[3-(Diethylamino)propyl]trimethoxysilane
[3-(Diethylamino)propyl]trimethoxysilane (CAS 41051-80-3), with the linear formula (C2H5)2N(CH2)3Si(OCH3)3 and a molecular weight of 235.40 g/mol, is a versatile organosilicon compound. It functions as a silane coupling agent and surface modifier. Its unique structure, featuring a tertiary amine and trimethoxysilane groups, enables it to bond organic polymers to inorganic substrates, enhancing material properties in various industrial applications.
- IUPAC
- N,N-Diethyl-3-(trimethoxysilyl)propylamine
- Synonyms
- N,N-Diethyl-3-(trimethoxysilyl)propylamine
![[3-(Diethylamino)propyl]trimethoxysilane ((C2H5)2N(CH2)3Si(OCH3)3) — chemical structure, CAS 41051-80-3; Chemistry, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F41051-80-3.png&w=3840&q=75)
Surface Modification
This silane is employed to modify the surface properties of inorganic materials, such as glass and metal oxides. It can improve adhesion, compatibility, and hydrophobicity by creating a functionalized interface.
Adhesion Promoter
It acts as an effective adhesion promoter between organic resins and inorganic fillers or substrates in composites, coatings, and adhesives. This improves the durability and performance of the final product.
Chemical Synthesis Intermediate
The compound serves as a valuable intermediate in organic synthesis, particularly for introducing aminopropyl or trimethoxysilyl functionalities into more complex molecules.
Materials Science Research
Utilised in research settings for developing advanced materials, including self-assembled monolayers and functionalised nanoparticles for applications in microelectronics and sensors.
| Molecular weight | 235.40 |
|---|---|
| Linear formula | (C2H5)2N(CH2)3Si(OCH3)3 |
| Assay | 96% |
| Boiling point | 120 °C/20 mmHg(lit.) |
| Density | 0.95 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.423(lit.) |


Hazard statements
- H315Causes skin irritation
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 100 °C / 212 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 37/38-41 |
| Safety statements (S) | 26-39 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is [3-(Diethylamino)propyl]trimethoxysilane used for?
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[3-(Diethylamino)propyl]trimethoxysilane is primarily used as a surface modifier, adhesion promoter, and intermediate in chemical synthesis, particularly in materials science and microelectronics applications.
What is the CAS number and formula for this compound?
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The CAS number is 41051-80-3 and the linear formula is (C2H5)2N(CH2)3Si(OCH3)3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with a minimum assay of 96%. This is a technical/research grade material, and TSS does not represent it as USP, BP, or EP grade.
What are the main safety hazards associated with this chemical?
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This compound is classified as Danger, with hazards including skin irritation (H315), serious eye damage (H318), and respiratory irritation (H335).
How is this chemical typically packed and exported?
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Tech Serve Solutions carefully packs and exports this chemical, adhering to all relevant international shipping regulations to ensure safe and timely delivery worldwide.
How can I request a sample or quote?
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To request a sample or a quotation, please contact our sales team via the website or provided contact details, specifying the product name and CAS number.
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