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Description and features

SilQon Memo (3-trimethoxysilylpropyl methacrylate), is a colorless clear liquid which has C10H20O5Si as chemical formula, is used as adhesion promoter at (in)organic interfaces or as surface modifier or as crosslinker of polymers. It is used as a coupling agent to improve the physical and electrical properties of glass-reinforced and mineral-filled thermosetting resins if exposed to heat and/or moisture. It is typically employed as a blend additive in resin systems that cure via a free radical mechanism (e.g. polyester, acrylic) and in filled or reinforced thermoplastic polymers, including polyolefins and polyurethanes. It is also used to functionalize resins via radical initiated processes – copolymerization or grafting – and to modify surfaces.

3-trimethoxysilylpropyl methacrylate is also known as Triethoxyoctylsilane and N-Octyltriethoxysilane.


Europe: Provided SilQon Memo is on stock in our local warehouse our lead time is about one week if delivered in 1.000 Kg IBC’s.

United States, Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

This substance (CAS: 2530-85-0) has been registered (FULL substance) under REACH (EC) 1907/2006.

Product Identification

CAS number 2530-85-0
EC number 219-785-8
HS code 2931 90 00
EC name 3-trimethoxysilylpropyl methacrylate
IUPAC name 3-(trimethoxysilyl)propyl 2-methylprop-2-enoate


AppearanceTransparent liquid
Assay≥ 98.00 %
Specific Gravity 1.040 ~1.050 @ 20ºC g/cm3
Refractive Index 1.4245-1.4340


SilQon Memo can be used as a constituent of glass fiber size (glass fiber fillers for unsaturated polyester resins and polyolefins) and as finish for glass fabrics used in unsaturated polyester resins. Further it finds its application as a surface modifier for pigments and fillers for thermosets (unsaturated polyester, MMA), thermoplastics (polyesters and polyolefins) and elastomers. Additionally it is being used as an additive for filled, peroxide-cross-linked elastomers and as an additive for casting resins (unsaturated polyester, MMA).


Available packaging: 25 KG drum, 200 KG drum, 1.000 KG IBC.
Special packaging is available on request.


Store 3-Glycidoxypropyltrimethoxysilane in a cool, dry and well-ventilated area and in line with legal requirements.
Keep Silqon Glymo away from heat sources and oxidizing agents.


A Material Safety Data Sheets (MSDS) is available for SilQon Memo and all other products supplied by Vesta Chemicals BV.

An MSDS describes the hazards of a product and explains how a product can be safely handled, used and stored. Besides it provides important regulatory and emergency response information for the purchased product.

Molecular and structural information

Molecular formula C10H20O5Si
Molecular weight 248.35 g/mol
Smiles notation CC(=C)C(=O)OCCC[Si](OC)(OC)OC
Structural formula Chemical name: 3-trimethoxysilylpropyl methacrylate CAS number: 2530-85-0

Physicochemical information

Boiling point 253 ºC @ 101 325 Pa
Bulk density 1.04 g/cm3 @ 20 ºC
Flash point 100 – 110 ºC @ 1013 hPa
Log Pow 2.1 @ 21 ºC
Solubility in water 2.200 mg/l @ 20 ºC
Vapor pressure 2.30 Pa @ 25 ºC

3-trimethoxysilopropyl methcrylate | CAS: 2530-85-0 | Disclaimer. This information is supplied solely for informational purposes and Vesta Chemicals bv makes no guarantees or warranties, either expressed or implied, with respect to the accuracy and use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale. Nothing in this document is legal advice or is a substitute for competent legal advice.