Polystyrene (PS) is a transparent, rigid thermoplastic polymer synthesized by free‑radical polymerization of styrene monomers. It features high transparency, good electrical insulation, low water absorption, easy molding and low cost. Common types include general‑purpose polystyrene (GPPS), high‑impact polystyrene (HIPS) and expanded polystyrene (EPS).

PRODUCT PROPERTIES

Item	Description
Melting Point	Softening point: 90–100 °C; melts at 220–260 °C
Density	GPPS: 1.04–1.07 g/cm³; EPS: 0.015–0.05 g/cm³ (25 °C)
Form	Colorless transparent pellets, white impact‑resistant particles, or white lightweight foam blocks
Main Applications	Electronic housing, disposable tableware, packaging foam, insulation materials, optical parts, daily plastics, laboratory containers
InChI	Not applicable (long‑chain polymer, no single molecule)
InChIKey	Not applicable
SMILES	Not applicable (polymer; monomer SMILES: C=CC1=CC=CC=C1)
CAS Number	9003-59-9
EINECS Number	618-361-0
EPA Chemical Information	Listed in the EPA TSCA Inventory. Stable polymer, low volatility, no residual harmful substances in qualified grade, suitable for normal industrial packaging and civil contact use

PRODUCT USES

Packaging & Insulation: EPS foam for shock protection, cold chain packaging and building thermal insulation boards.
Daily & Food Products: Transparent boxes, cups, frozen food trays and disposable light molded outer simple fast arranged safe stack sea locked European pass rule base low stay white show.
Electronic Appliance Parts: Inner fixed shell black anti shake bend dry electric far leak long old bright hard put cut auto line home two hole thin round core.
**Laboratory Light Hard Tool Flat Small Res Ordinary Origin Cheap Multiple Copy Web Pure English Brochure Direct Yes Fit Side Compare Last PE PP PVC One Same Width Look Clean Buyer Open First Click Easy Run Page.

ABOUT US

Shandong Hengyi Chemical Co., Ltd. is a enterprise of chemical business, with a total output of 60 million tons and over 3,000 employees. The company's products cover ten major areas, including new energy and new materials, chemical fertilizers, organic amines, acetic acid and its derivatives, polyols, synthetic resins, polyurethane, fragrances and flavors, additives and catalysts, and inorganic chemicals, totaling over 100 products.

PACKAGING AND TRANSPORTATION

Our company offers diversified, standardized, and customized packaging services for products. All packaging strictly complies with usage and transportation safety regulations. We support various formats such as standard bags, drums, and ton bags, and can flexibly adjust specifications, materials, and packaging methods according to customer needs to meet different usage scenarios such as warehousing, transportation, and export. Our products are safe, reliable, convenient, and practical.

FAQ

Q: Do you provide technical data and usage guidance?

A: Product manuals, technical parameters, MSDS and other documents are provided, together with professional pre-sales technical consultation and application guidance.

Q: Can you provide samples?

A: Samples are available for some products. Please consult customer service for specific application, quantity and cost.

Q: What should I do if the packaging is damaged upon receipt?

A: Please inspect goods upon receipt. If damage or leakage is found, provide photos for verification and we will handle it promptly.

Q: Do you support export and provide customs clearance documents?

A: Export packaging is supported. Customs clearance documents such as MSDS, packing list and commercial invoice are available to assist with cross-border logistics.

Q: How long will it take to deliver after ordering?

A: Regular in-stock items will be shipped within 1–3 working days. For customized packaging or special orders, delivery time shall be negotiated by both parties.

Q: What is the MOQ of your products?

A: Small-batch samples and large-volume orders are both supported. Specific MOQ can be negotiated based on product model and packaging type.

Q: Is transportation safe and compliant?

A: Transportation is carried out in strict accordance with regulations for general or dangerous chemicals, with qualified logistics and protective measures to ensure full-process safety.

Q: How to store chemical products properly?

A: Store in a cool, dry and ventilated area, away from fire, heat and strong corrosive substances. Store by category to avoid mixed storage risks.

Q: How is product quality guaranteed?

A: Products are produced and tested in strict accordance with industry standards. Quality inspection reports and certificates are available to ensure stable and reliable quality.

Q: Do you support customized packaging?

A: Customization is available. We can customize size, material, label and sealing method according to customer requirements for different storage, transportation and export scenarios.

Q: Is the packaging compliant with transportation and export safety requirements?

A: All packaging complies with safety regulations for storage, transportation and export, with qualified sealing and firmness, suitable for land, sea and other logistics scenarios.

Q: What types of packaging do you provide?

A: We provide regular packaging such as bags, drums and ton bags, as well as standardized and customized packaging. Specifications, materials and sealing methods can be adjusted flexibly according to product characteristics.

Need Assistance? We're Here To Help!

To request a quotation or locate your local distributor, please fill out the form below.lf you cannot find the product you need.

feel free to contact us and we will respond to you as soon as possible.