Molekula
Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (60% in IPA solution)
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
Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride is a quaternary ammonium silane used as a coupling agent in surface modification and adhesion promotion. It is also applied as an antimicrobial preservative treatment for textiles, paints, coatings and concrete, and as a surface treatment for aligning liquid crystals in displays. It is supplied as a 60% solution in isopropyl alcohol. CAS: 27668-52-6, Molecular formula: C26H58ClNO3Si, Molecular weight: 496.28, Storage: Ambient, Signal word: Danger. Molekula supplies this compound 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
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.
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25 g — £116.70 per pack ex VAT · £140.04 inc. VAT
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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 | Light yellow to amber liquid |
| Water | <0.1% |
| Assay | >60% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 11 °C |
| Transport Class | 3 |
| Packing Group | II |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 27361129 |
| CAS Number | 27668-52-6 |
| IUPAC Name | dimethyl-octadecyl-(3-trimethoxysilylpropyl)azanium chloride |
| EC Number | 248-595-8 |
| Molecular Formula | C26H58ClNO3Si |
| Molecular Weight | 496.28 |
| Exact Mass | 495.3874 |
| SMILES | CCCCCCCCCCCCCCCCCC[N+](C)(C)CCC[Si](OC)(OC)OC.[Cl-] |
| InChIKey | WSFMFXQNYPNYGG-UHFFFAOYSA-M |
| InChI | InChI=1S/C26H58NO3Si.ClH/c1-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-24-27(2,3)25-23-26-31(28-4,29-5)30-6;/h7-26H2,1-6H3;1H/q+1;/p-1 |
| PubChem CID | 62827 |
| UN Number | UN1993 |
| REACH Code | Y110 |
| HTS Code | 3822.19.0080 |
| Tariff Code | 3822900000 |
Safety & GHS
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Flammable
GHS02
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Health Hazard
GHS07
Hazard statements
- H225 Highly flammable liquid and vapour
- H315 Causes skin irritation
- H319 Causes serious eye irritation
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
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.
Synonyms
- (3-(Trimethoxysilyl)propyl)octadecyldimethylammonium chloride
- 3-(Trimethoxysilyl)propyl dimethyl octadecyl ammonium chloride
- 3-(Trimethoxysilyl)propyldimethyloctadecylammonium
- BioShield AM 500
- DMOAP
- Dow Corning 5700
- Goldshield 5
- N-Octadecyldimethyl(3-(trimethoxysilyl)propyl)ammonium chloride
- Octadecyldimethyl(trimethoxysilyl)propylammonium chloride
- Quat-silsesquioxane
Frequently asked questions
What is Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride used for?
It is used as a silane coupling agent in coatings, adhesives, and surface treatments to improve adhesion between organic and inorganic materials.
What is the chemical formula and molecular weight?
The formula is C26H58ClNO3Si with a molecular weight of 496.28 g/mol.
How should this product be stored?
Store at ambient temperature, away from moisture and incompatible materials.
What grade is available?
Available as a 60% solution in isopropyl alcohol (IPA), suitable for industrial and laboratory use.
Can Molekula supply this in bulk?
Yes, Molekula can supply this product in bulk quantities—please contact our sales team 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.