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3-Ureidopropyltriethoxysilane

Chemical Name:	3-Ureidopropyltriethoxysilane
Product Category:	CAS 23779-32-0 Amino Silane \| Silanes
Structural Formula:
CAS NO.:	23779-32-0
Molecular formula:	C10h24n2o4si
Molecular Weight:	264.40
EINECS:	245-876-7

3-Ureidopropyltriethoxysilane Description

3-Ureidopropyltriethoxysilane (CAS 23779-32-0) is a high-performance silane coupling agent used as an adhesion promoter and surface modifier. This colorless liquid, available as a 50% methanol solution, features a reactive organourea group and a hydrolyzable triethoxysilyl group, enabling strong bonding between inorganic materials (glass, metals, fillers) and organic polymers (thermosets, thermoplastics, elastomers).

Key Features & Benefits:

Enhances adhesion and durability in coatings, adhesives, and sealants.
Improves mechanical properties and water resistance in composites.
Soluble in alcohols, ketones, esters, and aromatic hydrocarbons for easy formulation.

Ideal for applications in plastics, rubbers, coatings, and composites, 3-Ureidopropyltriethoxysilane optimizes material performance and longevity.

Density(25°C),g / cm³	0.920-1.024
Boiling Point	305.1°C
Flash Point	138.3°C
Refractive Index(n_D²⁰)	1.4420-1.4440
Appearance	Colorless transparent liquid.
Dissolvability	Soluble in most aliphatic and aromatic solvents like alcohols, ketones, ether, benzene, etc.It is easy to be hydrolyzed under the affect of water.
Application	As a size constituent of finish for glass fiber/glass fabric composites As an additive to phenolic, furan and melamine resins for foundry resins and abrasives. As an additive for sealants and adhesives. As an additive and/or primer for paints and varnishes to improve adhesion to the substrate. Important product effects that can be achieved through the use of N- (Triethoxysilylpropyl) Urea are: Improved mechanical properties: E. G. Flexural strength, tensile strength, impact strength, modulus of elasticity. Improved resistance to moisture and corrosion. Higher temperature of deflection under load. CAS 23779-32-0 Silane also helps improve processing properties such as Increased filler content.
Hazardous	NOT
Transportation & Safety info	UN No.: UN 2735 Transport hazard class(es) : 8 Packing group: III
Packaging	Our standard packing is net 25kg / 200 kg drums / 1000kg/IBC，or according to your requirements.
Sample	Provided for free
Inventory items	4 tons
Price	Please contact us to get the new price.

Packaging Specifications

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3-Ureidopropyltriethoxysilane: Guide

3-Ureidopropyltriethoxysilane enhances adhesion, water resistance, and compatibility between inorganic materials (glass, minerals, fibers) and organic polymers (resins, rubbers, plastics).

Applications:

✔ Adhesives & Sealants – Improves bonding in epoxy, phenolic, polyurethane, and melamine resins.
✔ Coatings & Paints – Enhances durability, crosslinking, and dispersion.
✔ Rubbers & Plastics – Boosts performance in engineering materials.
✔ Glass & Fibers – Strengthens adhesion for glass fibers and abrasives.

Ideal for adhesives, coatings, plastics, and composite materials.