Description

Decyl-Trimethyl-Silane is a versatile organosilicon compound, specifically a long-chain alkylsilane, with the CAS registry number 5112-85-6. It serves as a critical hydrophobic agent and surface modifier, providing excellent water repellency and compatibility with organic matrices. This chemical is essential for formulators and manufacturers in the coatings, sealants, and specialty chemical industries seeking to enhance material performance.

Application

• As a hydrophobic agent and water repellent in construction materials, including concrete and stone sealers.
• Key surface modifying agent for inorganic fillers (e.g., silica, minerals) to improve dispersion in polymer composites.
• Used as an intermediate in the synthesis of more complex silicone-based surfactants and additives.
• Imparts release properties and lubricity in mold-making applications and industrial coatings.
• Functions as a coupling agent to enhance adhesion between organic polymers and inorganic substrates.
• Employed in the formulation of specialty coatings for automotive, aerospace, and marine industries for corrosion protection.

Basic Information

Product Name	Decyl-Trimethyl-Silane
CAS No.	5112-85-6
Molecular Formula	C₁₃H₃₀Si
Molecular Weight	214.47 g/mol
Synonyms	Decyltrimethylsilane; 1-Decyltrimethylsilane; n-Decyltrimethylsilane; Trimethyldecylsilane; Silane, decyltrimethyl-; Decyl(trimethyl)silane; TMS-C10; n-C10H21Si(CH3)3
EINECS	225-848-8

Quality Control

Our Decyl-Trimethyl-Silane is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatography (GC/HPLC) and spectroscopic methods, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided to guarantee compliance with your specific application 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation. Keep away from strong bases and incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	0.78 - 0.80 g/mL
Refractive Index (n20/D)	1.428 - 1.432

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