Molekula
3-Isocyanatopropyltriethoxysilane
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-Isocyanatopropyltriethoxysilane is a silane coupling agent used to improve adhesion between organic polymers and inorganic substrates in coatings, adhesives, and composites. It features an isocyanate functional group for reactivity with hydroxyl-containing surfaces. CAS: 24801-88-5, Molecular Formula: (C2H5O)3Si(CH2)3NCO, Molecular Weight: 247.36 g/mol, Storage: Ambient, Signal Word: Danger.
Molekula supplies 3-Isocyanatopropyltriethoxysilane at ≥94.0% purity (GC) in 25 g packs, from £37.08 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 6 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
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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25 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, colourless liquid |
| Refractive Index | 1.4190 - 1.4240 |
| Assay (GC) | ≥94.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 77 °C |
| Transport Class | 6.1 (8) |
| Packing Group | I |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 29909306 |
| CAS Number | 24801-88-5 |
| IUPAC Name | triethoxy(3-isocyanatopropyl)silane |
| EC Number | 246-467-6 |
| Molecular Formula | (C2H5O)3Si(CH2)3NCO |
| Molecular Weight | 247.36 |
| Exact Mass | 247.124 |
| SMILES | CCO[Si](CCCN=C=O)(OCC)OCC |
| InChIKey | FRGPKMWIYVTFIQ-UHFFFAOYSA-N |
| InChI | InChI=1S/C10H21NO4Si/c1-4-13-16(14-5-2,15-6-3)9-7-8-11-10-12/h4-9H2,1-3H3 |
| PubChem CID | 90613 |
| UN Number | UN3390 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2931909010 |
| Tariff Code | 2931900028 |
Safety & GHS
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Corrosive
GHS05
-
Toxic
GHS06
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Serious Health Hazard
GHS08
Hazard statements
- H302 Harmful if swallowed
- H312 Harmful in contact with skin
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
- H330 Fatal if inhaled
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P284 Wear respiratory protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+312 IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
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
- .GAMMA.-(TRIETHOXYSILYL)PROPYL ISOCYANATE
- .gamma.-Isocyanopropyltriethoxysilane
- 3-(ISOCYANOPROPYL)TRIETHOXYSILANE
- 3-(Triethoxysilyl)propyl isocyanate
- 3-ISOCYANANOPROPYLTRIETHOXYSILANE
- Isocyanic acid, 3-(triethoxysilyl)propylester
- Silane, triethoxy(3-isocyanatopropyl)-
- TRIETHOXY(.GAMMA.-ISOCYANATOPROPYL)SILANE
- Triethoxy(3-isocyanatopropyl)silane
- triethoxysilylpropyl isocyanate
Frequently asked questions
What is 3-Isocyanatopropyltriethoxysilane 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 (C2H5O)3Si(CH2)3NCO with a molecular weight of 247.36 g/mol.
How should this product be stored?
Store at ambient temperature, away from moisture and incompatible materials.
What grade is available?
The product is supplied as a clear, colourless liquid with an assay of ≥94.0% (GC) and a refractive index of 1.4190 - 1.4240.
Can Molekula supply this in bulk?
Yes, Molekula can supply 3-Isocyanatopropyltriethoxysilane in bulk quantities—please contact sales for details.
What documentation comes with the order?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) compliant with GHS standards.
Where can I buy 3-Isocyanatopropyltriethoxysilane?
Directly from Molekula, which lists 3-Isocyanatopropyltriethoxysilane in 25 g packs from £37.08 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Is 3-Isocyanatopropyltriethoxysilane dangerous goods for shipping?
Yes. 3-Isocyanatopropyltriethoxysilane ships as dangerous goods: UN3390, class 6.1 (8), packing group I.
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.