Poly(methylhydrosiloxane)

Base Information

• Chemical Name: Poly(methylhydrosiloxane)
• CAS No.: 63148-57-2
• Molecular Formula: C3H9OSi.(CH4OSi)n.C3H9Si
• Molecular Weight: 254.59000
• Hs Code.: 39100000

Synonyms:PMHS;DC1107 Silicone Oil;Methyl Hydrogen Silicone;Methyl hydrogen polysiloxane;Polymethylhydrosiloxane (PMHS);

Chemical Property of Poly(methylhydrosiloxane)

Chemical Property:

• Appearance/Colour: colorless transparent
• Vapor Pressure: 38 hPa (20 °C)
• Melting Point: <-60°C
• Refractive Index: n20/D 1.382(lit.)
• Boiling Point: 205oC
• Flash Point: 82 °F
• PSA: 40.46000
• Density: 1.006
• LogP: 2.73010
• Storage Temp.: Store below +30°C.
• Water Solubility.: Not miscible or difficult to mix in water.

Purity/Quality:

99%min ^*data from raw suppliers

Poly(methyl hydrogen siloxane) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 10-36/37/38
• Safety Statements: 26-36-24/25-23-16

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Description: Poly(methylhydrosiloxane) is a reducing agent. For example, it can be used for the reduction of esters to alcohols as well as the reduction of aldehydes and ketone. It can also be used for the reduction of phosphine oxides to phosphine. Recent study has also used it for conjugate reduction of α, β-Unsaturated Carbonyl and Carboxyl Compounds. Finally, it is also used in greener amine synthesis mediated by reductive amination which is an alternative to borohydrides.
• Uses: Polymethylhydrosiloxane(PMHS) is an easily handled,inexpensive,non-toxic,and mild reducing agent. PMHS is attractive as a substitute for more expensive or hazardous silanes or siloxanes and as the stoichiometric reductant in catalytic organotin-mediated processes. It can be cross linked by metal catalyst at low temperature to form waterproof membrane. It is used as waterproof agent of textile, glass, pottery, paper, leather, metal, cement and marble etc, especially in textile waterproof. It is used as insulator and cross linker of paper. Poly(methylhydrosiloxane) is used in the reduction of esters to alcohols, catalyzed by a combination of titanocene dichloride and either n-BuLi or EtMgBr. It is a safer alternative to triethoxysilane, B22063, for reduction of phosphine oxides to phosphines, catalyzed by Ti(O-i-Pr)4. It is also used in greener amine synthesis by reductive amination as an alternative to borohydrides.

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