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Silane USi-8027 – Diphenyldichlorosilane
High-Purity Aryl Chlorosilane for Catalyst & Specialty Silicone Synthesis
CAS No.: 80-10-4
EINECS No.: 201-251-0
Molecular Weight: 253.20 g/mol
Chemical Name:
Diphenyldichlorosilane
Synonyms:
DichlorodiphenylsilaneSilane USi-8027 is a high-purity diaryl dichlorosilane serving as a critical precursor in Ziegler-Natta polypropylene catalyst systems and the synthesis of high-performance aryl silicones. Its purity directly impacts catalyst activity, stereoselectivity, and final polymer properties—making stringent quality control essential. Supplied with ≥98% GC purity and low PCB content (<20 ppm), USi-8027 meets the demanding standards of modern petrochemical and advanced materials manufacturing.
🧪 Product Description
Chemical Structure:
(C₆H₅)₂SiCl₂USi-8027 is an aromatic chlorosilane valued for its:
- Two phenyl groups: Impart thermal stability, UV resistance, and low surface energy to derived silicones
- Two reactive chlorine atoms: Enable controlled hydrolysis/condensation or alcoholysis to form diphenyldialkoxysilanes (e.g., diphenyldimethoxysilane)—key internal donors in polypropylene catalysts
- High chemical purity: Essential for consistent catalyst performance; impurities can poison active sites or alter polymer microstructure
✅ Key Advantage: Serves as the foundational building block for producing high-efficiency catalyst donors and specialty phenyl-containing silicones used in extreme environments.
📊 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 Clear liquid with acrid HCl odor Specific Gravity (25°C) 1.22 g/cm³ Refractive Index (nD25) 1.5819 Purity (GC, %) ≥ 98.0% PCBs ≤ 20 ppm Analytical Note: Capillary GC is recommended for accurate purity and impurity profiling—packed columns may overestimate purity due to poor separation.
🏭 Key Applications
🔹 Polypropylene Catalyst Donor Synthesis
- Primary raw material for producing diphenyldimethoxysilane and related internal electron donors
- These donors regulate stereoregularity (isotacticity), hydrogen response, and morphology in MgCl₂-supported TiCl₄ Ziegler-Natta catalysts
- Directly influences polymer yield, melt flow index (MFI), and mechanical properties of PP
🔹 Aryl-Functional Silicone Production
- Used to synthesize:
- Diphenylsilanediol
- Methylphenyl silicone oils & resins
- Phenyl-modified polysiloxanes
- Resulting silicones exhibit superior:
- Thermal stability (>250°C)
- Radiation resistance
- Low-temperature flexibility
- Refractive index tunability (for optical applications)
🔹 Polymer & Material Science Research
- Building block for hybrid organic-inorganic polymers, liquid crystals, and functional surfaces
⚠️ Safety & Storage
- Corrosive liquid (UN1769)—handle with extreme care
- Store in tightly sealed containers under dry, inert atmosphere (e.g., N₂)
- Protect from moisture, sunlight, and rain—reacts violently with water, releasing HCl gas
- Shelf Life: 24 months; retest after this period for continued usability
- Use full PPE: chemical goggles, face shield, acid-resistant gloves, and fume hood
- Consult the latest Safety Data Sheet (SDS) at www.usi-chemical.com or upon request
📦 Packaging
- 230 kg steel drum (lined, moisture-proof)
(Note: Drums are specially designed to prevent moisture ingress and HCl corrosion)
📞 Contact Us
Nanjing Union Silicon Chemical Co., Ltd.
Your Trusted Source for High-Purity Aryl Chlorosilanes- 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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