Description

4,4-Diethyl-3,5-Dioxa-4-Silaheptane-1,7-Diamine is a specialized organosilicon diamine compound, serving as a key building block in advanced material synthesis. Its bifunctional structure, featuring both amine and siloxane groups, provides unique reactivity and compatibility for creating high-performance polymers and surface modifiers. This chemical is essential for R&D and production in industries such as specialty polymers, adhesives, and surface coatings, where it imparts tailored properties like flexibility, adhesion, and thermal stability.

Application

• Silicone Polymer Modification: Acts as a chain extender or crosslinker in the synthesis of polyamides, polyimides, and polyurethanes to incorporate siloxane segments for enhanced flexibility and thermal-oxidative stability.
• Adhesive & Sealant Formulations: Used as an adhesion promoter and curing agent in high-performance silicone and hybrid polymer adhesives and sealants.
• Surface Treatment & Coupling Agent: Functions as a silane coupling agent to improve the bonding between organic polymers and inorganic surfaces like glass, metals, or minerals.
• Specialty Resin Synthesis: A precursor for creating novel epoxy and other thermosetting resins with improved moisture resistance and mechanical properties.
• Pharmaceutical & Agro-Intermediate: Serves as a versatile intermediate in the synthesis of more complex molecules for pharmaceutical and agrochemical applications.
• Lubricant & Grease Additive: Imparts desirable properties such as high-temperature stability and anti-wear characteristics in specialty lubricant formulations.

Basic Information

Product Name	4,4-Diethyl-3,5-Dioxa-4-Silaheptane-1,7-Diamine
CAS No.	20467-07-6
Molecular Formula	C9H24N2O2Si
Molecular Weight	220.39 g/mol
Synonyms	N1,N7-Bis(3-aminopropyl)tetramethyldisiloxane; 1,7-Diamino-4,4-diethyl-3,5-dioxa-4-silaheptane; Bis(3-aminopropyl)tetramethyldisiloxane; α,ω-Bis(3-aminopropyl)polydimethylsiloxane (short chain); APTMDS; Diamino terminated polydimethylsiloxane; Siloxane diamine; Aminoalkyl functional siloxane
EINECS	Contact for details

Quality Control

Our 4,4-Diethyl-3,5-Dioxa-4-Silaheptane-1,7-Diamine is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance and regulatory compliance needs.

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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC or Titration)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.430 - 1.440
Density (20°C)	0.92 - 0.96 g/mL

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