Description

trans-1,3-Dimethyl-2-Methylenecyclohexane is a specialized, high-purity cyclic olefin monomer of significant interest in advanced polymer synthesis and fine chemical manufacturing. Its unique structural configuration, featuring a strained exocyclic methylene group, makes it a valuable building block for creating polymers with tailored thermal and mechanical properties. This compound is primarily sought by R&D chemists and process engineers in the pharmaceutical intermediates, specialty adhesives, and advanced material science sectors for developing novel copolymers and functionalized materials.

Application

• Monomer for Specialty Polymer Synthesis: Used in the production of cyclic olefin copolymers (COCs) with high clarity, heat resistance, and low moisture absorption for optical and medical device applications.
• Pharmaceutical Intermediate: Serves as a key synthon in the multi-step synthesis of complex organic molecules and active pharmaceutical ingredients (APIs).
• Crosslinking Agent: Employed in the formulation of high-performance thermosetting resins and elastomers to enhance network density and chemical resistance.
• Organic Synthesis Reagent: Utilized in Diels-Alder reactions and other cycloaddition chemistry to construct complex carbocyclic frameworks in R&D laboratories.
• Fine Chemical Production: Acts as a precursor in the manufacture of fragrances, flavors, and other high-value specialty chemicals.
• Material Science Research: Investigated for developing novel polymeric materials with specific dielectric properties or gas separation capabilities.

Basic Information

Product Name	trans-1,3-Dimethyl-2-Methylenecyclohexane
CAS No.	20348-74-7
Molecular Formula	C9H16
Molecular Weight	124.22 g/mol
Synonyms	2-Methylene-1,3-dimethylcyclohexane (trans-); trans-2-Methylene-1,3-dimethylcyclohexane; 1,3-Dimethyl-2-methylenecyclohexane; NSC 163047; Cyclohexane, 1,3-dimethyl-2-methylene-, trans-; (1R,3S)-1,3-Dimethyl-2-methylidenecyclohexane
EINECS	Contact for details

Quality Control

Our trans-1,3-Dimethyl-2-Methylenecyclohexane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including Gas Chromatography (GC) and Nuclear Magnetic Resonance (NMR) spectroscopy, to verify identity and assay. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flames. For long-term storage, consider maintaining under an inert atmosphere (e.g., nitrogen or argon) to minimize potential oxidation.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 0.1%
Density (at 20°C)	0.80 - 0.82 g/mL
Refractive Index (n20D)	1.450 - 1.455

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