Description

1-[3-(Trimethoxysilyl)Propyl]Urea is a bifunctional organosilane coupling agent that combines a reactive urea group with a hydrolyzable trimethoxysilyl group. This unique structure makes it a critical component for enhancing adhesion and compatibility between organic polymers and inorganic substrates. It is primarily utilized by formulators and manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced composite materials.

Application

• As a coupling agent and adhesion promoter in epoxy, polyurethane, and acrylic-based coatings and adhesives.
• To improve the mechanical properties and moisture resistance of mineral-filled composites and fiber-reinforced plastics.
• For surface modification of glass, silica, and other inorganic fillers to enhance their dispersion in polymer matrices.
• In the formulation of primers and sealants for improved bonding to challenging substrates like metals, glass, and concrete.
• As a crosslinking agent or co-monomer in specialty silicone-modified organic polymers.
• In the production of moisture-curable systems where the silane functionality provides in-situ curing mechanisms.

Basic Information

Product Name	1-[3-(Trimethoxysilyl)Propyl]Urea
CAS No.	23843-64-3
Molecular Formula	C7H18N2O5Si
Molecular Weight	238.32 g/mol
Synonyms	N-[3-(Trimethoxysilyl)propyl]urea; Ureidopropyltrimethoxysilane; 3-Ureidopropyltrimethoxysilane; γ-Ureidopropyltrimethoxysilane; Silane A-1160; UPTMS; 1-(3-Trimethoxysilylpropyl)urea
EINECS	Contact for details

Quality Control

Our production of 1-[3-(Trimethoxysilyl)Propyl]Urea adheres to stringent quality management protocols. Each batch undergoes comprehensive analysis to ensure consistent purity, reactivity, and performance. Certificates of Analysis (COA) detailing key parameters such as assay, identity, and impurity profiles are provided and available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product performance. Recommended storage temperature is between 15°C and 25°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC or HPLC)	≥ 97.0%
Refractive Index (n20D)	1.420 - 1.430
Density (g/mL, 25°C)	1.15 - 1.18

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.