Description

5,5-Dimethyl-3-[3-(Trimethoxysilyl)Propyl]-2,4-Imidazolidinedione is a specialized organosilane derivative that combines the reactivity of a trimethoxysilyl group with the structural features of a hydantoin ring. This unique bifunctional nature makes it a highly effective coupling agent and reactive intermediate for creating durable, high-performance materials. It is primarily sought after by manufacturers in the polymer, coatings, and adhesive industries seeking to enhance material compatibility, adhesion, and surface properties. The compound is supplied under strict quality control to ensure batch-to-batch consistency for demanding industrial applications.

Application

• Silane Coupling Agent: Used to improve the adhesion between inorganic materials (like glass, minerals, metals) and organic polymers in composites and filled systems.
• Surface Modification: Imparts specific functional groups to silica, glass fibers, and other fillers to enhance dispersion and interfacial bonding in polymer matrices.
• Adhesive & Sealant Formulations: Acts as an adhesion promoter and crosslinking agent, improving moisture resistance and bond strength in high-performance sealants and adhesives.
• Coatings & Paints: Incorporated to enhance coating adhesion to difficult substrates, corrosion resistance, and overall durability.
• Rubber & Tire Industry: Used as a coupling agent in silica-filled rubber compounds to reduce rolling resistance and improve mechanical properties.
• Pharmaceutical & Agrochemical Intermediates: Serves as a key synthetic building block for more complex molecules due to its reactive hydantoin and silane functionalities.
• Crosslinking Agent: For specialty polymers where the hydantoin ring can participate in further chemical reactions to form network structures.

Basic Information

Product Name	5,5-Dimethyl-3-[3-(Trimethoxysilyl)Propyl]-2,4-Imidazolidinedione
CAS No.	71550-68-0
Molecular Formula	C11H22N2O5Si
Molecular Weight	290.39 g/mol
Synonyms	3-(3-Trimethoxysilylpropyl)-5,5-dimethylhydantoin; N-(3-Trimethoxysilylpropyl)-5,5-dimethylhydantoin; 5,5-Dimethyl-3-(3-trimethoxysilylpropyl)hydantoin; Hydantoin, 5,5-dimethyl-3-[3-(trimethoxysilyl)propyl]-; SIH 6110.0 (Gelest); SIT 7918.0 (Gelest); SID 4540.0 (Gelest); Trimethoxysilylpropyl dimethylhydantoin
EINECS	Contact for details

Quality Control

Our production of 5,5-Dimethyl-3-[3-(Trimethoxysilyl)Propyl]-2,4-Imidazolidinedione adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including assay (HPLC), identity confirmation (IR, NMR), and impurity profiling, to ensure it meets precise specifications. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and test results is provided with each shipment to guarantee traceability and compliance with your quality requirements.

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 compound is hygroscopic (moisture-sensitive); containers must be kept tightly sealed and under a dry inert atmosphere (e.g., nitrogen) for long-term storage to prevent hydrolysis of the trimethoxysilyl groups. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Refractive Index (n20D)	1.450 - 1.460
Density (20°C)	1.10 - 1.20 g/cm³
Water Content (Karl Fischer)	≤ 0.5%

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