Description

Tetramethylammoniumsilicate is an organosilicon compound that serves as a versatile source of both tetramethylammonium cations and soluble silicate anions. This unique dual functionality makes it a valuable precursor and catalyst in advanced material synthesis and surface modification processes. It is primarily utilized by industries focused on microelectronics, specialty glass, and high-performance coatings, where precise control over silicon deposition and surface properties is critical.

Application

• Semiconductor Manufacturing: As a spin-on dopant (SOD) source for silicon dioxide (SiO₂) films and as a precursor in chemical vapor deposition (CVD) processes.
• Specialty Glass & Ceramics: A sol-gel processing agent for producing high-purity silica glasses, thin films, and ceramic composites with tailored porosity.
• Catalysis & Chemical Synthesis: Acts as a basic catalyst or templating agent in the synthesis of zeolites and other microporous materials.
• Surface Treatment & Adhesion Promotion: Used to modify surface energy and improve adhesion between inorganic substrates and organic polymers or coatings.
• Analytical Chemistry: Employed as a reagent in specific silicate analysis and as a standard in quantitative silicon determination.
• Research & Development: A key starting material in academic and industrial R&D for novel silicon-based polymers and hybrid organic-inorganic materials.

Basic Information

Product Name	Tetramethylammoniumsilicate
CAS No.	56982-91-3
Molecular Formula	C4H12NO3Si (commonly represented in solution as (CH3)4N+ and SiO32-)
Molecular Weight	150.23 g/mol (for C4H12NO3Si)
Synonyms	Tetramethylammonium metasilicate; N,N,N-Trimethylmethanaminium silicate; TMA silicate; Silicic acid, tetramethylammonium salt; Tetramethylammonium orthosilicate (in various hydration states); (CH3)4N-SiO3; TMA-Si
EINECS	Contact for details

Quality Control

Our Tetramethylammoniumsilicate is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Production adheres to relevant ISO guidelines, and material specifications are designed to meet the stringent requirements of the electronics and advanced materials industries. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profiles, and solution parameters is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be kept under an inert atmosphere if in solid form to prevent decomposition or absorption of CO2. Keep away from strong acids.

Specification

Item	Specification
Appearance (Solution)	Colorless to pale yellow clear liquid
Assay (as TMA-Silicate)	≥ 20% in aqueous solution (other concentrations available)
Identification (IR)	Conforms to standard
Silicon Content	Contact for details
pH (of solution)	11.0 - 13.0
Heavy Metals (as Pb)	< 10 ppm
Chloride (Cl)	< 50 ppm

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