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Silane USi-8037 – Phenyltrichlorosilane
High-Reactivity Aryl Chlorosilane for Thermal-Stable Silicones & Hydrophobic Intermediates
CAS No.: 98-13-5
EINECS No.: 202-640-8
Molecular Weight: 211.55 g/mol
Chemical Name:
Trichlorophenylsilane
Synonyms:
PhenyltrichlorosilaneSilane USi-8037 is a highly reactive mono-phenyl trichlorosilane that serves as a foundational building block for phenyl-modified silicones, hydrophobic coupling agents, and thermal-stability enhancers. Its single phenyl group imparts exceptional heat resistance and UV stability, while its three chlorine atoms enable rapid, versatile functionalization—making it indispensable in high-performance sealants, coatings, and specialty intermediates.
🧪 Product Description
Chemical Structure:
C₆H₅–SiCl₃USi-8037 combines the benefits of aromatic functionality with high chlorosilane reactivity:
- The phenyl ring enhances thermal oxidative stability (>300°C), radiation resistance, and compatibility with organic polymers
- The three hydrolyzable Cl groups allow for fast condensation or alcoholysis to form phenyltrialkoxysilanes, resins, or crosslinked networks
- Often used as a co-monomer with other silanes (e.g., methyltrichloro-, vinyltrichloro-) to tailor silicone properties
- Can act as a hydrophobic additive or adhesion promoter in formulations targeting glass, metals, and minerals
✅ Key Advantage: Delivers maximum phenyl content per silicon atom among mono-phenyl chlorosilanes—ideal for applications demanding extreme durability and chemical tunability.
📊 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) 1.315 – 1.331 g/cm³ Refractive Index (nD20) 1.5220 – 1.5240 Purity (GC, %) ≥ 95.0%
🏭 Key Applications
🔹 Phenyl Silicone Synthesis
- Primary monomer for producing:
- Phenylmethyl silicones
- Phenyl resins and MQ resins
- Phenyl-modified fluids and gums
- Resulting materials exhibit superior:
- Thermal stability (for aerospace, LED encapsulants)
- Low-temperature flexibility
- Radiation & UV resistance (nuclear, outdoor electronics)
🔹 Hydrophobic Surface Treatment
- Used directly or as an intermediate to create water-repellent coatings on:
- Glass, ceramics, metals, and mineral surfaces
- Provides durable, chemically bonded hydrophobicity vs. physical adsorption
🔹 Coupling Agent Enhancement
- Blended into amino- or epoxy-silane systems to:
- Improve thermal stability of the coupling layer
- Enhance adhesion durability under heat/humidity stress
- Promote bonding between resins with amino-reactive groups and inorganic substrates
🔹 Waterborne System Stabilization
- Its lower alkoxy functionality (vs. tetraalkoxysilanes) reduces hydrolysis rate—offering higher stability in aqueous formulations while still enabling crosslinking over time
⚠️ Safety & Storage
- Corrosive and moisture-sensitive—reacts violently with water, releasing HCl gas
- Store in original unopened containers at or below 35°C
- Keep away from heat, open flame, and humidity
- Shelf Life: 12 months from production date
- Use in a fume hood with full PPE: chemical goggles, face shield, acid-resistant gloves
- Consult the latest Safety Data Sheet (SDS) at www.usi-chemical.com or upon request
📦 Packaging
Available in industrial-grade, moisture-barrier containers:
- 25 L pail
- 250 kg drum
- 1000 L IBC tote
(Note: Containers are nitrogen-purged and sealed to prevent hydrolysis during storage)
📞 Contact Us
Nanjing Union Silicon Chemical Co., Ltd.
Your Global Partner for High-Performance Aryl Silanes- 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 - Website: www.usi-chemical.com
- Email: inquiry@usichemical.com
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