Description

M,α-Dimethylstyrene CAS NO 1124-20-5 is a versatile, high-purity aromatic hydrocarbon monomer characterized by its reactive vinyl group. This compound is a critical intermediate in the synthesis of specialty polymers, resins, and fine chemicals, offering significant value in creating materials with tailored properties. It is essential for manufacturers and R&D laboratories in the polymer, adhesive, coating, and fragrance industries seeking to develop advanced products.

Application

• Polymer & Resin Synthesis: A key monomer for producing specialty polymers, including heat-resistant resins and impact modifiers.
• Adhesive & Sealant Formulations: Used to enhance the performance and durability of industrial adhesives and sealants.
• Coating & Paint Industry: Serves as a building block for high-performance coating resins that require excellent weatherability and chemical resistance.
• Fine Chemical & Pharmaceutical Intermediates: An important precursor in the multi-step synthesis of complex organic molecules and active pharmaceutical ingredients (APIs).
• Fragrance & Flavor Compounds: Utilized in the synthesis of specific aromatic chemicals for fragrance applications.
• Crosslinking Agent: Functions as an effective crosslinker in various polymerization processes to improve polymer network strength.
• Research & Development: A valuable reagent for academic and industrial R&D in organic chemistry and material science.

Basic Information

Product Name	M,α-Dimethylstyrene
CAS No.	1124-20-5
Molecular Formula	C10H12
Molecular Weight	132.20 g/mol
Synonyms	2,4-Dimethylstyrene; 2,4-Dimethylvinylbenzene; m,α-Dimethylstyrene; 1-Ethenyl-2,4-dimethylbenzene; 2,4-Dimethylphenylethylene; NSC 6185; α,2,4-Trimethylstyrene (common misnomer, verify structure); Vinyl-m-xylene
EINECS	214-389-8

Quality Control

Our M,α-Dimethylstyrene is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot is analyzed against rigorous internal specifications, which typically include identity confirmation, assay, and impurity profile analysis. Certificates of Analysis (COA) detailing all test results are provided with every shipment and are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and incompatible materials. Due to its properties of being light-sensitive and easily oxidized, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation and to minimize polymerization. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Related Substances (GC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%
Refractive Index (20°C)	1.535 - 1.545
Density (20°C)	0.910 - 0.920 g/mL

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