Silane Concrete Sealer (Isobutyltriethoxysilane)
CAS Number: 5578-64-3
Isobutyltriethoxysilane is a penetrating silane sealer that reacts with concrete substrate to form a covalently bonded, water-repellent organosilicon network within the pore structure. It provides deep penetration (up to 20 mm), lasting hydrophobic protection against chloride ingress, water absorption, and carbonation for 10+ years. It is widely used for post-construction protection of bridges, parking structures, and coastal concrete.
Technical Specifications
| pH | 5.0-7.0 |
| appearance | Clear colorless liquid |
| purity (%) | 98±1 |
| specific gravity | 0.87–0.89 |
| active silane content (%) | ≥96 |
Applications
- Bridge decks, piers, and abutments
- Parking garages and multi-story car parks
- Coastal and marine concrete infrastructure
- Tunnels and underground concrete structures
- Historical concrete and masonry restoration
Key Features
- Deep penetration up to 20 mm for long-lasting protection
- Chemically bonds to concrete for durable, non-film-forming protection
- Reduces chloride ingress by >90%, significantly extending structure life
- Vapor-permeable allows concrete to breathe while repelling water
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