Description

Methylstyrene CAS NO 1319-73-9 is a versatile vinyl aromatic monomer, specifically an isomer of vinyltoluene, prized for its reactivity and ability to modify polymer properties. This compound is a critical intermediate for enhancing the flexibility, adhesion, and chemical resistance of various synthetic resins and polymers. It is essential for manufacturers in the coatings, adhesives, and specialty plastics industries seeking to develop high-performance materials.

Application

• As a reactive diluent and co-monomer in the production of unsaturated polyester resins (UPR) for fiberglass-reinforced plastics.
• Key component in the synthesis of specialty polymers and copolymers for high-performance coatings and industrial paints.
• Used in the formulation of pressure-sensitive and structural adhesives to improve tack and bond strength.
• Intermediate in the manufacture of modified alkyd resins for improved drying times and film properties.
• Employed in the production of synthetic lubricants and oil additives.
• Utilized as a chemical intermediate for further organic synthesis in agrochemicals and pharmaceuticals.

Basic Information

Product Name	Methylstyrene
CAS No.	1319-73-9
Molecular Formula	C9H10
Molecular Weight	118.18 g/mol
Synonyms	Vinyltoluene (mixed isomers); (Methylvinyl)benzene; 1-Ethenyl-2-methylbenzene; 2-Methylstyrene; o-Methylstyrene; Tolyl ethylene; Toluene, vinyl-; NSC 60546
EINECS	215-281-5

Quality Control

Our Methylstyrene is produced under a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analysis, including purity assay and impurity profiling via GC, to meet exacting industry specifications. A Certificate of Analysis (COA) detailing all test results 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, well-ventilated area away from heat sources and ignition points. Due to its highly volatile and easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen) and keep containers tightly sealed when not in use. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.5%
Water Content (KF)	≤ 0.1%
Inhibitor (TBC)	10-50 ppm
Specific Gravity (20°C)	0.900 - 0.910
Refractive Index (20°C)	1.538 - 1.542

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