Description

N,n-Dioctyl-N'-Triethoxysilylpropylurea CAS NO 259727-10-1 is a specialized organosilicon urea derivative, engineered to function as a high-performance coupling agent and adhesion promoter. This compound is critical for enhancing the compatibility and interfacial bonding between inorganic materials and organic polymer matrices. It is primarily needed by manufacturers in the advanced composites, specialty adhesives, and high-performance coatings industries seeking to improve material durability and performance.

Application

• As a coupling agent in glass or mineral-filled polymer composites (e.g., polyamide, polypropylene) to improve mechanical strength and moisture resistance.
• As an adhesion promoter in primers and coatings for metals, glass, and plastics to ensure long-lasting bond integrity.
• For the surface modification of silica, alumina, and other fillers to enhance their dispersion and compatibility in silicone rubber and epoxy systems.
• In the formulation of sealants and adhesives to provide excellent water resistance and thermal stability.
• As a key intermediate in the synthesis of advanced silane-functionalized polymers for niche material science applications.

Basic Information

Product Name	N,n-Dioctyl-N'-Triethoxysilylpropylurea
CAS No.	259727-10-1
Molecular Formula	C24H52N2O4Si
Molecular Weight	460.77 g/mol
Synonyms	N,N-Dioctyl-N'-(3-triethoxysilylpropyl)urea; 3-(3-(Dioctylamino)-3-oxopropyl)triethoxysilane; Urea, N,N-dioctyl-N'-(3-(triethoxysilyl)propyl)-; Dioctyl(triethoxysilylpropyl)urea; Silane coupling agent urea derivative; Triethoxy[3-[[(dioctylamino)carbonyl]amino]propyl]silane; N-(Triethoxysilylpropyl)-N',N'-dioctylurea
EINECS	Contact for details

Quality Control

Our production of N,n-Dioctyl-N'-Triethoxysilylpropylurea adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including assay, identity confirmation, and impurity profiling, to ensure it meets precise specifications and consistent performance for industrial applications. Certificates of Analysis (COA) are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to exclude moisture. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC or HPLC)	≥ 95.0%
Density (at 20°C)	~0.92 g/mL
Refractive Index (n20D)	~1.440 - 1.450

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