| Trimethylsilanol | |
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Trimethylsilanol |
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Trimethylsilanol |
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Other names
Trimethylhydroxysilane |
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| Identifiers | |
| CAS number | 1066-40-6 |
| PubChem | 66110 |
| ChemSpider | 59498 |
| EC number | 213-914-1 |
| MeSH | Trimethylsilanol |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C3H10OSi |
| Molar mass | 90.2 g mol−1 |
| Exact mass | 90.050091475 g mol-1 |
| Appearance | Colourless liquid |
| Boiling point |
99 °C, 372 K, 210 °F |
| Related compounds | |
| Related compounds | tert-Butanol |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
| Infobox references | |
Trimethylsilanol (TMS), also trimethylhydroxysilane, is a silanol with the formula (CH3)3SiOH, or C3H10OSi. It is an organosilicon derivative of silane substituted with three methyls and one hydroxyl group. It is a volatile organic liquid with boiling point between 98.6–99 °C.
TMS is used to apply hydrophobic coating on silicate surfaces. It reacts with the silicon atoms of the substrate, coating the surface with a layer of methyl groups. A commercial example is Magic Sand.
TMS is a common contaminant in spacecraft atmospheres, where it is present due to outgassing of silicone-based materials.[1] It is a potential end group hydrolysis product of polydimethylsiloxane chains.
TMS, together with other silanols, is also being investigated as an antimicrobial agent.[2]