2-(4-Phenylphenoxy)ethyl methacrylate
CAS121711-42-0
2-(4-Phenylphenoxy)ethyl methacrylate (CAS 121711-42-0), also known as biphenyloxyethyl methacrylate, is a monofunctional methacrylate monomer carrying a rigid biphenyl ether group. The aromatic biphenyl unit raises the refractive index of cured resins, making it a building block for UV-curable optical materials, lenses and coatings. KingPharm supplies 2-(4-phenylphenoxy)ethyl methacrylate for R&D and production with a batch-specific certificate of analysis.
- CAS No.
- 121711-42-0
- Formula
- C18H18O3
- Mol. weight
- 282.33 g/mol
- Purity
- 95.00
- Appearance
- Off-white to Light-brown Solid
Product Description
2-(4-Phenylphenoxy)ethyl methacrylate (C18H18O3, MW 282.3) consists of a methacrylate group linked through an ethylene oxide spacer to a 4-biphenylyl ether. It is a monofunctional monomer used in free-radical, especially UV-initiated, polymerization.
During curing the methacrylate double bond enters the polymer backbone, while the pendant biphenyl group remains as a side chain. The highly polarizable, conjugated biphenyl unit increases the refractive index and rigidity of the network; patent literature describes biphenyloxy mono- and di(meth)acrylate compositions that cure rapidly under UV light into transparent, high-refractive-index resins.
Compared with phenoxyethyl methacrylate, the additional phenyl ring gives a higher aromatic content per molecule, so less monomer is needed to reach a target refractive index. As a monofunctional monomer it can also act as a reactive diluent, adjusting viscosity and crosslink density in multifunctional acrylate formulations.
For procurement, specify purity (HPLC or GC), stabilizer type and content, color, and acid value or residual methacrylic acid where relevant to optical clarity. KingPharm provides a batch-specific COA; specification and SDS are available on request.
Chemical Specifications
Identifiers
| CAS number | 121711-42-0 |
|---|---|
| Product name | 2-(4-Phenylphenoxy)ethyl methacrylate |
| Chinese name | 甲基丙烯酸对苯基苯氧乙基酯 |
| Molecular formula | C18H18O3 |
| Molecular weight | 282.33 g/mol |
Specification
| Test | Specification | Method |
|---|---|---|
| 指定单杂 | 4-Phenylphenol NMT 5.00% | 4-Phenylphenol |
| 指定单杂 | 4-Phenylphenoxy ethanol NMT 5.00% | 4-Phenylphenoxy ethanol |
| Appearance | Off-white to Light-brown Solid | 外观-4.1.3 |
| Purity | 95.00 | 纯度（GC） |
| Loss on Drying | 0.50 | 干失 |
Applications
Its biphenyl side group makes it a refractive-index-raising monomer in UV-curable optical formulations.
Optical lens resins
Used as a high-refractive-index comonomer in cast or UV-cured resins for eyeglass and camera lenses.
Optical films and coatings
Raises the refractive index of UV-curable coatings and microstructured films such as brightness-enhancement prism layers.
LED encapsulants and optical adhesives
Formulated into transparent sealing agents and glass adhesives where refractive-index matching is required.
Holographic photopolymers
Serves as a high-index writing monomer in photopolymer recording materials to increase refractive-index modulation.
Quality Documentation
The following documents can be provided for 2-(4-Phenylphenoxy)ethyl methacrylate to support technical evaluation and purchasing. Documents are issued for the specific grade and batch supplied.
-
Certificate of Analysis (COA) Batch-specific test results against the specification.
-
Product specification The release specification with test items, limits and methods.
Packaging, Storage & Transport
| Storage Temp | 室温, 干燥通风，密闭容器<br>Room Temp., Dry, Tighten Container ( ℃ ) |
|---|---|
| Available pack sizes | 25 kg, 10 kg, 1 kg, 500 g, 100 g, 25 g |
Read the current safety data sheet before handling. Packaging can be adapted to the order quantity and destination.
Frequently Asked Questions
How does it compare with phenoxyethyl methacrylate?
The extra phenyl ring gives a higher aromatic content, so it raises refractive index more efficiently, with a more rigid side group.
Can it be used as a reactive diluent?
Yes. As a monofunctional methacrylate it can reduce crosslink density and adjust viscosity while keeping the refractive index of the formulation high.
How should it be stored?
Keep tightly closed in a cool, dark place away from heat, light and radical initiators to prevent premature polymerization; if stabilized with a phenolic inhibitor, store under air rather than inert gas.
What is the CAS number of 2-(4-Phenylphenoxy)ethyl methacrylate?
The CAS Registry Number of 2-(4-Phenylphenoxy)ethyl methacrylate is 121711-42-0.
What is the molecular formula and molecular weight of 2-(4-Phenylphenoxy)ethyl methacrylate?
The molecular formula of 2-(4-Phenylphenoxy)ethyl methacrylate is C18H18O3, and its molecular weight is 282.33 g/mol.
What is 2-(4-Phenylphenoxy)ethyl methacrylate used for?
Its biphenyl side group makes it a refractive-index-raising monomer in UV-curable optical formulations.
Which quality documents are available for 2-(4-Phenylphenoxy)ethyl methacrylate?
The following documents are available for 2-(4-Phenylphenoxy)ethyl methacrylate: Certificate of Analysis (COA); Product specification. Contact KingPharm to request the documents for a specific batch.
How can I request a quotation for 2-(4-Phenylphenoxy)ethyl methacrylate?
Send an inquiry for 2-(4-Phenylphenoxy)ethyl methacrylate (CAS 121711-42-0) with the required quantity, target specification, destination country and any documentation requirements. KingPharm will confirm availability, packaging, lead time and price.
Request a Quote for 2-(4-Phenylphenoxy)ethyl methacrylate
Tell us the required quantity, target specification, destination country and any documentation requirements. We will confirm availability, packaging, lead time and price.
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