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PMHS Entrance
PMHS may refer to: * Polymethylhydrosiloxane Schools * Parramatta Marist High School, Westmead, New South Wales, Australia * Parry McCluer High School, Buena Vista, Virginia, United States * Pasadena Memorial High School, Pasadena, Texas, United States * Patchogue-Medford High School, Medford, New York, United States * Pedro Menendez High School, St. Augustine, Florida, United States * Pelham Memorial High School, Pelham, New York, United States * Penn Manor High School, Millersville, Pennsylvania, United States * Pennsville Memorial High School, Pennsville, New Jersey, United States * Perry Meridian High School, Indianapolis, Indiana, United States * Philadelphia Mennonite High School, Philadelphia, Pennsylvania, United States * Picayune Memorial High School Picayune Memorial High School is a grade 9–12 high school located in Picayune, Mississippi, United States. State championships Football *1925 *1943 *1948 *1986 *2011 *2013 *2021 *2022 Baseball *2002 Golf *1992 *2021 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymethylhydrosiloxane
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 and a number of other reducible functional groups. A variety of related materials are available under the following CAS registry numbers 9004-73-3, 16066-09-4, 63148-57-2, 178873-19-3. These include the tetramer ((MeSiHO)4), copolymers of dimethylsiloxane and methylhydrosiloxane, and trimethylsilyl terminated materials. This material is prepared by the hydrolysis of monomethyldichlorosilane CAS#: 75-54-7: :n MeSiHCl2 + n H2O → (MeSiHO)n + 2n HCl The related polymer polydimethylsiloxane (PDMS) is made similarly, but lacking Si-H bonds, it exhibits no reducing properties. Dimethyldichlorosilane CAS#: 75-78-5 is then used instead of monomethyldichlorosilane CAS#: 75-54-7. Illustrative of its use, PMHS is used for in situ conversion of tributyltin oxide to tributyltin hydride Tribut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |