Polymethylhydrosiloxane

• CAS: 9004-73-3
• Catalog Number: ACM9004733
• Category: Micro/NanoElectronics
• Molecular Weight: 115.23g/mol
• Molecular Formula: C5H11OSi
• Synonyms: METHYLHYDROGENSILOXAN POLYMER;PMHS;POLYMETHYLHYDROSILOXANES;POLYMETHYLHYDROSILOXANE, TRIMETHYLSILYL TERMINATED;Methyl hydrogen polysiloxane~PMHS;METHYLPOLYSILOXANEOIL;Poly[oxy(methylsilylene)];Polymethylhydrosiloxane
• Canonical SMILES: C[Si]1CCCCO1
• InChI: InChI=1S/C5H11OSi/c1-7-5-3-2-4-6-7/h2-5H2,1H3
• InChI Key: TXYXVOOPRILIHR-UHFFFAOYSA-N
• Melting Point: >177°C(lit.)
• Flash Point: 121°C
• Density: 0.995
• Appearance: Clear colorless viscous liquid
• Application: Polymethylhydrosiloxane (PMHS) serves as a versatile and valuable reducing agent, favored for its handling ease, cost-effectiveness, non-toxic nature, and mild reaction profile. It is particularly beneficial as an alternative to more hazardous or costly silanes or siloxanes and as a stoichiometric reductant in catalytic organotin-mediated processes. PMHS can be cross-linked using metal catalysts at low temperatures to create waterproof membranes, making it ideal for waterproofing textiles, glass, pottery, paper, leather, metal, cement, and marble. In the realm of chemical synthesis, PMHS finds applications in reducing esters to alcohols, with titanocene dichloride and n-BuLi or EtMgBr as catalysts, and offers a safer option compared to triethoxysilane for reducing phosphine oxides to phosphines, catalyzed by Ti(O-i-Pr)4. Additionally, it supports greener amine synthesis through reductive amination, offering a sustainable alternative to borohydrides, and has been employed in studies for the conjugate reduction of α, β-unsaturated carbonyl and carboxyl compounds.
• Assay: 0.99
• Complexity: 56
• Covalently-Bonded Unit Count: 1
• EC Number: 618-393-8
• Exact Mass: 115.057917g/mol
• Formal Charge: 0
• H-Bond Acceptor: 1
• H-Bond Donor: 0
• Heavy Atom Count: 7
• Monoisotopic Mass: 115.057917g/mol
• Packaging: 1 ton
• Refractive Index: 1.3969-1.3989
• Rotatable Bond Count: 0
• Stability: Stable under normal temperatures and pressures.
• Storage Conditions: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.