Product Code

AC-TMOS

Tetramethoxysilane

CAS Number
681-84-5

Description

Tetrafunctional alkoxy silane (silicic acid ester). Acts as crosslinker in alkoxy-cure RTV systems, releasing methanol, and as the silica precursor in sol-gel chemistry, protective coatings and investment casting binders.

Synonyms

TMOSMethyl silicateTetramethyl orthosilicateTetramethoxysilane (TMOS)alkoxysilanemoisture cure crosslinkercrosslinking agentTetramethyl silicateMethyl orthosilicateSilicic acid, tetramethyl esterSi(OMe)4Si(OCH3)4C4H12O4Si

Key applications

  • Alkoxy (neutral) cure RTV systems
  • Sol-gel and ceramic coatings
  • Zinc-rich and heat-resistant paints
  • Foundry and investment casting binders
  • Silica precursor

Characteristics

FunctionalityAlkoxy
Cure by-productAlcohol
Typical useNeutral cure RTV, water repellents, sol-gel
Molecular formulaC4H12O4Si
Molecular weight152.22 g/mol

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