Description

Hydroxytrimethylsilane is a versatile organosilicon compound, also known as trimethylsilanol, with the CAS number 1066-40-6. It serves as a fundamental building block and intermediate in the synthesis of more complex siloxanes and silicone polymers. This chemical is essential for manufacturers in the silicone, pharmaceutical, and specialty materials industries seeking to modify surface properties or create custom silane coupling agents.

Application

• Silicone Intermediate: A key precursor in the production of polydimethylsiloxanes (PDMS) and other silicone fluids, resins, and elastomers.
• Surface Modification Agent: Used to impart hydrophobicity to surfaces of glass, silica, metals, and other inorganic materials.
• Pharmaceutical Synthesis: Employed as a protecting group for alcohols and silanizing agent in the synthesis of active pharmaceutical ingredients (APIs).
• Silane Coupling Agent Production: Acts as a starting material for manufacturing various functional organosilanes used in adhesives, sealants, and composite materials.
• Laboratory Reagent: Utilized in research and development for organic synthesis and material science applications.
• Adhesive & Sealant Formulations: Contributes to the formulation of high-performance silicone-based adhesives and sealants.

Basic Information

Product Name	Hydroxytrimethylsilane
CAS No.	1066-40-6
Molecular Formula	C3H10OSi
Molecular Weight	90.20 g/mol
Synonyms	Trimethylsilanol; (CH3)3SiOH; TMS-OH; Trimethylhydroxysilane; Silanol, trimethyl-; Hydroxy(trimethyl)silane; Oxybis(trimethylsilane) (related); 1,1,1-Trimethylsilanetriol (tautomer)
EINECS	213-929-4

Quality Control

Our Hydroxytrimethylsilane is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including assay by GC or titration and impurity profiling, to ensure it meets the high-purity requirements of our industrial and research partners. A Certificate of Analysis (COA) detailing specific results is provided with every shipment to guarantee traceability and compliance with your specifications.

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 and highly volatile nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent moisture absorption and degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Chloride (as Cl)	≤ 0.01%

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