Polyethylene glycol monomethyl ether monomethacrylate (PEGMMA 400) -

Product Number:

16665

CAS #

26915-72-0

Size

Price

$44.00

Quantity

Bulk Request

Request a Bulk Quote

Product Specifications

Spec-16665.pdf

Linear Formula

H2C=C(CH3)CO2(CH2CH2O)nCH3

Appearance

Light yellow transparent liquid

Molecular Weight

MW of PEG Block= 400

Synonyms

Inhibitor

~100 ppm MEHQ

Refractive Index

1.46

Safety Data Sheet (SDS)

SDS_16665.pdf

Handling

Glove, chemical goggles & fume hood

Storage

Store at 4°C

Hazards

Hazard Code

BHJO6d

Product Description

Polyethylene glycol monomethyl ether monomethacrylate (PEGMMA 400), also called PEG methyl ether methacrylate or PEGMEMA, is a hydrophilic macromonomer with one polymerizable methacrylate group and a methoxy-terminated PEG chain.

Polymerization incorporates the methacrylate group into the polymer backbone, leaving the PEG chain as a pendant side chain. PEGMMA is used to introduce hydrophilic segments into polymers and prepare comb polymer architectures.

PEGMMA 400 is a clear to pale yellow liquid. The 400 designation refers to the approximate molecular weight of the PEG block, rather than the complete functionalized macromonomer.

Key Properties

Product number: 16665
CAS number: 26915-72-0
Molecular formula: (C₂H₄O)_nC₅H₈O₂
PEG block molecular weight: Approximately 400g/mol
Physical form: Clear to pale yellow liquid
Functionality: One methacrylate group per macromonomer
PEG chain end group: Methyl ether
Synonyms: Poly(ethylene glycol) methyl ether methacrylate; PEGMEMA; PEG-MEMA

Applications

Hydrophilic Copolymer Synthesis

PEGMMA is used as a comonomer to introduce hydrophilic PEG side chains into polymers. Its methacrylate group provides the site for free-radical polymerization.

Comb Polymer Preparation

Polymerization of PEGMMA produces polymers with pendant PEG chains. The macromonomer provides a route to comb architectures without requiring attachment of PEG chains after backbone synthesis.

Polymer Emulsion Stabilization

PEGMMA is used in polymer emulsion formulations to incorporate hydrophilic segments that contribute to stabilization. Performance depends on the formulation and polymerization process.

Polymerization & Product Identity Considerations

One methacrylate group provides a polymerizable site; the opposite PEG terminus is methyl-capped
PEGMMA differs from PEG dimethacrylate, which has two methacrylate groups and serves as a crosslinking monomer
The variable n in the molecular formula denotes the number of ethylene oxide repeat units
Review lot-specific inhibitor results when establishing polymerization conditions
Properties of the resulting polymer depend on composition and architecture; they are not specifications of the liquid macromonomer

Storage & Product Selection

Store at 4°C in a well-ventilated place
Package sizes: 10g, 100g and 500g
Package catalog numbers: 16665-10, 16665-100 and 16665-500
Review the product specification and request a lot-specific Certificate of Analysis for reported inhibitor and other test results
Review the PEGMMA 400 SDS; use protective gloves, eye protection and adequate ventilation, and avoid skin and eye contact
For larger quantities, request a bulk quote and specify PEGMMA 400, product 16665

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FAQ

Click a question to expand.

1. What is PEGMMA 400 used for?

PEGMMA 400 is used in polymer synthesis to incorporate hydrophilic PEG side chains, prepare comb polymers, and contribute to polymer emulsion stabilization.

2. Is PEGMEMA the same as PEGMMA?

PEGMEMA and PEGMMA are abbreviations used for poly(ethylene glycol) methyl ether methacrylate. PEGMA is less specific and can also refer to hydroxyl-terminated PEG methacrylate. Check the end-group structure and molecular-weight designation when comparing products.

3. What does the 400 designation mean?

It refers to the approximate PEG block molecular weight of 400g/mol. It does not represent the molecular weight of the complete functionalized macromonomer.

4. Is PEGMMA 400 the same as PEG methyl ether or PEG dimethacrylate?

No. PEGMMA has one polymerizable methacrylate group and one methyl ether terminus. PEG methyl ether lacks the methacrylate group. PEG dimethacrylate has two methacrylate groups and is used for crosslinking.

5. What is the appearance and CAS number of PEGMMA 400?

PEGMMA 400 is a clear to pale yellow liquid with CAS number 26915-72-0.

6. How should PEGMMA 400 be stored and handled?

Store at 4°C in a well-ventilated place. Use protective gloves, eye protection and adequate ventilation, and avoid skin and eye contact. Follow the product-specific SDS for full handling guidance.

7. Where can I find inhibitor information for PEGMMA 400?

The product specification includes MEHQ and BHT inhibitor testing. Request the Certificate of Analysis for your lot to review the reported results before selecting polymerization conditions.