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3-Isocyanatopropyltrimethoxysilane

Chemical Name:	3-Isocyanatopropyltrimethoxysilane
Product Category:	lsocyanate Silanes \| Silane Coupling Agent
Structural Formula:
CAS No.:	15396-00-6
EINECS:	239-415-9
Molecular Formula:	C₇H₁₅NO₄Si
Molecular Weight:	205.28 g/mol
Appearance:	Colorless to light yellow liquid

3-Isocyanatopropyltrimethoxysilane Description

3-Isocyanatopropyltrimethoxysilane, also known as γ-Isocyanatopropyltrimethoxysilane, is an organosilicon compound with both isocyanate and silane functionalities. This dual functionality allows it to act as a coupling agent, enhancing adhesion between organic polymers and inorganic substrates. It is commonly used in applications such as adhesives, sealants, and coatings.

Chemical Name	3-Isocyanatopropyltrimethoxysilane
Synonyms	γ-Isocyanatopropyltrimethoxysilane, Silquest A-Link 35
Boiling Point	95-98°C at 10 mm Hg
Density	1.084 g/cm³ at 20°C
Flash Point	108°C
Refractive Index (n²⁰/D)	1.4210
Water Solubility	1000 g/L at 20°C
Uses	Coupling Agent: Enhances adhesion between organic polymers and inorganic substrates in adhesives, sealants, and coatings. Crosslinking Agent: Used in the production of silane-terminated polymers (MS polymers) and silyl-modified polyurethane (SPUR) polymers to improve mechanical properties. Rubber Industry: Acts as a crosslinker and tackifier for room-temperature vulcanizing (RTV) rubbers, enhancing bonding between rubber and substrates.
Safety and Handling	Hazard Symbols: T (Toxic), C (Corrosive) Risk Phrases: R21/22: Harmful in contact with skin and if swallowed. R26: Very toxic by inhalation. R34: Causes burns. R42: May cause sensitization by inhalation. Safety Phrases: S23: Do not breathe vapor. S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39: Wear suitable protective clothing, gloves, and eye/face protection.
Packaging	Our standard packing is net 25kg / 200 kg drums / 1000kg/IBC，or according to your requirements.
Sample	Provided for free
Inventory items	6 tons
Price	Please contact us to get the new price.

Packaging Specifications

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3-Isocyanatopropyltrimethoxysilane: Guide

3-Isocyanatopropyltrimethoxysilane (CAS 15396-00-6) is a highly functional organosilicon compound widely used as a coupling agent, crosslinking agent, and surface modifier in adhesives, coatings, sealants, and composite materials. Its dual-reactive structure, featuring both isocyanate and silane groups, enables strong covalent bonding between organic polymers and inorganic surfaces, enhancing adhesion, durability, and chemical resistance.

This silane is particularly valuable in improving mechanical properties, moisture resistance, and overall material performance. Due to its high reactivity and potential hazards, proper handling, storage, and disposal are essential. Always consult the latest MSDS and industry safety regulations for compliance and safe usage.