POLYMETHYLHYDROSILOXANE, TRIMETHYLSILYL TERMINATED, 15-25 cSt

Product Code: HMS-991
CAS No: 63148-57-2
SDS Sheets: EU | US
COMMERCIAL
63148-57-2
Pack Size
Quantity
Price
 
100 g
$22.00
3 kg
$129.00
15 kg
Contact Us For Pricing
18 kg
Contact Us For Pricing
180 kg
Contact Us For Pricing

Product data and descriptions listed are typical values, not intended to be used as specification.

  • HMIS

    1-2-1-X
  • Molecular Weight (g/mol)

    1,400-1,800
  • TSCA

    Yes
  • Boiling Point (˚C/mmHg)

    NA
  • Density (g/mL)

    0.98
  • Refractive Index @ 20˚C

    1.395
  • Viscosity at 25 ˚C (cSt)

    15-25

Safety

  • Packaging Under

    Nitrogen
  • Siloxane-Based 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.

    Pendant Functional Fluid; polyMethylHydrosiloxanes, TMS Terminated

    MethylHydrosiloxane homopolymers are used as water-proofing agents, reducing agents and as components in some foamed silicone systems.

    Poly(methylhydrosiloxane); Methyl hydrogen siloxane; Polysiloxanes, methyl hydrogen; Siloxanes and silicones, methyl hydrogen

  • Viscosity: 15-25 cSt
  • Molecular Weight: 1,400-1,800 g/mol
  • Mol% Hydride: 100
  • Reduces lactones to lactols
  • Reduces aldehydes, ketones, esters, lactones, triglycerides and epoxides to alcohols with zinc hydride catalysis
  • With titanium tetraisopropoxide catalysis carries out reductive amination of ketones and aldehydes and the reduction of acids or esters to 1° alcohols
  • With TBAF catalysis selectively reduces aldehydes over ketones
  • Used to generate tri-n-butyltin hydride ‘in-situ’ and in a one-pot hydrostannylation/Stille coupling sequence
  • Reduces esters to alcohols
  • 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.