4-Ethoxystyrene
4-Ethoxystyrene (CAS: 5459-40-5), with the molecular formula H2C=CHC6H4OC2H5 and a molecular weight of 148.20 g/mol, is a functionalized styrene monomer. It is utilized in materials science and polymer science for the synthesis of various polymers. Its reactive vinyl group allows for polymerization and copolymerization, leading to materials with specific thermal and mechanical properties. This compound serves as a key building block in advanced material development.

Polymer Synthesis
4-Ethoxystyrene can be polymerized to create poly(4-ethoxystyrene), a polymer with potential applications in specialty coatings, resins, and advanced materials. Its unique ethoxy substituent can influence the polymer's glass transition temperature and solubility.
Copolymerization
It can be copolymerized with other vinyl monomers to tailor the properties of the resulting polymer. This allows for the development of advanced materials with specific functionalities for demanding applications in electronics or specialized plastics.
Research and Development
As a functionalized styrene derivative, 4-Ethoxystyrene is valuable in academic and industrial research for exploring new polymerization techniques and developing novel polymer architectures and materials.
| Molecular weight | 148.20 |
|---|---|
| Linear formula | H2C=CHC6H4OC2H5 |
| Assay | 90% |
| Grade | technical grade |
| Boiling point | 99-100 °C/11 mmHg(lit.) |
| Density | 0.99 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.549(lit.) |
| Storage temperature | 2-8°C |

Hazard statements
- H302Harmful if swallowed
| Protective equipment | Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | 88 °C / 190.4 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-Ethoxystyrene used for?
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4-Ethoxystyrene is primarily used in polymer synthesis and copolymerization for materials science and polymer research. It acts as a monomer to create polymers with specific properties influenced by its ethoxy substituent.
What is the CAS number and molecular formula for 4-Ethoxystyrene?
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The CAS number for 4-Ethoxystyrene is 5459-40-5, and its molecular formula is H2C=CHC6H4OC2H5.
What grade and purity does Tech Serve Solutions supply for 4-Ethoxystyrene?
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Tech Serve Solutions supplies 4-Ethoxystyrene in technical grade with an assay of 90%. We do not represent this product as USP, BP, or EP grade.
How should 4-Ethoxystyrene be handled safely?
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4-Ethoxystyrene is classified as harmful if swallowed (H302) and requires careful handling. Use appropriate personal protective equipment including eyeshields, gloves, and a suitable respirator. Store the chemical at 2-8°C.
How is 4-Ethoxystyrene packed, shipped, and exported?
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Tech Serve Solutions provides reliable packing, shipping, and global export services for 4-Ethoxystyrene, ensuring product integrity and compliance with international regulations.
How can I request a sample or quote for 4-Ethoxystyrene?
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To request a sample or a detailed quote for 4-Ethoxystyrene, please contact our sales team through the website or by phone.
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