Dimethyldiethoxysilane

Dimethyldiethoxysilane, sometimes abbreviated DMDEOS or DMDES, is an organosilicon compound. DMDEOS is a precursor in the production of the silicone polymer polydimethylsiloxane (PDMS).

Dimethyldiethoxysilane
Structural formula of dimethyldiethoxysilane
Ball-and-stick model of the dimethyldiethoxysilane molecule
Names
Preferred IUPAC name
Diethoxydi(methyl)silane
Identifiers
3D model (JSmol)
Abbreviations DMDEOS
1736110
ChemSpider
ECHA InfoCard 100.001.025 Edit this at Wikidata
EC Number
  • 201-127-6
RTECS number
  • VV3590000
UNII
UN number 2380
  • InChI=1S/C6H16O2Si/c1-5-7-9(3,4)8-6-2/h5-6H2,1-4H3 checkY
    Key: YYLGKUPAFFKGRQ-UHFFFAOYSA-N checkY
  • InChI=1/C6H16O2Si/c1-5-7-9(3,4)8-6-2/h5-6H2,1-4H3
    Key: YYLGKUPAFFKGRQ-UHFFFAOYAK
  • O(CC)[Si](OCC)(C)C
  • O(CC)[Si](OCC)(C)C
Properties
C6H16O2Si
Molar mass 148.277 g·mol−1
Appearance Colourless liquid
Density 0.865 g cm−3
Melting point −87 °C (−125 °F; 186 K)
Boiling point 114 °C (237 °F; 387 K)
Solubility soluble in carbon tetrachloride[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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DMDEOS is an intermediate silane useful for blocking hydroxyl and amino groups in organic synthesis reactions. This silylating step allows subsequent reactions to be carried out which would be adversely affected by the presence of active hydrogen in the hydroxyl or amine groups. Following the reaction step, hydroxyl or amine groups blocked with DMDEOS may be recovered by a hydrolysis procedure. DMDEOS is also used for preparing hydrophobic and release materials as well as enhancing flow of powders.[2][3]

ReferencesEdit

  1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 3–180, ISBN 0-8493-0594-2
  2. ^ Merhari, Lhadi (2009), Hybrid Nanocomposites for Nanotechnology, Springer, pp. 184–185, ISBN 978-0-387-72398-3, retrieved 2009-07-19
  3. ^ "GP-49 Dimethyldiethoxysilane | Genesee Polymers Corporation".