Description

1,3-Bis(3-Aminopropyl)Tetramethyldisiloxane is a versatile bifunctional organosilicon compound featuring both siloxane linkages and primary amine groups. This unique structure makes it a valuable flexible spacer and coupling agent in advanced material synthesis. It is primarily used by formulators and researchers in the silicone, polymer, and coatings industries to introduce amine functionality, improve adhesion, and modify surface properties.

Application

• Silicone Modifier & Crosslinker: Used as a chain extender or crosslinking agent in silicone polymers (silicone oils, elastomers, resins) to introduce amine functionality and improve mechanical properties.
• Adhesion Promoter: Enhances the adhesion of silicone-based sealants, coatings, and adhesives to various substrates, including metals, glass, and plastics.
• Polymer Synthesis Intermediate: Serves as a key monomer or building block for synthesizing polyamides, polyimides, and other specialty polymers with siloxane segments for flexibility and thermal stability.
• Surface Treatment Agent: Applied to modify surface energy and create amine-functionalized surfaces for further chemical grafting or to improve biocompatibility.
• Epoxy & Polyurethane Curing Agent: Acts as a curing agent or hardener for epoxy resins and polyurethanes, contributing to flexibility and impact resistance in the final cured material.
• Pharmaceutical & Cosmetic Ingredient: Employed in the synthesis of siloxane-based compounds for controlled drug delivery systems and as a conditioning agent in personal care products.

Basic Information

Product Name	1,3-Bis(3-Aminopropyl)Tetramethyldisiloxane
CAS No.	2469-55-8
Molecular Formula	C10H28N2OSi2
Molecular Weight	248.51 g/mol
Synonyms	Bis(3-aminopropyl)tetramethyldisiloxane; 1,3-Bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane; 3,3'-(Tetramethyldisiloxane-1,3-diyl)di(propan-1-amine); APTMDS; Amino Silicone Fluid ASF-110; Diaminopropyltetramethyldisiloxane; DMS-A12; Amino-terminated polydimethylsiloxane (low MW)
EINECS	219-574-1

Quality Control

Our 1,3-Bis(3-Aminopropyl)Tetramethyldisiloxane is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is tested against comprehensive specifications. Certificates of Analysis (COA) detailing purity, identity, and key physical parameters are provided and available upon request to support your quality assurance and regulatory 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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent degradation from moisture and carbon dioxide.

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 (n20/D)	1.440 - 1.445
Density (g/mL, 25°C)	0.90 - 0.92

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