Molekula
3-Acryloxypropyl(trimethoxy)silane (stabilized with BHT)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
3-Acryloxypropyl(trimethoxy)silane (stabilized with BHT) is a silane coupling agent used to improve adhesion between organic polymers and inorganic substrates in coatings, adhesives, and composites. It features a reactive acrylate group and three methoxy groups for crosslinking. CAS: 4369-14-6, molecular formula: H2C=CHCO2(CH2)3Si(OCH3)3, molecular weight: 234.32 g/mol. Store refrigerated at 2 to 8 °C. Signal word: Danger. Molekula supplies 3-Acryloxypropyl(trimethoxy)silane (stabilized with BHT) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 25 November 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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5 g — £30.90 per pack ex VAT · £37.08 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Clear liquid |
| Boiling Point | 68 Deg C |
| Stabiliser | BHT 50ppm |
| Assay GC | >97% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Flash Point | 123 °C |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 89997446 |
| CAS Number | 4369-14-6 |
| IUPAC Name | 3-trimethoxysilylpropyl prop-2-enoate |
| EC Number | 419-560-6 / 610-134-7 |
| Molecular Formula | C9H18O5Si |
| Molecular Weight | 234.32 |
| Exact Mass | 234.0924 |
| SMILES | CO[Si](CCCOC(=O)C=C)(OC)OC |
| InChIKey | KBQVDAIIQCXKPI-UHFFFAOYSA-N |
| InChI | InChI=1S/C9H18O5Si/c1-5-9(10)14-7-6-8-15(11-2,12-3)13-4/h5H,1,6-8H2,2-4H3 |
| PubChem CID | 151204 |
| UN Number | UN1760 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2931.90.9010 |
| Tariff Code | 2931900090 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
- H332 Harmful if inhaled
- H335 May cause respiratory irritation
- H412 Harmful to aquatic life with long lasting effects
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
- P302+P352 IF ON SKIN: Wash with soap and water
- P304+P340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
Documents
Safety Data Sheets (SDS)
Available in English, German, Spanish, French, Italian, Portuguese, Arabic, Dutch.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 2-Propenoic acid, 3-(trimethoxysilyl)propyl ester
- 3-(Acryloyloxy)propyltrimethoxysilane
- 3-(Trimethoxysilyl)propyl 2-propenoate
- 3-(Trimethoxysilyl)propyl acrylate
- 3-Acryloxypropyltrimethoxysilane
- 3-Acryloxypropyltrimethoxysilane, stab. with 100ppm BHT
- 3-AOPTMS
- 3-trimethoxysilylpropyl prop-2-enoate
- acrylic acid, 3-(trimethoxysilyl)propyl ester
- acryloxypropyltrimethoxysilane
Frequently asked questions
What is 3-Acryloxypropyl(trimethoxy)silane used for?
It is used as a coupling agent in adhesives, coatings, and composites to improve adhesion between organic materials and inorganic substrates.
What is the chemical formula and molecular weight?
The formula is H2C=CHCO2(CH2)3Si(OCH3)3 with a molecular weight of 234.32 g/mol.
How should this product be stored?
Store refrigerated at 2 to 8 °C; keep away from heat and incompatible materials.
What grade is available?
Available as a stabilized grade with BHT; purity is typically 98% minimum.
Can Molekula supply this in bulk?
Yes, Molekula can supply this product in bulk quantities; please contact sales for pricing and availability.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.