| 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, Rollbackers74,236 edits eEROS cite per WP:SECONDARY, I think the CAS # is wrongNext edit → | ||
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| | Abbreviations = PMHS | | Abbreviations = PMHS | ||
| | CASNo_Ref = {{cascite|correct|CAS}} | | CASNo_Ref = {{cascite|correct|CAS}} | ||
| | CASNo = |
| CASNo = 63148-57-2 | ||
| | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ||
| | ChemSpiderID = NA | | ChemSpiderID = NA | ||
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| | MolarMass = variable | | MolarMass = variable | ||
| | Appearance = | | Appearance = | ||
| | Density = | | Density = 1.06 g/cm<sup>3</sup> | ||
| | MeltingPt = | | MeltingPt = | ||
| | BoilingPt = | | BoilingPt = | ||
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| }} | }} | ||
| '''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. | '''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== | ==See also== | ||
Revision as of 21:05, 5 January 2014
| |
| Names | |
|---|---|
| Other names Methyl hydrogen siloxane; Poly(methyl siloxane); Poly(methylhydrosiloxane); Polysilicone 4 | |
| Identifiers | |
| CAS Number | |
| Abbreviations | PMHS |
| ChemSpider | |
| ECHA InfoCard | 100.119.568 
|
| 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).
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Infobox references
| |
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
- 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
- Polydimethylsiloxane (PDMS)
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