Description

Triacetoxybutylsilane is a versatile organosilicon compound that serves as a key intermediate in the synthesis of advanced silicone polymers and surface-modifying agents. Its unique structure, featuring both reactive acetoxy groups and a butyl chain, makes it an effective coupling agent and hydrophobizing precursor. This product is essential for manufacturers in the coatings, sealants, and specialty chemical industries seeking to enhance material compatibility, adhesion, and water repellency in their formulations.

Application

• Crosslinking Agent in moisture-curable silicone sealants and RTV (Room Temperature Vulcanizing) rubbers.
• Surface Treatment for mineral fillers (e.g., silica, calcium carbonate) to improve dispersion in polymer matrices and increase hydrophobicity.
• Adhesion Promoter in primers and coatings for substrates like glass, metals, and concrete.
• Intermediate for the synthesis of other functional silanes and silicone oligomers.
• Hydrophobizing Agent in construction materials, such as waterproofing agents for concrete and masonry.
• Fiber Treatment for glass or mineral fibers to enhance bonding with resin in composite materials.

Basic Information

Product Name	Triacetoxybutylsilane
CAS No.	17984-98-4
Molecular Formula	C10H20O6Si
Molecular Weight	264.35 g/mol
Synonyms	Butyltriacetoxysilane; Triacetoxybutylsilane; Butylsilanetriol triacetate; Butyltriacetoxysilane; Silane, butyltriacetoxy-; n-Butyltriacetoxysilane; 1-Butyltriacetoxysilane; Triacetoxy-n-butylsilane
EINECS	241-975-5

Quality Control

Our Triacetoxybutylsilane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay by GC or titration and identification by FT-IR. A Certificate of Analysis (COA) detailing purity, identity, and key physical properties is provided with every shipment to guarantee compliance with your technical 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 material is hygroscopic (moisture-sensitive) and reacts with moisture to release acetic acid; therefore, containers must be kept tightly sealed and under a dry inert atmosphere (e.g., nitrogen) for long-term storage. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (at 20°C)	~1.10 g/cm³
Refractive Index (n20D)	~1.410 - 1.420

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