Description

1-Allyl-3-[3-(Triethoxysilyl)Propyl]Thiourea is a bifunctional organosilane coupling agent that combines a reactive thiourea group with a hydrolysable triethoxysilyl group. This unique structure makes it a critical component for creating strong, durable covalent bonds between inorganic substrates and organic polymers. It is essential for formulators and manufacturers seeking to enhance adhesion, mechanical properties, and chemical resistance in composite materials. This compound is primarily utilized in the advanced materials, coatings, and adhesive industries.

Application

• As a key adhesion promoter in silane-based primers for metals, glass, and minerals.
• Surface modification agent for silica, glass fibers, and other fillers to improve dispersion and bonding in polymer composites.
• Crosslinking and coupling agent in specialty elastomers and rubber compounds to enhance heat and chemical resistance.
• Intermediate in the synthesis of functionalized polymers and advanced organic-inorganic hybrid materials.
• Component in corrosion-resistant coatings and sealants for industrial applications.
• Used in the formulation of adhesives and sealants requiring excellent bonding to difficult substrates.

Basic Information

Product Name	1-Allyl-3-[3-(Triethoxysilyl)Propyl]Thiourea
CAS No.	42168-36-5
Molecular Formula	C13H28N2O3SSi
Molecular Weight	320.52 g/mol
Synonyms	3-(Triethoxysilyl)propyl allyl thiourea; Allyl[3-(triethoxysilyl)propyl]thiourea; N-Allyl-N'-[3-(triethoxysilyl)propyl]thiourea; 1-Allyl-3-(3-triethoxysilylpropyl)thiourea; Silane AY 43-031; Silane coupling agent KH 902; U-611; UCARSIL SI 902; A-902 silane; 3-(Triethoxypropylsilyl)-1-allylthiourea
EINECS	Contact for details

Quality Control

Our 1-Allyl-3-[3-(Triethoxysilyl)Propyl]Thiourea is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and performance consistency. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, refractive index, and specific gravity. Our quality commitment ensures material traceability and reliability for your critical formulations.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and hydrolysis of the silane groups. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Identification (IR)	Conforms
Assay (GC or HPLC)	≥ 95.0%
Refractive Index (n20/D)	1.460 - 1.470
Specific Gravity (20°C)	1.020 - 1.050

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