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3-Isocyanatopropylmethyldiethoxysilane

Chemical Name:	3-Isocyanatopropylmethyldiethoxysilane
Product Category:	lsocyanate Silanes \| Silane Coupling Agent
Structural Formula:
CAS No.:	33491-28-0
EINECS:	251-249-9
Molecular Formula:	C₉H₁₉NO₃Si
Molecular Weight:	217.34 g/mol
Appearance:	Colorless to light yellow transparent liquid

3-Isocyanatopropylmethyldiethoxysilane Description

3-Isocyanatopropylmethyldiethoxysilane is an organosilicon compound featuring both isocyanate and diethoxysilane functional groups. This unique structure enables it to function effectively 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-Isocyanatopropylmethyldiethoxysilane
Synonyms	γ-Isocyanatopropyltriethoxysilane, 3-(Triethoxysilyl)propyl isocyanate
Boiling Point	235.0°C (Predicted)
Density	0.94 g/cm³ (Predicted)
Flash Point	65°C
Refractive Index (n²⁰/D)	N / A
Solubility	Reacts with water; soluble in organic solvents
Applications	Adhesion Promoter: Enhances adhesion between organic polymers and inorganic substrates, making it valuable in the formulation of adhesives, sealants, and coatings. Surface Modifier: Improves surface properties of materials, thereby enhancing durability and performance. Chemical Intermediate: Serves as a precursor in the synthesis of various functionalized silanes and silicon-based materials.
Safety and Handling	Hazard Classification: Classified as hazardous; appropriate precautions are necessary. Safety Measures: Avoid direct contact with skin and eyes; use suitable protective equipment. Ensure adequate ventilation to prevent inhalation of vapors. Store in a cool, dry place away from moisture and incompatible substances.
Packaging	Our standard packing is net 25kg / 200 kg drums / 1000kg/IBC，or according to your requirements.
Sample	Provided for free
Inventory items	3 tons
Price	Please contact us to get the new price.

Packaging Specifications

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3-Isocyanatopropylmethyldiethoxysilane: Guide

3-Isocyanatopropylmethyldiethoxysilane (CAS 33491-28-0) is a high-performance organosilicon compound widely used as a coupling agent and surface modifier in coatings, adhesives, sealants, and composite materials. Its reactive isocyanate group enables strong covalent bonding with organic polymers, while the hydrolyzable silane moiety enhances adhesion to inorganic surfaces, improving mechanical strength, durability, and moisture resistance. This makes it ideal for enhancing performance in automotive, construction, and electronic applications. Due to its high reactivity, proper handling, storage, and protective measures are essential to prevent hydrolysis and ensure safe, efficient application.