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Silane USi-2312 – Methyl(glycidoxypropyl)diethoxysilane
Epoxy-Functional Ethoxysilane for Enhanced Adhesion, Strength & Durability
CAS No.: 2897-60-1
EINECS No.: 220-780-8
Molecular Weight: 248.39 g/mol
Synonyms:
3-(2,3-Epoxypropyloxy)propylmethyldiethoxysilane;
[3-(2,3-Epoxypropoxy)propyl]diethoxymethylsilane
Equivalent: Silquest® A-187 (Momentive); Z-6042 (Dow)Silane USi-2312 is a high-performance epoxy-functional organosilane featuring a reactive glycidyl (epoxy) group and two hydrolyzable ethoxy groups. It acts as a powerful coupling agent between organic polymers and inorganic substrates—delivering exceptional wet/dry adhesion, mechanical reinforcement, and long-term durability without yellowing.
🧪 Product Description
Chemical Formula: C₁₀H₂₂O₄Si
Chemical Structure:
![Structure: CH₂(O)CH–CH₂–O–(CH₂)₃–Si(CH₃)(OC₂H₅)₂]USi-2312 bridges the gap between inorganic materials (glass, metals, minerals) and organic matrices (epoxies, polyurethanes, acrylics). Its ethoxy groups offer slower, more controllable hydrolysis than methoxy analogs—ideal for primer formulations and filler treatments requiring extended pot life and uniform surface coverage.
📊 Typical Technical Data
The following values are typical and not intended for specification. Please confirm with our technical team before finalizing product requirements.
Parameter Specification Appearance Colorless transparent liquid Specific Gravity (20°C) 0.973 – 0.983 g/cm³ Refractive Index (nD25) 1.4260 – 1.4360 Purity (GC, %) ≥ 97.0%
🏭 Key Applications
🔹 Universal Adhesion Promoter
- Dramatically improves bond strength on:
- Glass fibers
- Mineral fillers (e.g., silica, talc, CaCO₃)
- Aluminum, steel, and other metallic surfaces
- Effective in epoxy, polyurethane, acrylic, and unsaturated polyester systems
🔹 Mechanical Property Enhancement
- Boosts tensile strength while maintaining elongation at break
- Improves tear resistance and fatigue durability in composites and elastomers
🔹 Moisture Resistance & Aging Stability
- Forms hydrophobic interfacial layers that block water ingress
- Ensures performance consistency under humid, thermal, or UV aging conditions
- Non-yellowing — ideal for clear coatings and light-colored composites
🔹 Versatile Application Methods
- Can be applied via:
- Aqueous primers (diluted in acidified water, pH 4–5)
- Solvent-based coatings
- Direct addition to resin formulations (0.5–2.0 wt%)
- Treated surfaces should be dried thoroughly to promote silanol condensation and bonding
📦 Packaging
Available in industrial-grade containers:
- 20 L pail
- 200 L drum
- 1,000 L IBC tote
All packaging ensures moisture protection for optimal product stability.
⚠️ Safety & Storage
- Store in original unopened containers at or below 35°C
- Keep away from heat and open flame
- Shelf Life: 12 months from production date under recommended conditions
- Use appropriate PPE (gloves, goggles) and ensure adequate ventilation
- Consult the latest Safety Data Sheet (SDS) at www.usi-chemical.com or upon request
📞 Contact Us
Nanjing Union Silicon Chemical Co., Ltd.
Your Trusted Partner in High-Performance Silane Solutions- Headquarters:
Room 2002, Overseas Chinese Plaza, No.1 Daqiao North Road, Nanjing 210031, Jiangsu, P.R. China - Factory Address:
Dongcheng Guanli District, Gaizhou 115200, Liaoning, P.R. China - Tel: +86-25-5889 5266 / 5889 5699
- Fax: +86-25-5830 5349
- Website: www.usi-chemical.com
- Email: service@usichemical.com
- Dramatically improves bond strength on:
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