environments.

Storage & Safety:

Storage Conditions: Isocyanates are highly sensitive to moisture. Material must be stored in tightly sealed, dry containers under a nitrogen blanket within a temperature-controlled warehouse (15°C to 35°C). Exposure to water generates insoluble polyureas and carbon dioxide gas, which can dangerously pressurize sealed containers.
Safety & Handling: This chemical is a known respiratory sensitizer and irritant. Industrial handling requires rigorous local exhaust ventilation. Operators must be equipped with supplied-air respirators (in poorly ventilated areas), chemical-resistant nitrile gloves, and splash-proof goggles to prevent dermal contact and vapor inhalation.

Quality Assurance:

Our chemical production lines operate under rigorous ISO 9001 quality management frameworks. Every batch undergoes advanced analytical verification, utilizing automated potentiometric titration to precisely quantify the NCO mass fraction. We strictly monitor viscosity variations and acidity levels to ensure the reaction kinetics and cross-linking density of the polymer matrix perfectly align with international polyurethane manufacturing standards.

FAQ - Technical & Supply Chain

Q:
How does the NCO content percentage identify the specific reactivity profile of this Isocyanate?

A: The NCO content directly quantifies the available reactive isocyanate groups within the polymer chain. A standard mass fraction between 30.5% and 32.0% definitively identifies a polymeric identity optimized for high-density cross-linking, resulting in the high compressive strength required for industrial rigid matrices.
Q:
Is this specific chemical hardener typically applied in flexible foam formulations or rigid insulation systems?

A: This specific industrial grade is primarily intended for rigid polyurethane foam formulations and heavy-duty structural adhesives. The higher functionality of the polymeric structure induces dense polymer networks, differentiating it from pure MDI or TDI variations commonly used for flexible, high-resilience applications.

Documents

Documents and Product Support

For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.

COA for batch-based quality reference
TDS for key physical and chemical information
SDS / MSDS for handling, storage, and safety reference
Packing information for sample, trial, and bulk orders
Technical communication based on application and specification requirements

Quotation

Information to Confirm Before Quotation

Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.

Product name and CAS number
Application or intended end use
Required purity, grade, or specification
Sample quantity, trial order, or bulk demand
Preferred packing form or net weight
Destination country or port
Required documents or compliance expectations

Storage & Handling

Packaging, Storage, and Handling Notes

Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.

Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.

Supply Support

Sample, Bulk Order and Repeat Supply Support

Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.

For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.

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Product Categories

Tags:

Crosslinking Agent Isocyanate Intermediate Polyurethane Intermediate Reactive Intermediate

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