Product Code

AC-N813

n-Octyltrimethoxysilane

CAS Number
3069-40-7
EINECS
221-338-7

Description

Alkyl alkoxy silane used as a surface modifier and hydrophobing agent. The octyl chain is the industry reference for masonry water repellency: long enough for durable hydrophobicity, short enough to penetrate concrete. Releases methanol on hydrolysis; faster reacting.

Synonyms

Trimethoxyoctylsilanealkoxysilanesilane coupling agentadhesion promoterTrimethoxy(octyl)silaneTrimethoxycaprylylsilane1-(Trimethoxysilyl)octaneSilane, trimethoxyoctyl-C11H26O3Si

Cross-Reference

Comparable products from other manufacturers, for identification purposes only.

Z-6665 (Dow Corning)OCTMO (Evonik)

Key applications

  • Masonry, concrete and facade water repellency
  • Hydrophobic treatment of fillers and pigments
  • Powder flow and anti-caking
  • Glass fiber and mineral wool sizing
  • Adhesion primer on inorganic substrates

Characteristics

FamilyAlkoxy Silanes
FunctionalityAlkoxy
Molecular formulaC11H26O3Si
Molecular weight234.41 g/mol

Request