Styrene Monomer, identifiable by CAS 100-42-5, functions as a clear, colorless, oily liquid used primarily as the foundational building block for a vast array of plastics and synthetic rubbers. Chemically defined as Vinylbenzene , this aromatic hydrocarbon serves as the essential precursor for the polymerization of polystyrene (PS), expandable polystyrene (EPS), and acrylonitrile butadiene styrene (ABS). The substance, often referred to as Styrol or Phenylethylene in petrochemical processing, acts as a reactive solvent and crosslinking agent in the manufacturing of unsaturated polyester resins (UPR) and styrene-butadiene rubber (SBR). We facilitate bulk supply of this polymer-grade monomer with competitive factory pricing, capable of meeting customized specifications for inhibitor levels (TBC), backed by comprehensive MSDS, TDS, COA documentation.
Styrene Monomer CAS 100-42-5
- CAS: 100-42-5
- Synonyms: Styrene, Vinylbenzene, Ethenylbenzene, Phenylethene
- Einecs: 202-851-5
- Molecular Formula: C8H8
- Grade: Industrial grade 99%
- Package: 200kg iron drum or 50kg plastic drum packaging
Product Description
Product Name:styrene
Alias: vinylbenzene
Molecular formula:C8H8
Appearance:Colorless transparent liquid
Molecular Weight: 104.15
CAS Accession Number: 100-42-5
EINECS accession number: 202-851-5
Melting point: -30.6 °C
Boiling point: 146 °C
Water Soluble: Insoluble in water
Density: 0.906 g/cm³
Appearance: Colorless and transparent oily liquid
Flash point: 31 °C
Applications: Used to make polystyrene, synthetic rubber, ion exchange resin, etc.; It is used as a monomer for synthetic rubber and plastics to produce styrene-butadiene rubber, polystyrene, and styrofoam; It is also used in the copolymerization of other monomers to make engineering plastics for many different purposes. Styrene is also used in the production of styrene series resins and styrene-butadiene rubber, and is also one of the raw materials for the production of ion exchange resins and pharmaceuticals, in addition, styrene can also be used in pharmaceutical, dye, pesticide and mineral processing industries.
FAQ - Technical & Supply Chain
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Q:
Is Styrene Monomer intended for industrial polymerization rather than laboratory research use?
A: Styrene Monomer is commonly used as an industrial raw material in polymerization processes, supplied for formulation and manufacturing environments rather than small-scale analytical research. -
Q:
Is Styrene Monomer chemically synonymous with Vinylbenzene?
A: Yes, Styrene Monomer and Vinylbenzene refer to the same organic compound identified by CAS 100-42-5, characterized by a benzene ring with a vinyl substituent. -
Q:
Is this monomer suitable for unsaturated polyester resin (UPR) applications?
A: Styrene Monomer is typically applied as a reactive diluent in unsaturated polyester resins, where it reduces viscosity for processing and subsequently crosslinks with the polyester backbone to cure the final composite.
Documents and Product Support
For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.
- COA for batch-based quality reference
- TDS for key physical and chemical information
- SDS / MSDS for handling, storage, and safety reference
- Packing information for sample, trial, and bulk orders
- Technical communication based on application and specification requirements
Information to Confirm Before Quotation
Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.
- Product name and CAS number
- Application or intended end use
- Required purity, grade, or specification
- Sample quantity, trial order, or bulk demand
- Preferred packing form or net weight
- Destination country or port
- Required documents or compliance expectations
Packaging, Storage, and Handling Notes
Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.
Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.
Sample, Bulk Order and Repeat Supply Support
Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.
For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.
