Description

2-(Endo-5-Norbornene is a specialized, high-purity bicyclic olefin monomer used in advanced polymer synthesis and organic chemistry. This compound matters for its unique strained-ring structure, which enables high reactivity in ring-opening metathesis polymerization (ROMP) and other catalytic transformations, leading to materials with tailored properties. It is needed by R&D chemists and process engineers in the pharmaceutical, advanced materials, and specialty chemical industries for developing novel polymers, resins, and complex organic molecules.

Application

• Ring-Opening Metathesis Polymerization (ROMP): A key monomer for synthesizing polynorbornene and other specialty polymers with controlled architectures.
• Pharmaceutical Intermediates: Serves as a versatile building block in the synthesis of complex, biologically active molecules and drug candidates.
• Advanced Material Synthesis: Used in the production of high-performance resins, coatings, and engineering plastics with enhanced thermal and chemical resistance.
• Cross-linking Agent: Imparts rigidity and stability to polymer networks in elastomers and thermosetting resins.
• Organic Synthesis & Catalysis: Acts as a substrate or ligand precursor in organometallic chemistry and catalytic reaction development.
• Adhesive & Sealant Formulations: Contributes to the performance of specialty adhesives requiring specific reactivity and durability.

Basic Information

Product Name	2-(Endo-5-Norbornene
CAS No.	125700-68-7
Molecular Formula	C7H10
Molecular Weight	94.15 g/mol
Synonyms	2,5-Norbornadiene; Bicyclo[2.2.1]hepta-2,5-diene; 2,5-Dihydro-1H-cyclopenta[1,3]cyclopropene; Norbornadiene; 2,5-Norbornadiene (endo-); Endo-2,5-Norbornadiene; 2,5-Dihydro-1H-cyclopenta[1,3]cyclopropene (endo-); Bicyclo[2.2.1]hepta-2,5-diene (endo-)
EINECS	Contact for details

Quality Control

Our 2-(Endo-5-Norbornene is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including GC, HPLC, and NMR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 2°C and 8°C (refrigerated) to maintain stability and prevent premature polymerization or degradation. Keep away from heat, sparks, and open flames. For long-term storage, consider storage under an inert atmosphere such as nitrogen or argon.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Purity (GC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 0.5%
Specific Gravity (20°C)	0.85 - 0.90
Refractive Index (n20D)	1.470 - 1.480

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