Diethoxydimethylsilane

The IUPAC name of this chemical is diethoxy(dimethyl)silane. With the CAS registry number 78-62-6, it is also named as Silane, diethoxydimethyl-. The product's categories are Aromatic Hydrocarbons (substituted) & Derivatives; Dialkoxysilanes; Functional Materials; Si (Classes of Silicon Compounds); Silane Coupling Agents; Silane Coupling Agents (Intermediates); Si-O Compounds; Alkoxy Silanes; Crosslinkers; Crosslinking Agents. It is colorless clear liquid which is toxic and flammable by fire, heat and oxidants. When heated to decomposition it emits acrid smoke and irritating fumes. So the storage environment should be well- ventilated, low-temperature and dry. Keep Diethoxydimethylsilane separate from oxidants and acids.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 0.61; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.61; (4)ACD/LogD (pH 7.4): 0.61; (5)ACD/BCF (pH 5.5): 1.71; (6)ACD/BCF (pH 7.4): 1.71; (7)ACD/KOC (pH 5.5): 51.15; (8)ACD/KOC (pH 7.4): 51.15; (9)#H bond acceptors: 2; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 4; (12)Index of Refraction: 1.393; (13)Molar Refractivity: 42.05 cm³; (14)Molar Volume: 176 cm³; (15)Polarizability: 16.67×10^-24 cm³; (16)Surface Tension: 19.3 dyne/cm; (17)Enthalpy of Vaporization: 33.79 kJ/mol; (18)Vapour Pressure: 24 mmHg at 25°C; (19)Rotatable Bond Count: 4; (20)Exact Mass: 148.091956; (21)MonoIsotopic Mass: 148.091956; (22)Topological Polar Surface Area: 18.5; (23)Heavy Atom Count: 9; (24)Complexity: 65.5.

Preparation of Diethoxydimethylsilane: It can be obtained by dichloro-dimethyl-silane and ethanol. This reaction needs reagent N,N-diethyl-aniline.

Uses of Diethoxydimethylsilane: It is a precursor in the production of the silicone polymer polydimethylsiloxane (PDMS). It also can react with 2,2'-oxy-bis-ethanol to get 2,2-dimethyl-[1,3,6,2]trioxasilocane. This reaction needs reagent NaOCH₃ and solvent dioxane, methanol by heating. The yield is 80%.

When you are using this chemical, please be cautious about it as the following:
It is highly flammable, so people should keep it away from sources of ignition. It is also irritating to eyes and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing.

People can use the following data to convert to the molecule structure.
1. SMILES:O(CC)[Si](OCC)(C)C
2. InChI:InChI=1/C6H16O2Si/c1-5-7-9(3,4)8-6-2/h5-6H2,1-4H3
3. InChIKey:YYLGKUPAFFKGRQ-UHFFFAOYAK

The following are the toxicity data which has been tested.