1,2-Dimethyl-1,1,2,2-tetraphenyldisilane
1,2-Dimethyl-1,1,2,2-tetraphenyldisilane (CAS: 1172-76-5) is an organosilicon compound with the linear formula (SiCH3(C6H5)2)2 and a molecular weight of 394.66 g/mol. It is utilised in advanced materials science and microelectronics. This disilane derivative serves as a precursor in chemical synthesis, particularly for organosilicon compounds and vapor deposition processes.
- Synonyms
- 2,2-tetraphenyldisilane

Chemical Synthesis
This compound acts as a valuable building block in organic and organometallic synthesis, enabling the formation of complex silicon-containing molecules.
Vapor Deposition Precursor
It is employed as a precursor in Chemical Vapor Deposition (CVD) and Atomic Layer Deposition (ALD) processes for creating thin films in microelectronics and materials science applications.
Materials Science
The unique structure of this disilane lends itself to research and development in novel materials with specific electronic or optical properties.
Micro/Nanoelectronics
Used in the fabrication of semiconductor devices and nanostructures, leveraging its properties for thin-film deposition and material modification.
| Molecular weight | 394.66 |
|---|---|
| Linear formula | (SiCH3(C6H5)2)2 |
| Assay | 97% |
| Melting point | 140-144 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1,2-Dimethyl-1,1,2,2-tetraphenyldisilane used for?
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1,2-Dimethyl-1,1,2,2-tetraphenyldisilane is used as a precursor in chemical synthesis, particularly for organosilicon compounds, and in materials science and micro/nanoelectronics applications, including CVD and ALD processes.
What is the CAS number and formula for 1,2-Dimethyl-1,1,2,2-tetraphenyldisilane?
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The CAS number is 1172-76-5 and the linear formula is (SiCH3(C6H5)2)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1,2-Dimethyl-1,1,2,2-tetraphenyldisilane with an assay of 97%. TSS does not represent this product as USP, BP, or EP grade.
What are the safety and handling precautions for this chemical?
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This compound is classified as an irritant (H315, H319, H335). Handle with appropriate personal protective equipment, including eyeshields, gloves, and a dust mask type N95 (US). Ensure adequate ventilation. Avoid contact with skin, eyes, and clothing.
How is 1,2-Dimethyl-1,1,2,2-tetraphenyldisilane typically packed and shipped?
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Tech Serve Solutions carefully packs and exports chemicals globally, adhering to all relevant shipping regulations to ensure safe and secure transit.
How can I request a sample or quote for 1,2-Dimethyl-1,1,2,2-tetraphenyldisilane?
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To request a sample or obtain a quote, please contact our sales team via the website or by telephone, providing the product name and CAS number.
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