Poly(methylhydrosiloxane)
- CAS No.
- 63148-57-2
- Chemical Name:
- Poly(methylhydrosiloxane)
- Synonyms
- Methyl Hydrogen Silicone Fluid;Hydrogen silicone oil;Methyl Hydrogen Silicone Oil;Hydrosilicone oil;Methylhydrogensiloxane polymer, PMHS;POLYMETHYLHYDROSILOXANE, TRIMETHYLSILYL TERMINATED, 15-25cs;POLYMETHYLHYDROSILOXANE, TRIMETHYLSILYL TERMINATED, 25-35cs;CFS-F(H);VISCOSITY 85 CST.;Polymethyldrosiloxane
- CBNumber:
- CB0694968
- Molecular Formula:
- C7H22O2Si3
- Molecular Weight:
- 222.5
- MOL File:
- 63148-57-2.mol
- MSDS File:
- SDS
- Modify Date:
- 2025/1/27 9:38:02
| Melting point | <-60°C |
|---|---|
| Boiling point | 142 °C(lit.) |
| Density | 1.006 g/mL at 25 °C (lit.) |
| vapor pressure | 38 hPa (20 °C) |
| refractive index |
n |
| Flash point | 204 °C |
| storage temp. | Store below +30°C. |
| solubility | Soluble in most ethereal, chlorinated, or hydrocarbon solvents as well as EtOH, i-PrOH, warm DMF, and warm NMP; insoluble in MeOH, DMSO, acetonitrile, and water |
| form | liquid |
| Specific Gravity | 0.98 |
| PH | 7 (H2O) |
| Water Solubility | Not miscible or difficult to mix in water. |
| CAS DataBase Reference | 63148-57-2 |
| EPA Substance Registry System | Siloxanes and Silicones, Me hydrogen (63148-57-2) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H319-H315-H335 | |||||||||
| Precautionary statements | P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362 | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 10-36/37/38 | |||||||||
| Safety Statements | 26-36-24/25-23-16 | |||||||||
| WGK Germany | 3 | |||||||||
| F | 10-21 | |||||||||
| TSCA | Yes | |||||||||
| HS Code | 39100000 | |||||||||
| NFPA 704 |
|
Poly(methylhydrosiloxane) price More Price(12)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 81330 | Poly(methylhydrosiloxane) viscosity 15-40?mPa.s?(20?°C) | 63148-57-2 | 100ML | ₹5661.48 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 81330 | Poly(methylhydrosiloxane) viscosity 15-40?mPa.s?(20?°C) | 63148-57-2 | 500ML | ₹11745.13 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 8.18063 | Poly(methyl hydrogen siloxane) for synthesis | 63148-57-2 | 1L | ₹8919.99 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 8.18063 | Poly(methyl hydrogen siloxane) for synthesis | 63148-57-2 | 250ML | ₹10149.99 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 176206 | Poly(methylhydrosiloxane) average Mn 1,700-3,200 | 63148-57-2 | 50G | ₹1980 | 2022-06-14 | Buy |
Poly(methylhydrosiloxane) Chemical Properties,Uses,Production
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.
Chemical Properties
Colorless liquid
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.
Preparation
Poly(methylhydrosiloxane) is prepared by hydrolysis of methyldichlorosilane followed by heating (60–150℃) the resultant mixture of cyclic silanes in the presence of hexamethyldisiloxane generates the linear polysiloxane.
General Description
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product is an environmentally benign reducing agent and has been enhanced for catalytic efficiency. Click here for more information.
Harnessing the reactivity of poly(methylhydrosiloxane) for the reduction and cyclization of biomass to high-value products
Synthesis
Poly(methylhydrosiloxane)(PMHS) is synthesized by the controlled hydrolysis of MeSiHCl2[1]. 
Advantages
PMHS is synthesized by the controlled hydrolysis of MeSiHCl2, a byproduct in producing Me2SiCl2, a feedstock for the silicone industry. As a byproduct of the silicone industry, it is a cheap, easy to handle, and environmentally friendly reducing agent. PMHS is more air and moisture-stable than other silanes and can be stored for long periods of time without loss of activity. In addition to being synthesized from a waste product, PMHS is cheap, stable to air and moisture, and is considered nontoxic[2].
References
[1] HEIN N M, SEO Y, LEE S J, et al. Harnessing the reactivity of poly(methylhydrosiloxane) for the reduction and cyclization of biomass to high-value products?[J]. Green Chemistry, 2019, 10: 2662-2669. DOI:10.1039/C9GC00705A.
[2] Hein, Nicholas M. et al. “Harnessing the reactivity of poly(methylhydrosiloxane) for the reduction and cyclization of biomass to high-value products?.” Green Chemistry 10 (2019): 2662–2669.
Poly(methylhydrosiloxane) Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6257 | 58 | Inquiry |
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5870 | 58 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6905 | 58 | Inquiry |
| Central Drug House(P) Ltd. | 91-11-49404040 | New Delhi, India | 6157 | 58 | Inquiry |
| Supreme Silicones India Private Limited | 08047307356 | Pune, India | 5 | 58 | Inquiry |
| Wuhan Kemi-Works Chemical Co., Ltd. | +86-2785736489 +8618171418573 | China | 729 | 58 | Inquiry |
| Wuhan Bright Chemical Co., Ltd | +86-02785804899 +86-15071395570 | China | 93 | 58 | Inquiry |
| Dongguan City Betterly New Materials co.,Ltd | +86-13713468294 +86-13713468294 | China | 39 | 58 | Inquiry |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615531157085 | China | 8808 | 58 | Inquiry |
| Hebei Mujin Biotechnology Co.,Ltd | +86 13288715578 +8613288715578 | China | 12809 | 58 | Inquiry |
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