Description

1-Ethenyl-3,5-Dimethyl-Benzene, also known as 3,5-Dimethylstyrene, is a versatile aromatic monomer characterized by its reactive vinyl group and substituted benzene ring. This compound is valued for its role as a building block in polymerization and organic synthesis, offering a pathway to introduce specific steric and electronic properties into advanced materials. It is primarily sought by industries involved in specialty polymer production, fine chemical manufacturing, and advanced material research.

Application

• Specialty Polymer Synthesis: Serves as a key monomer for producing modified polystyrene and other copolymers with enhanced thermal stability and tailored physical properties.
• Fine Chemical Intermediate: Used in the synthesis of pharmaceuticals, agrochemicals, and liquid crystal compounds where the dimethyl-substituted aromatic structure is required.
• Adhesive & Coating Formulations: Incorporated into resins and adhesives to improve cross-linking density, durability, and chemical resistance.
• Organic Synthesis & Research: Acts as a precursor in Diels-Alder reactions and other organic transformations for academic and industrial R&D.
• Flavor & Fragrance Industry: Employed in the controlled synthesis of specific aromatic ingredients.

Basic Information

Product Name	1-Ethenyl-3,5-Dimethyl-Benzene
CAS No.	5379-20-4
Molecular Formula	C10H12
Molecular Weight	132.20 g/mol
Synonyms	3,5-Dimethylstyrene; m-Xylylene, vinyl-; Vinyl-m-xylene; 3,5-Dimethylvinylbenzene; 1-Vinyl-3,5-dimethylbenzene; 3,5-Dimethylphenyl ethylene; (3,5-Dimethylphenyl)ethene
EINECS	226-359-1

Quality Control

Our 1-Ethenyl-3,5-Dimethyl-Benzene is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including Gas Chromatography (GC) for purity and identity confirmation, to ensure it meets precise customer specifications. Certificates of Analysis (COA) detailing all relevant parameters are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and oxidizing agents. Recommended storage temperature is between 2°C and 25°C. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20D)	1.535 - 1.545
Density (20°C)	0.910 - 0.930 g/mL

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