Alkyl Silanes
Hydrophobic treatment
At a glance
What it does
Alkyl / hydrophobic silanes — led by OCTEO (n-octyltriethoxysilane), the reference active for EN 1504-2 Class W hydrophobic impregnation of concrete, masonry and natural stone. Also used to render mineral fillers (silica, glass, mineral surfaces) water-repellent without forming a continuous film.
Also known as
n-octyltriethoxysilane · OCTEO · OTEO · CAS 2943-75-1 · standard EN 1504-2
Typical applications
- Hydrophobic impregnation of concrete, masonry and natural stone (EN 1504-2 Class W, OCTEO / OTES)
- Hydrophobic treatment of silica and mineral fillers
- Hydrophobic additive in dry-mix construction mortars
- Glass and ceramic surface treatment
Specification band
Industry-typical published bands. Producer-specific values on the COA issued per shipment.
Handling & packaging
- Moisture-sensitive · sealed drum storage
- Shelf life 12 months
- Some grades are dangerous goods · ADR documentation issued per grade
Documents on file per shipment
Serica execution notes
- Grade matched to the buyer's application — neat silane for filler treatment, emulsion for façade impregnation.
- DG declaration per shipment.
- Delivered pricing quoted to your plant; Incoterm and contracting structure confirmed per quotation.
Producers develop custom grades on request — specification band, particle size, purity, additive package.
Send us what you use today; we return a specification match and an indicative net delivered cost.
Prices are quoted as a net delivered cost to your plant. MOQs, lead-times and producer identities are confirmed per buyer.