Bis[3-(triethoxysilyl)propyl]amine
[CAS# 13497-18-2]

Identification

• Classification: Chemical reagent >> Silane reagent
• Name: Bis[3-(triethoxysilyl)propyl]amine
• Molecular Formula: C₁₈H₄₃NO₆Si₂
• Molecular Weight: 425.71
• CAS Registry Number: 13497-18-2
• EC Number: 236-818-1
• SMILES: CCO[Si](CCCNCCC[Si](OCC)(OCC)OCC)(OCC)OCC

Properties

• Density: 0.973
• Boiling point: 160 ºC (0.6 mmHg)
• Refractive index: 1.429
• Flash point: 162 ºC

Safety Data

• Hazard Symbols: GHS05;GHS07 Danger
• Hazard Statements: H314-H315-H319
• Precautionary Statements: P260-P264-P264+P265-P280-P301+P330+P331-P302+P352-P302+P361+P354-P304+P340-P305+P351+P338-P305+P354+P338-P316-P321-P332+P317-P337+P317-P362+P364-P363-P405-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Eye irritation	Eye Irrit.	2	H319
Skin corrosion	Skin Corr.	1B	H314
Skin sensitization	Skin Sens.	1B	H317
Serious eye damage	Eye Dam.	1	H318
Acute toxicity	Acute Tox.	4	H302
Chronic hazardous to the aquatic environment	Aquatic Chronic	2	H411
Chronic hazardous to the aquatic environment	Aquatic Chronic	3	H412
Skin sensitization	Skin Sens.	1	H317
Acute toxicity	Acute Tox.	4	H332
Specific target organ toxicity - single exposure	STOT SE	3	H335

• Transport Information: UN 3267

Discovory and Applicatios

Bis[3-(triethoxysilyl)propyl]amine is an organosilane compound known for its applications in materials science, particularly in the development of silane coupling agents. The molecule consists of two triethoxysilyl groups attached to a central amine functionality through propyl linkers. This unique structure allows the compound to function as a bridge between organic and inorganic materials, making it valuable in numerous industrial and research applications.

The discovery of bis[3-(triethoxysilyl)propyl]amine originated from the exploration of silane compounds for enhancing the adhesion between dissimilar materials. The triethoxysilyl groups can undergo hydrolysis to form silanols, which can then react with hydroxyl groups present on the surfaces of inorganic materials such as glass, metals, or ceramics. This reaction forms strong covalent bonds, while the amine functionality can interact with organic materials, making this compound a highly effective coupling agent.

One of the most significant applications of bis[3-(triethoxysilyl)propyl]amine is in the formulation of adhesives and sealants. The compound improves the bonding between organic polymers and inorganic substrates, enhancing the durability and strength of the adhesive layer. This makes it particularly useful in industries such as automotive manufacturing, aerospace, and construction, where reliable adhesion is critical for structural integrity.

In addition to its role in adhesion, bis[3-(triethoxysilyl)propyl]amine is employed in the modification of surfaces. It is commonly used to functionalize the surface of silica particles, creating materials with improved mechanical properties or altered surface characteristics. These modified materials are applied in the development of composites, coatings, and fillers, which benefit from enhanced mechanical strength, thermal stability, or chemical resistance.

The compound is also of interest in sol-gel chemistry, where it acts as a precursor for creating hybrid organic-inorganic materials. Through the sol-gel process, bis[3-(triethoxysilyl)propyl]amine can be used to form cross-linked networks that combine the flexibility of organic materials with the rigidity of inorganic structures. These hybrid materials find applications in coatings, membranes, and other advanced materials used in technology and environmental applications.

Bis[3-(triethoxysilyl)propyl]amine continues to be a valuable chemical in research and industry due to its versatility and ability to enhance material performance across a wide range of applications.