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25 g
$60.00
100 g
$195.00
2.5 kg
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Product data and descriptions listed are typical values, not intended to be used as specification.

  • Einecs Number

    238-921-7
  • HMIS

    2-4-1-X
  • Molecular Formula

    C4H12OSi
  • Molecular Weight (g/mol)

    104.22
  • Purity (%)

    97%
  • TSCA

    Yes
  • Boiling Point (˚C/mmHg)

    54-5°
  • Density (g/mL)

    0.757
  • Flash Point (˚C)

    15 °C
  • Refractive Index @ 20˚C

    1.3683

Additional Properties

  • Hydrolytic Sensitivity

    7: reacts slowly with moisture/water
  • Application

    Waterproofing agent for space shuttle thermal tiles.1

    Reference

    1. Hill, W. et al. Polym. Mater. Sci. Eng. 1990, 62, 668.

    Safety

  • Hazard Info

    oral rat, LD50: 5,000 mg/kg
  • Packaging Under

    Nitrogen
  • Tri-substituted Silane Reducing Agent

    Organosilanes are hydrocarbon-like and possess the ability to serve as both ionic and free-radical reducing agents. These reagents and their reaction by-products are safer and more easily handled and disposed than many other reducing agents. The metallic nature of silicon and its low electronegativity relative to hydrogen lead to polarization of the Si-H bond yielding a hydridic hydrogen and a milder reducing agent compared to aluminum-, boron-, and other metal-based hydrides. A summary of some key silane reductions are presented in Table 1 of the Silicon-Based Reducing Agents brochure.

    Alkyl Silane - Conventional Surface Bonding

    Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.

    Dimethylethoxysilane; Ethoxydimethylsilane

  • Vapor pressure, 20 °C: 281 mm
  • Undergoes hydrosilylation reactions
  • Waterproofing agent for space shuttle thermal tiles
  • Will form high-boiling polymeric by-products with aqueous work-up
  • Extensive review of silicon based reducing agents: Larson, G.; Fry, J. L. "Ionic and Organometallic-Catalyzed Organosilane Reductions", Wipf, P., Ed.; Wiley, 2007
  • Silicon Chemistry, Articles

    Key Organosilane Reductions – Larson

    The Si-H bond, based on the relative electrongativities of Si and H, is polarised such that the hydrogen is slightly hydridic in nature. The fact that the silanes are not strongly hydridic makes them excellent candidates for mild and selective reductions of organic functional groups.

    Silicon Chemistry, Articles

    Organosilane Reductions with Polymethylhydrosiloxanes – Larson

    The reduction of a comprehensive range of organic functional groups ranging from carboxylic acids to aryl fluorides have been shown to be possible with a variety of organosilanes. A comprehensive review of the ionic and transition metal-catalyzed reductions of organic functional groups has recently appeared.

    Silicon Chemistry, Articles

    The Synthesis of Gliflozins – Larson

    Some of the general approaches to the key steps in the synthesis of gliflozins, a class of glucose transporters, are discussed. In particular the glycosidation step for the introduction of the key aryl moiety onto the glucose and the reduction steps are presented.  Click here for more product information on tetramethyldisiloxane (TMDO, TMDS) reducing agent.