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3-Isocyanatopropyltriethoxysilane

Chemical Name:	3-Isocyanatopropyltriethoxysilane
Product Category:	lsocyanate Silanes \| Silane Coupling Agent
Structural Formula:
CAS No.:	24801-88-5
EINECS:	246-467-6
Molecular Formula:	C₁₀H₂₁NO₄Si
Molecular Weight:	247.36 g/mol
Appearance:	Colorless clear liquid

3-Isocyanatopropyltriethoxysilane Description

3-Isocyanatopropyltriethoxysilane is an organosilicon compound featuring both isocyanate and triethoxysilane functional groups. This dual functionality enables it to act as a coupling agent, enhancing adhesion between organic polymers and inorganic substrates. It is widely utilized in industries such as adhesives, sealants, coatings, and surface treatments.

Chemical Name	3-Isocyanatopropyltriethoxysilane
Synonyms	γ-Isocyanatopropyltriethoxysilane, 3-(Triethoxysilyl)propyl isocyanate
Boiling Point	283°C
Density	0.999 g/mL at 25°C
Flash Point	171°F (77.2°C)
Refractive Index (n²⁰/D)	1.42
Solubility	Hydrolyzes in water; soluble in organic solvents
Uses	Adhesion Promoter: Enhances adhesion between organic polymers and inorganic substrates in adhesives, sealants, and coatings. Crosslinking Agent: Used in moisture-curable urethane adhesives and coatings to improve mechanical properties. Surface Modifier: Improves surface properties of materials, enhancing durability and performance.
Safety and Handling	Hazard Symbols: T+ (Very toxic) 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; S45: In case of accident or if you feel unwell, seek medical advice immediately.
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-Isocyanatopropyltriethoxysilane: Guide

3-Isocyanatopropyltriethoxysilane (CAS 24801-88-5) is a high-performance organosilicon compound widely used as a coupling agent, crosslinker, and surface modifier. Its dual functionality—reactive isocyanate and hydrolyzable silane groups—enables strong adhesion between organic polymers and inorganic substrates, enhancing durability and performance in coatings, adhesives, sealants, and composites. Due to its high reactivity and potential hazards, strict handling, storage, and safety measures are crucial to maintaining stability and effectiveness.