Description

5-Methylnonamethylene Diisocyanate is a specialized aliphatic diisocyanate monomer used as a key building block in high-performance polymer synthesis. This compound is valued for its ability to impart excellent light stability, chemical resistance, and mechanical properties to the resulting materials. It is primarily required by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing specialty polyurethanes and polyurea formulations.

Application

• Light-Stable Polyurethane Coatings: A critical raw material for automotive clear coats, industrial finishes, and exterior coatings where resistance to yellowing from UV exposure is paramount.
• High-Performance Adhesives & Sealants: Used in formulations requiring strong bonding, flexibility, and durability under harsh environmental conditions.
• Specialty Elastomers: Serves as a chain extender or crosslinker in the production of polyurethane and polyurea elastomers for wheels, rollers, and industrial parts.
• Waterborne Polyurethane Dispersions (PUDs): Enables the creation of environmentally friendly coating systems with low volatile organic compound (VOC) content.
• Weatherable Films & Laminates: Used in the synthesis of polymers for protective films, graphic overlays, and composite materials that require long-term outdoor stability.
• Chemical-Resistant Linings & Encapsulants: Provides the backbone for polymers used to protect surfaces in aggressive chemical environments.

Basic Information

Product Name	5-Methylnonamethylene Diisocyanate
CAS No.	68882-57-5
Molecular Formula	C11H18N2O2
Molecular Weight	210.27 g/mol
Synonyms	5-Methyl-1,9-nonamethylene Diisocyanate; 5-Methylnonane-1,9-diisocyanate; 1,9-Diisocyanato-5-methylnonane; HNMI; Methylnonamethylene Diisocyanate
EINECS	Contact for details

Quality Control

Our 5-Methylnonamethylene Diisocyanate is manufactured under strict process controls to ensure batch-to-batch consistency and high purity. Quality is verified through a comprehensive suite of analytical techniques including gas chromatography (GC), titration for isocyanate content, and moisture analysis. Certificates of Analysis (COA) documenting purity, assay, and key physical properties are provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or dry air) to prevent reaction with atmospheric moisture. Recommended storage temperature is 2-8°C for long-term stability; allow to equilibrate to room temperature before opening.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.5%
Isocyanate Content (NCO)	39.0 - 40.5 %
Hydrolyzable Chloride	≤ 10 ppm
Total Chloride	≤ 20 ppm
Water Content (Karl Fischer)	≤ 0.05 %
Viscosity @ 25°C	Contact for details
Specific Gravity @ 25°C	Contact for details

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