Molekula
3-Aminopropyltriethoxysilane
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
3-Aminopropyltriethoxysilane is an organosilane coupling agent widely used to improve adhesion between organic materials (e.g., polymers, metals) and inorganic substrates (e.g., glass, ceramics). It enhances bonding in composites, coatings, and adhesives through covalent linkages. Catalogue details: CAS 919-30-2, molecular formula H2N(CH2)3Si(OC2H5)3, molecular weight 221.37 g/mol, stored at ambient conditions. Marked with a **Danger** signal word due to potential hazards. Molekula supplies 3-Aminopropyltriethoxysilane 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.
Often bought together
Pricing & pack sizes
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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500 mL — £58.00 per pack ex VAT · £69.60 inc. VAT
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100 g — £28.00 per pack ex VAT · £33.60 inc. VAT
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500 g — £60.60 per pack ex VAT · £72.72 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 | Colourless transparent liquid |
| Refractive Index | 1.4180 - 1.4220 |
| Identification | Conforms to reference |
| Specific Gravity | 0.941 - 0.946 |
| Content (GC) | ≥ 98 % |
| Insoluble in water | ≤ 0.2% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 96 °C |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Base |
For research use only. Not for human use.
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Liquid |
| Melting Point | -70 °C |
| Boiling Point | 217 °C |
| Vapour Pressure | 0.01 mmHg |
| Refractive Index | 1.4225 |
Source: PubChem CID 13521 (HSDB, Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 15593108 |
| CAS Number | 919-30-2 |
| IUPAC Name | 3-triethoxysilylpropan-1-amine |
| EC Number | 213-048-4 |
| Molecular Formula | H2N(CH2)3Si(OC2H5)3 |
| Molecular Weight | 221.37 |
| Exact Mass | 221.1447 |
| SMILES | CCO[Si](CCCN)(OCC)OCC |
| InChIKey | WYTZZXDRDKSJID-UHFFFAOYSA-N |
| InChI | InChI=1S/C9H23NO3Si/c1-4-11-14(12-5-2,13-6-3)9-7-8-10/h4-10H2,1-3H3 |
| PubChem CID | 13521 |
| UN Number | UN2735 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29319090 |
| 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
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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.
Synonyms
- 1-Propanamine, 3-(triethoxysilyl)-
- 3-(TRIETHOXYSILYL)PROPYLAMINE
- Aminopropyltriethoxysilane
- APTES
- Nuca 1100
- Propylamine, 3-(triethoxysilyl)-
- Silane 1100
- Silane amg-9
- Silicone A-1100
- Triethoxy(3-aminopropyl)silane
Frequently asked questions
What is 3-Aminopropyltriethoxysilane (CAS 919-30-2) commonly used for?
It is primarily used as a silane coupling agent to improve adhesion between organic polymers and inorganic materials, such as glass, metals, and fillers, in composites, adhesives, and coatings.
What is the molecular formula and molecular weight of 3-Aminopropyltriethoxysilane?
The molecular formula is **H₂N(CH₂)₃Si(OC₂H₅)₃**, and the molecular weight is **221.37 g/mol**.
How should 3-Aminopropyltriethoxysilane be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture and direct sunlight.
What grades or purity levels of 3-Aminopropyltriethoxysilane does Molekula supply?
Molekula supplies **technical-grade (97%+ purity)** 3-Aminopropyltriethoxysilane for industrial applications.
Can Molekula supply 3-Aminopropyltriethoxysilane in bulk quantities?
Yes, we offer **bulk packaging options** (drums, IBCs) for large-scale industrial orders—please contact us for specific quantities.
What documentation is provided with an order of 3-Aminopropyltriethoxysilane?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
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.