Manta TMOS Tetramethyl orthosilicate

Manta TMOS Tetramethyl orthosilicate

Product Code: Manta TMOS

Chemical Name Tetramethyl orthosilicate
CAS Number 681-84-5
Molecular Formula C4H12O4Si
Product Form Liquid
Synonyms Tetramethoxysilane

Technical Specifications

PARAMETER VALUE / RANGE
Appearance Colorless transparent liquid
Molecular weight: 152.22
Boiling point at 760mmHg Boiling point at 760mmHg
Flash point, Closed cup 26℃
Density (ρ25℃,g/cm³) 1.023
Refractive Index (n25/D) 1.3670-1.3800
Purity (%) 98min

Product Description

Manta TMOS is a colorless liquid utilized primarily as a source of high-purity silicon dioxide (SiO2). Due to its small molecular size and high reactivity, it hydrolyzes significantly faster than Tetraethoxysilane (TEOS), making it the preferred precursor for precision sol-gel processes, thin-film coatings, and advanced chemical synthesis.

When fully hydrolyzed, Manta TMOS yields approximately 39.5% silica by weight, providing a dense silica-gel binder that enhances the structural integrity and chemical resistance of various substrates.

It is equivalent to industry standards such as Momentive Silquest TMOS and Evonik Dynasylan M.

Features

  1. Rapid Hydrolysis: Offers significantly faster reaction kinetics compared to TEOS, enabling shorter processing times in sol-gel applications.
  2. High Silica Yield: Provides a high concentration of inorganic silicate binder for reinforcement.
  3. Optical Clarity: Forms extremely transparent, hard silica films ideal for optical and electronic coatings.
  4. Inorganic Binder: Creates a robust SiO2 matrix that is resistant to high temperatures and chemical degradation.

Applications

  1. Advanced Sol-Gel Process

Manta TMOS is the premier starting material for the sol-gel production of high-purity silica gels, aerogels, and specialty glasses. It allows for the synthesis of complex organic-inorganic hybrid materials at room temperature.

  1. Optical & Scratch-Resistant Coatings

Used in the treatment of glass and plastic lenses to provide a hard, scratch-resistant surface finish. Its ability to form a dense silica-gel binder makes it ideal for anti-reflective (AR) and protective coatings in precision optics.

  1. Electronic & Semiconductor Materials

In the electronics industry, it serves as a precursor for chemical vapor deposition (CVD) to form dielectric layers and high-purity insulating films on semiconductor wafers.

  1. Silicone Rubber & Sealants

Acts as an efficient crosslinker in room-temperature vulcanized (RTV) silicone rubber systems. It also functions as an effective drying agent (moisture scavenger) in advanced sealing compositions to extend shelf life.

  1. Refractory Fillers & Pigment Treatment

Used as an inorganic binder for refractory materials, pigments, and ceramic fibers. It provides high-temperature stability and improves the mechanical strength of the composite by coating the surfaces with a protective silica layer.

  1. Chemical Intermediate

Serves as a fundamental building block for the synthesis of organofunctional silanes and specialty polysilicic acid esters.

Application Areas

Adhesives & Sealants Paints & Coatings Plastics & Masterbatches

Packaging & Handling

Packaging

In 20kg pail, 180kg drum and 900kg IBC

 

Safety and Storage

Extremely sensitive to moisture; ensure containers are hermetically sealed and purged with dry nitrogen after every use.

Safety Note: TMOS vapor is toxic and can cause severe eye damage. Handle with strict adherence to safety protocols (PPE and ventilation). When stored at or below 25 °C in the original unopened containers, this product has a usable life of 12 months from the date of production.

Support

Frequently Asked Questions

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From 1-gram laboratory trials to 1,000+ kg production runs. Full CoA, SDS, REACH/TSCA documentation included. Laboratory samples available within days.

+86 189 6107 1292 inquiry@mantasil.com