Polystyrene (GPPS/HIPS)
General-purpose and high-impact polystyrene for packaging, disposables and housewares.
Westlake Styrene Monomer
Reliable supply of Westlake styrene monomer (CAS 100-42-5) for polymer producers worldwide.
Ascent Group Co., Ltd supplies Westlake-brand styrene monomer in drums, ISO tanks and bulk shipments, backed by responsive export service and consistent product quality.
About Ascent Group
Your Styrene Supply Partner
Ascent Group Co., Ltd is a chemical supply company focused on connecting polymer producers with dependable styrene monomer sources. We supply Westlake-brand styrene monomer to customers in plastics, rubber and resins manufacturing, handling documentation, logistics and after-sales support so buyers can concentrate on production.
- Focused on styrene monomer and styrene-chain feedstocks
- Export experience across multiple regions and markets
- Clear documentation: COC/SDS provided with each shipment
- Responsive technical and commercial support from inquiry to delivery
Our Product
Westlake Styrene Monomer
Styrene monomer (vinylbenzene, CAS 100-42-5) is a clear, colorless aromatic liquid and one of the most important building blocks in the polymer industry. Westlake is an established North American producer of styrene monomer. Product supplied through Ascent Group is inhibited with tert-butylcatechol (TBC) to prevent premature polymerization during storage and transport, and ships with supplier certificates of conformance.
CAS No.: 100-42-5
Molecular formula: C8H8
MW: 104.15 g/mol
TBC inhibitor 10–15 ppm
Purity typically ≥ 99.7%
Quality & QC
Typical Properties
Values are typical literature/supplier-published figures for inhibited styrene monomer; lot-specific data is governed by the supplier certificate of conformance.
| Property | Value |
|---|---|
| Purity | ≥ 99.7% (typical, per supplier COC) |
| Appearance | Clear, colorless liquid |
| Density (20 °C) | ~0.906–0.909 g/cm³ |
| Boiling point | 145 °C |
| Melting point | −30.6 °C |
| Flash point (closed cup) | 31 °C |
| Refractive index (20 °C) | ~1.546 |
| Inhibitor (TBC) | 10–15 ppm (typical; per supplier COC) |
| UN number | UN 2055, Class 3, Flammable Liquid |
Applications
Where It's Used
Styrene monomer is the primary feedstock for a wide range of polymers and resins.
EPS Foam
Expanded polystyrene for building insulation and protective packaging.
ABS & SAN Resins
Engineering plastics for automotive, electronics and appliances.
SBR Rubber
Styrene-butadiene rubber for tires, footwear and conveyors.
Unsaturated Polyester Resins (UPR)
Reactive diluent for FRP composites, marine and construction.
Coatings & Adhesives
Styrenic copolymers for paints, sealants and adhesives.
Our Strengths
Why Buyers Choose Us
- Consistent quality — Westlake-brand material with supplier COC on every lot
- Flexible packaging — 200 L drums, ISO tanks and bulk shipments
- Export logistics experience — flammable-liquid (UN 2055) shipping documentation handled
- Fast quotation and inquiry response
- Ongoing supply programs for regular offtake
Export Ready
Packaging & Delivery
Westlake styrene monomer is available in export-standard packaging. As an inhibited, flammable liquid (UN 2055, Class 3), it is stored and shipped cool, out of direct sunlight, with inhibitor levels maintained per supplier guidance.
- 200 L steel drums (approx. 180–190 kg net per drum; confirm exact net weight per lot with COC)
- ISO tanks (approx. 21–22 MT per tank, typical)
- Bulk vessel / tanker shipments for large programs
- Documentation: COC, SDS, dangerous-goods papers
FAQ
Common Questions
What is the minimum order quantity?
MOQ depends on packaging and destination; drum orders, ISO tanks and mixed loads can be quoted — contact us with your volume.
Is the product inhibited?
Yes — material is stabilized with TBC inhibitor; inhibitor level is stated on the supplier certificate of conformance.
What documents do you provide?
COC, SDS and dangerous-goods shipping documentation are provided with each shipment.
Can you ship to my country?
We export to multiple regions. Send your destination port and volume for a shipping proposal.
How do I get a price?
Email sales8@ascent-chem.com or use the contact form — quotes are typically returned within one business day.
Contact
Get Your Styrene Quote
Send your specification, volume and destination — our sales team will respond with pricing and delivery options.
Fast Response
Quotes are typically returned within one business day. Include your volume and destination port for an accurate offer.
