63148-57-2

Basic information

• Product Name: Poly(methylhydrosiloxane)
• Synonyms: DOW CORNING 1107 WATER REPELLENT AND POWDER TREATMENT;Poly(methylhydrosiloxane);Hydrosilicone oil;POLYMETHYLHYDROSILOXANE, TRIMETHYLSILYL TERMINATED, 15-25cs;POLYMETHYLHYDROSILOXANE, TRIMETHYLSILYL TERMINATED, 25-35cs;POLYMETHYLHYDROSILOXANE, TRIMETHYLSILYL TERMINATED, 35-45cs;Methylhydrogensiloxane polymer, PMHS;Poly(methylhydrosiloxane-co-dimethylsiloxane)
• CAS NO: 63148-57-2
• Molecular Formula: C7H22O2Si3
• Molecular Weight: 222.5
• EINECS: 217-496-1
• Product Categories: Silane series;PDMS Elastomers/ResinsPolymer Science;Polysiloxanes;Self Assembly&Contact Printing;Silicones;Stamps for Nanoprint Lithography&Microcontact Printing;Silicone Series
• Mol File: 63148-57-2.mol

Chemical Properties

• Melting Point: <-60°C
• Boiling Point: 142 °C(lit.)
• Flash Point: 82 °F
• Appearance: colorless transparent
• Density: 1.006 g/mL at 25 °C(lit.)
• Vapor Pressure: 38 hPa (20 °C)
• Refractive Index: n20/D 1.382(lit.)
• Storage Temp.: Store below +30°C.
• Water Solubility: Not miscible or difficult to mix in water.
• CAS DataBase Reference: Poly(methylhydrosiloxane)(CAS DataBase Reference)
• NIST Chemistry Reference: Poly(methylhydrosiloxane)(63148-57-2)
• EPA Substance Registry System: Poly(methylhydrosiloxane)(63148-57-2)

Safety Data

• Hazard Codes: Xi
• Statements: 10-36/37/38
• Safety Statements: 26-36-24/25-23-16
• RIDADR: UN 1993 3/PG 2
• WGK Germany: 3
• F: 10-21
• TSCA: Yes
• Hazardous Substances Data: 63148-57-2(Hazardous Substances Data)

Usage

Uses

Used in Chemical Synthesis:
Poly(methylhydrosiloxane) is used as a reducing agent for 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 the 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.
Used in Textile Industry:
Poly(methylhydrosiloxane) is used as a waterproof agent for textiles, providing water resistance to various fabrics.
Used in Construction Industry:
Poly(methylhydrosiloxane) is used as a waterproof agent for various construction materials such as glass, pottery, paper, leather, metal, cement, and marble.
Used in Paper Industry:
Poly(methylhydrosiloxane) is used as an insulator and cross-linker for paper, improving its properties and performance.
Used in Electronics Industry:
Poly(methylhydrosiloxane) can be cross-linked by metal catalysts at low temperatures to form waterproof membranes, which can be used in electronic devices for protection against moisture and other environmental factors.

References

https://www.alfa.com/en/catalog/L14561/ http://www.sigmaaldrich.com/catalog/product/aldrich/176206? lang=en?ion=US Wang, Zhigang, A. E. W. ?. And, and J. G. Verkade. "P (MeNCH2CH2)3N:? An Efficient Promoter for the Reduction of Aldehydes and Ketones with Poly (methylhydrosiloxane)." Cheminform 31.7(2000):no-no. Dfj, Hamstra, et al. "Poly (methylhydrosiloxane) as a green reducing agent in organophosphorus-catalysed amide bond formation." Organic & Biomolecular Chemistry 15.30 (2017). Kawamorita, Soichiro, et al. "Conjugate Reduction of α, β- Unsaturated Carbonyl and Carboxyl Compounds with Poly (methylhydrosiloxane) Catalyzed by a Silica-Supported Compact Phosphane–Copper Complex."Advanced Synthesis & Catalysis 354.18 (2012):3440-3444.