Description

Bis(Isocyanatomethyl)Cyclohexane CAS NO 42170-25-2 is a specialized aliphatic diisocyanate monomer, a key building block in the synthesis of high-performance polymers. Its cycloaliphatic structure provides enhanced stability and performance characteristics compared to aromatic counterparts, making it critical for applications demanding superior weatherability and color retention. This product is essential for formulators and manufacturers in the coatings, adhesives, and specialty elastomers industries seeking to develop advanced polyurethane systems.

Application

• High-Performance Polyurethane Coatings: Used as a crosslinker in automotive clear coats, industrial finishes, and coil coatings where exceptional gloss, chemical resistance, and resistance to yellowing from UV exposure are required.
• Light-Stable Adhesives & Sealants: Serves as a core component in the production of adhesives and sealants for construction, aerospace, and automotive assembly that must maintain flexibility and bond strength under prolonged sunlight.
• Specialty Elastomers and Castables: A vital raw material for manufacturing elastomeric parts, rollers, and cast polyurethane items that require a combination of toughness, hydrolytic stability, and weatherability.
• UV-Curable Resin Systems: Incorporated into formulations for inks, overprint varnishes, and 3D printing resins that cure rapidly under UV light, benefiting from its fast reactivity and final material properties.
• Polymer Modification and Chain Extension: Employed to modify the properties of existing polymers or as a chain extender to increase the molecular weight and improve the mechanical performance of polyurethanes and polyureas.

Basic Information

Product Name	Bis(Isocyanatomethyl)Cyclohexane
CAS No.	42170-25-2
Molecular Formula	C10H14N2O2
Molecular Weight	194.23 g/mol
Synonyms	1,1'-Methylenebis(4-isocyanatocyclohexane); Dicyclohexylmethane-4,4'-diisocyanate (H12MDI); 4,4'-Methylenebis(cyclohexyl isocyanate); Hydrogenated MDI; HMDI; Bis(4-isocyanatocyclohexyl)methane; Desmodur W; 4,4'-Diosocyanatodicyclohexylmethane
EINECS	255-714-9

Quality Control

Our Bis(Isocyanatomethyl)Cyclohexane is manufactured under stringent process controls to ensure batch-to-batch consistency and high purity. Quality is verified through a comprehensive suite of analytical methods including titration, gas chromatography (GC), and infrared spectroscopy (IR). We provide full traceability and Certificates of Analysis (COA) with each shipment, confirming compliance with agreed specifications. Our quality management system supports customer audits and specific regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Due to its hygroscopic and moisture-sensitive nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent reaction with atmospheric moisture. Keep away from heat, sparks, open flames, and incompatible materials such as alcohols, amines, and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (NCO Content)	≥ 99.0 %
Purity (by GC)	≥ 99.5 %
Hydrolyzable Chloride	≤ 10 ppm
Total Chloride	≤ 20 ppm
Color (APHA)	≤ 30
Viscosity at 25°C	Contact for details

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