Dimethyldimethoxysilane (PubChem CID: 66187) — also referred to as silane, dimethoxydimethyl, KBM 22, UNII-A3QDB1RS1C, dimethyl dimethoxysilane, dimethoxy dimethyl silane, A3QDB1RS1C, dimethoxy-dimethylsilane, dimethyl dimethoxy silane, and dimethyl dimethoxy silicane — is a chemical compound with multiple synonymous names.
| Boiling Point | 81°C |
| Color | Colorless |
| Formula Weight | 120.22 |
| Physical Form | Clear Liquid at 20°C |
| Chemical Name or Material | Dimethoxydimethylsilane |
| UN Number | 1993 |
Classification of the substance or mixture
GHS Label elements, including precautionary statements
Hazards not otherwise classified (HNOC) or not covered by GHS
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Dimethyl Dimethoxysilane is an organosilicon compound used as a silane precursor in silicone manufacturing, surface treatments, and coatings. It is a clear, volatile liquid valued for its reactivity and compatibility with various organic and inorganic systems.
Dimethyl Dimethoxysilane is a flammable, moisture-sensitive liquid with low viscosity and a sharp odor. It hydrolyzes in the presence of water, releasing methanol, and should be stored under dry, inert conditions to maintain its chemical stability.
The chemical formula is C4H12O2Si. Its molecular structure features a silicon atom bonded to two methyl groups and two methoxy groups, giving it reactive properties ideal for siloxane and silicone synthesis.
Dimethyl Dimethoxysilane remains liquid at room temperature and does not have a precise melting point. It has a boiling point around 93°C, and due to its volatility, it should be handled in sealed, controlled environments.
This compound is used in the production of siloxane polymers, adhesives, sealants, and treated surfaces. Its reactive silane groups make it effective as a coupling agent, improving bond strength between organic and inorganic materials.
