Description

Polystyrene (CAS NO 25086-18-4) is a versatile synthetic aromatic polymer derived from the monomer styrene, valued for its rigidity, clarity, and excellent electrical insulation properties. Its ease of processing and cost-effectiveness make it a fundamental material for a wide range of industrial and consumer applications. This thermoplastic is essential for manufacturers in the packaging, electronics, construction, and disposable goods industries seeking reliable and moldable polymer solutions.

Application

• Packaging Materials: Used in the production of clear food containers, disposable cups, lids, and protective foam packaging (EPS - Expanded Polystyrene).
• Consumer Goods & Appliances: A key component for the housings of electronics, appliances, toys, and cosmetic cases.
• Construction & Building: Employed in insulation boards, light diffusers, and decorative moldings for its thermal and acoustic properties.
• Medical & Laboratory Disposables: Utilized for Petri dishes, test tubes, and diagnostic components where clarity and sterility are required.
• Automotive Components: Found in interior trim, knobs, and instrument panels due to its moldability and finish.
• Electrical & Electronics: Serves as an insulator in capacitors, switches, and other components because of its excellent dielectric properties.

Basic Information

Product Name	Polystyrene
CAS No.	25086-18-4
Molecular Formula	(C8H8)n
Molecular Weight	104.15 (monomer unit)
Synonyms	PS; Poly(1-phenylethylene); Atactic Polystyrene; GPPS (General Purpose Polystyrene); Crystal Polystyrene; Styron; Styrofoam (Expanded PS); Polystyrol; Poly(styrene); Vinylbenzene polymer
EINECS	Contact for details

Quality Control

Our Polystyrene is manufactured under strict quality management protocols to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive testing of key parameters including molecular weight distribution, melt flow index, residual monomer content, and clarity. Certificates of Analysis (COA) detailing these specifications are available upon request for every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources, open flames, and strong oxidizing agents. For expanded polystyrene (EPS) forms, protect from physical damage and solvents.

Specification

Item	Specification
Appearance	Clear, colorless granules or pellets
Identification (IR)	Conforms
Melt Flow Rate (g/10 min)	Grade dependent (e.g., 1.5 - 30)
Vicat Softening Temperature (°C)	> 85
Tensile Strength (MPa)	> 40
Residual Styrene Monomer (ppm)	< 1000
Volatiles (%)	< 0.5

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