Description

Diphenyldiethoxysilane (CAS No. 2553-19-7) is a high-purity organosilicon compound with the molecular formula C₁₆H₂₀O₂Si and IUPAC name diethoxy(diphenyl)silane. This versatile silane reagent features two ethoxy groups and two phenyl groups bonded to a central silicon atom, making it an excellent precursor for surface modification, polymer synthesis, and sol-gel chemistry. With a molecular weight of 272.42 g/mol, it is a clear, colorless to pale yellow liquid under standard conditions. Ideal for research and industrial applications, our Diphenyldiethoxysilane is rigorously tested to ensure ≥98% purity (GC) and is packaged under inert gas to maintain stability. Suitable for use as a coupling agent, crosslinker, or hydrophobic coating component in advanced material science, electronics, and nanotechnology applications.

Properties

• CAS Number: 2553-19-7
• Complexity: 219
• IUPAC Name: diethoxy(diphenyl)silane
• InChI: InChI=1S/C16H20O2Si/c1-3-17-19(18-4-2,15-11-7-5-8-12-15)16-13-9-6-10-14-16/h5-14H,3-4H2,1-2H3
• InChI Key: ZZNQQQWFKKTOSD-UHFFFAOYSA-N
• Exact Mass: 272.123256411
• Molecular Formula: C16H20O2Si
• Molecular Weight: 272.41
• SMILES: CCO[Si](C1=CC=CC=C1)(C2=CC=CC=C2)OCC
• Topological: 18.5
• Monoisotopic Mass: 272.123256411
• Physical Description: Liquid;
• Vapor Pressure: 0.0000472 [mmHg]
• Synonyms: Diethoxydiphenylsilane, 2553-19-7, Diphenyldiethoxysilane, Silane, diethoxydiphenyl-, 2L8R5QPV9A, Benzene, 1,1′-(diethoxysilylene)bis-, EINECS 219-860-5, NSC 77127, NSC-77127, DTXSID4062519, KBE 202, KEB 202, KBM 202LS5990, TSL-8177, LS-5990, 1,1′-(DIETHOXYSILYLENE)BIS(BENZENE), Silane, diethoxydiphenyl, DTXCID9037325, Benzene, 1,1′(diethoxysilylene)bis, 219-860-5, diethoxy(diphenyl)silane, MFCD00015126, 155684-44-9, NSC77127, diethoxy-diphenyl-silane, diethoxy-di(phenyl)silane, UNII-2L8R5QPV9A, Diethoxydiphenylsilane, 97%, SCHEMBL34937, SCHEMBL15864042, ZZNQQQWFKKTOSD-UHFFFAOYSA-, AC8151, CD6000, AKOS008901149, AS-57725, SY041887, DB-029678, D3067, NS00045807, S07825, InChI=1/C16H20O2Si/c1-3-17-19(18-4-2,15-11-7-5-8-12-15)16-13-9-6-10-14-16/h5-14H,3-4H2,1-2H3

Application

Diphenyldiethoxysilane is widely used as a surface modifier to enhance the adhesion and hydrophobicity of glass, metals, and polymers. In sol-gel processes, it serves as a key precursor for synthesizing hybrid organic-inorganic materials with tailored mechanical and thermal properties. The compound is also employed in the production of silicone resins and as a crosslinking agent in silicone rubber formulations.

Safety and Hazards

GHS Hazard Statements

• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (97.7%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)
• STOT SE 3 (97.7%)

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