Polystyrene(PS)

Polystyrene (PS)

CAS No.: 9003-53-6

Product Overview

Polystyrene (PS) is a widely used thermoplastic polymer produced by the polymerization of styrene monomers. It is known for its excellent transparency, rigidity, ease of processing, and cost efficiency. Polystyrene is available in various grades, including general-purpose polystyrene (GPPS) and high-impact polystyrene (HIPS), making it suitable for a broad range of industrial and commercial applications.

Due to its stable physical properties and good electrical insulation performance, Polystyrene is commonly used in packaging, consumer goods, electronics, construction, and medical applications.

Chemical Identification

• Product Name: Polystyrene

• Abbreviation: PS

• CAS Number: 9003-53-6

• Chemical Formula: (C₈H₈)ₙ

• Polymer Type: Thermoplastic polymer

• Appearance: Transparent or opaque solid (pellets, beads, or molded forms)

  
  

Key Properties

• Excellent transparency and surface gloss

• Good rigidity and dimensional stability

• Easy to mold, extrude, and thermoform

• Good electrical insulation properties

• Low water absorption

• Cost-effective and widely available

  
  

Typical Applications

• Packaging: Food containers, disposable cups, trays, and protective packaging

• Consumer Products: Household items, toys, CD/DVD cases

• Electronics: Insulation components, appliance housings

• Construction: Thermal insulation boards (EPS/XPS systems)

• Medical & Laboratory: Petri dishes, test tubes, diagnostic components

  
  

Processing Methods

Polystyrene can be processed using standard thermoplastic techniques, including:

• Injection molding

• Extrusion

• Thermoforming

• Blow molding

  
  

Its low processing temperature and stable melt flow make it suitable for high-efficiency mass production.

Storage & Handling

• Store in a cool, dry, and well-ventilated area

• Keep away from direct sunlight and heat sources

• Avoid contact with strong oxidizing agents

• Handle in accordance with standard industrial safety practices

  
  

Frequently Asked Questions (FAQs)

Q1: What is Polystyrene mainly used for?

Polystyrene is mainly used in packaging, consumer goods, electronics, insulation materials, and medical laboratory products due to its rigidity, clarity, and ease of processing.

Q2: What is the difference between GPPS and HIPS?

GPPS (General Purpose Polystyrene) offers high transparency and rigidity, while HIPS (High Impact Polystyrene) is modified with rubber to improve impact resistance.

Q3: Is Polystyrene suitable for food contact applications?

Yes, food-grade Polystyrene is widely used for disposable food packaging when produced in compliance with applicable regulations.

Q4: Is Polystyrene recyclable?

Polystyrene is recyclable under specific recycling streams and can be reprocessed into new plastic products depending on local recycling infrastructure.

Q5: In what forms is Polystyrene supplied?

Polystyrene is commonly supplied in pellets, beads, granules, or customized molded forms depending on application requirements.

Why Choose Our Polystyrene

• Consistent quality and stable performance

• Multiple grades available for different applications

• Reliable supply for industrial and commercial use

• Suitable for global markets and export standards

  
  

Contact Us

For specifications, grades, pricing, or technical support, please contact us:

Email: lisa@aozunchem.com
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We look forward to supporting your Polystyrene sourcing needs.