Description

1,3-Di-n-Octyltetramethyldisilazane is a high-purity organosilicon compound, specifically a disilazane derivative, valued for its role as a versatile silylating agent and surface modifier. Its primary commercial value lies in its ability to impart hydrophobic and oleophobic properties to inorganic surfaces, enhancing material performance. This chemical is essential for manufacturers in the advanced materials, electronics, and specialty chemical synthesis sectors seeking to modify surface energy and reactivity.

Application

• Surface Treatment for Fillers and Pigments: Used to hydrophobically treat silica, alumina, and other mineral fillers to improve dispersion in polymer matrices and enhance composite properties.
• Water Repellent Coatings: A key intermediate in formulating durable water-repellent coatings for textiles, construction materials, and optical components.
• Electronics and Semiconductor Processing: Employed as a surface passivation agent and adhesion promoter in microelectronics fabrication.
• Pharmaceutical Intermediate: Serves as a protecting group agent in the synthesis of complex organic molecules and active pharmaceutical ingredients (APIs).
• Lubricant and Grease Additive: Functions as a performance additive to improve the thermal stability and lubricity of specialty greases and oils.
• Silicone Rubber Modification: Acts as a crosslinking agent or modifier to tailor the properties of silicone elastomers.

Basic Information

Product Name	1,3-Di-n-Octyltetramethyldisilazane
CAS No.	69519-51-3
Molecular Formula	C₂₀H₄₇NSi₂
Molecular Weight	357.78 g/mol
Synonyms	Bis(octyl)tetramethyldisilazane; Di-n-Octyltetramethyldisilazane; 1,3-Dioctyl-1,1,3,3-tetramethyldisilazane; Octyltetramethyldisilazane; Disilazane, 1,3-dioctyl-1,1,3,3-tetramethyl-; N-(Di-n-octylsilyl)-N-(trimethylsilyl)amine; Tetramethyl-di-n-octyldisilazane
EINECS	Contact for details

Quality Control

Our 1,3-Di-n-Octyltetramethyldisilazane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and Karl Fischer titration, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance protocols.

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 nature, the container must be kept tightly sealed to exclude moisture. Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20/D)	1.450 - 1.455
Density (20°C)	0.83 - 0.86 g/mL

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