7803-62-5 | Silane (SiH₄)

Chemical type

• Organosilicon compound (silicone-based)

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• Silane coupling agent

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Key properties

• Specific gravity 0.88 g/cm³, viscosity 8 cps, highly hydrophobic (contact angles 137-148°), pore-lining effect expelling water during drying, reduces salt buildup and carbonation susceptibility, synergistic with nanoparticles for microstructural densification

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• Traditionally used to create a chemical bond with silica-based (glass) ceramics.
• Unstable in acidic environments (like universal adhesives) where it can undergo dehydration and self-condensation, losing reactivity.
• Can dilute the concentration of 10-MDP if present in high amounts (>5-10 wt%), potentially interfering with its function.

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• Base resin for nano-modified hydrophobic coatings; applied in three layers to mitigate fluid and ion ingress in concrete under combined chloride, carbonation, and cyclic exposures; effective for salt-frost scaling resistance

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• Applied to glass-matrix ceramics to establish chemical adhesion to silica after etching.
• Added to universal adhesives to broaden their applicability to various substrates, including glass ceramics.
• In study, at low concentrations (<0.5 wt%) in "universal adhesives plus," it did not significantly affect zirconia bonding.

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Classification by use

• Hydrophobic pore liners for concrete protection
• Surface treatments for de-icer resistance in cold regions

A trustworthy factory and manufacturer

1. [Cite:1] Performance of nano-modified silica, alumina, and titania concrete coatings under combined cyclic environments, carbonation, and calcium chloride, Case Studies in Construction Materials, Volume 23, December 2025, e05612
2. [Cite:2] Influence of silane and 10-MDP in universal adhesives on bonding efficacy and chemical interaction with zirconia, The Journal of Prosthetic Dentistry, 9 March 2026