Description

Nco 650 CAS NO 83373-31-3 is a high-purity isocyanate compound, specifically a polyisocyanate, designed for demanding industrial applications. This product is a critical building block in the synthesis of high-performance polyurethane polymers, offering excellent reactivity and consistency. It is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking reliable raw materials for durable end-products.

Application

• Polyurethane Coatings: A key component in the formulation of high-performance industrial, automotive, and protective coatings, providing excellent durability, chemical resistance, and gloss.
• Adhesives & Sealants: Used to produce strong, flexible polyurethane adhesives and sealants for construction, automotive assembly, and composite bonding.
• Elastomers: Serves as a crosslinker in the production of polyurethane elastomers for wheels, rollers, gaskets, and other impact-resistant parts.
• Binder Systems: Employed in foundry sand binders and composite materials, enhancing strength and dimensional stability.
• Flexible & Rigid Foams: Can be utilized as a modifier or crosslinker in specialized polyurethane foam systems to tailor density and physical properties.

Basic Information

Product Name	Nco 650
CAS No.	83373-31-3
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyisocyanate 650; Isocyanate prepolymer 650; NCO-terminated prepolymer; Aliphatic polyisocyanate; Hexamethylene diisocyanate (HDI) based polyisocyanate; HDI trimer derivative; Polyurethane crosslinker 650; Blocked polyisocyanate (potential form)
EINECS	Contact for details

Quality Control

Our Nco 650 is manufactured under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, reactivity, and performance aligned with industry specifications. Certificates of Analysis (COA) detailing key parameters such as NCO content, viscosity, and color are available upon request.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, and well-ventilated area at a recommended temperature of 15-25°C (59-77°F). Due to its hygroscopic nature, containers must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Color (Gardner)	≤ 2
Specific Gravity (25°C)	Contact for details
Water Content	≤ 0.05%
Monomer Content (HDI)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.