Description

Nco 650 is a specialized isocyanate compound, identified by CAS No. 81907-78-0, widely recognized for its role as a key building block in polymer synthesis. Its primary value lies in its consistent reactivity and purity, which are critical for ensuring the performance and reliability of the final manufactured products. This chemical is essential for industrial manufacturers and R&D facilities engaged in producing high-performance polyurethanes, coatings, adhesives, and elastomers.

Application

• As a core component in the formulation of polyurethane foams (flexible and rigid).
• In the synthesis of high-durability industrial coatings and paints.
• As a cross-linking agent in specialty adhesives and sealants.
• For the production of synthetic leather and elastomers.
• In the manufacture of automotive interior components and vibration dampeners.
• As a reactive intermediate in pharmaceutical and agrochemical research and development.
• For creating insulation materials in the construction and appliance industries.

Basic Information

Product Name	Nco 650
CAS No.	81907-78-0
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Hexamethylene Diisocyanate Trimer; HDI Trimer; Polyisocyanate based on HDI; Isocyanurate of HDI; Tolonate HDT; Desmodur N 3300; Bayhydur 3100; 1,6-Diisocyanatohexane Homopolymer
EINECS	Contact for details

Quality Control

Our Nco 650 is manufactured under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, isocyanate content, viscosity, and color determination. A Certificate of Analysis (COA) documenting all test results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a recommended temperature of 15-25°C. This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed under a dry atmosphere (e.g., under nitrogen) to prevent degradation from moisture ingress.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (NCO Content)	≥ 21.5 %
Viscosity (25°C)	2500 ± 500 mPa·s
Color (Gardner)	≤ 1
Hydrolyzable Chloride	≤ 0.01 %
Monomer (HDI) Content	≤ 0.2 %
Specific Gravity (25°C)	1.16 ± 0.02

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