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Revision as of 00:32, 30 October 2013 editKetiltrout (talk | contribs)Autopatrolled, Extended confirmed users, Pending changes reviewers81,737 edits PMHS no longer redirects here← Previous edit Revision as of 21:05, 5 January 2014 edit undoSmokefoot (talk | contribs)Autopatrolled, Extended confirmed users, Pending changes reviewers, Rollbackers74,246 edits eEROS cite per WP:SECONDARY, I think the CAS # is wrongNext edit →
Line 10: | Abbreviations = PMHS | CASNo_Ref = {{cascite|correct|CAS}} | CASNo = 900463148-7357-32 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = NA Line 19: | MolarMass = variable | Appearance = | Density = 1.06 g/cm<sup>3</sup> | MeltingPt = | BoilingPt = Line 29: }}   '''Polymethylhydrosiloxane''' (PMHS) is a ] with the general structure -(CH<sub>3</sub>(H)Si-O)-. It is used in ] as a mild and stable ] agent easily transferring ]s to metal centers.<ref>J. M. Lavis, R. E. Maleczka, Jr. "Polymethylhydrosiloxane" Encyclopedia of Reagents for Organic Synthesis 2003, John Wiley & Sons. {{DOI|10.1002/047084289X.rn00062}} </ref> A variety of related materials are available under the following ] 16066-09-4, 63148-57-2, 178873-19-3, and 63148-57-2. These include the tetramer ((MeSiHO)<sub>4</sub>), copolymers of poly(dimethysiloxane and poly(methylhydrosiloxane), and trimethylsilyl terminated materials.   This material is prepared by the hydrolysis of methyldichlorosilane: :n MeSiHCl<sub>2</sub> + n H<sub>2</sub>O → (MeSiH)<sub>n</sub> + 2n HCl   ==References== <references />   ==See also==

Revision as of 21:05, 5 January 2014

Polymethylhydrosiloxane
Names
Other names Methyl hydrogen siloxane; Poly(methyl siloxane); Poly(methylhydrosiloxane); Polysilicone 4
Identifiers
CAS Number
Abbreviations PMHS
ChemSpider
ECHA InfoCard 100.119.568 Edit this at Wikidata
CompTox Dashboard (EPA)
Properties
Chemical formula (CH3(H)SiO)n
Molar mass variable
Density 1.06 g/cm
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound

Polymethylhydrosiloxane (PMHS) is a polymer with the general structure -(CH3(H)Si-O)-. It is used in organic chemistry as a mild and stable reducing agent easily transferring hydrides to metal centers. A variety of related materials are available under the following CAS registry numbers 16066-09-4, 63148-57-2, 178873-19-3, and 63148-57-2. These include the tetramer ((MeSiHO)4), copolymers of poly(dimethysiloxane and poly(methylhydrosiloxane), and trimethylsilyl terminated materials.

This material is prepared by the hydrolysis of methyldichlorosilane:

n MeSiHCl2 + n H2O → (MeSiH)n + 2n HCl

References

  1. J. M. Lavis, R. E. Maleczka, Jr. "Polymethylhydrosiloxane" Encyclopedia of Reagents for Organic Synthesis 2003, John Wiley & Sons. doi:10.1002/047084289X.rn00062

See also

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