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, 25-35cs;POLYMETHYLHYDROSILOXANE, TRIMETHYLSILYL TERMINATED, 15-25cs;CFS-F(H);VISCOSITY 85 CST.;Polymethyldrosiloxane
- CBNumber:
- CB0694968
- Molecular Formula:
- C7H22O2Si3
- Molecular Weight:
- 222.5
- MDL Number:
- MFCD00084478
- MOL File:
- 63148-57-2.mol
- MSDS File:
- SDS
| Product description | Number | Pack Size | Price |
| Poly(methyl hydrogen siloxane) forsynthesis | 8.18063 | 250ML | $98.1 |
| Poly(methyl hydrogen siloxane) forsynthesis | 8.18063 | 1L | $118 |
| Poly(methylhydrosiloxane) average Mn 1,700-3,200 | 176206 | 50g | $44.7 |
| Poly(methylhydrosiloxane) average Mn 1,700-3,200 | 176206 | 250g | $90.7 |
| Poly(methylhydrosiloxane) viscosity 15-40 mPa.s (20 °C) | 81330 | 100ml | $90.6 |
| More product size | |||
| 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 |
| Appearance | Colorless to light yellow Liquid |
| PH | 7 (H2O) |
| Viscosity | 15-40mPa.s(20°C) |
| Water Solubility | Not miscible or difficult to mix in water. |
| InChIKey | KZFYHEHDBPYRMU-UHFFFAOYSA-N |
| SMILES | [Si](C)(C)(C)C.[Si](O)(C)(C)C.[SiH](O)(C)C |
| Indirect Additives used in Food Contact Substances | METHYL HYDROGEN POLYSILOXANE |
| CAS DataBase Reference | 63148-57-2 |
| EPA Substance Registry System | Siloxanes and Silicones, Me hydrogen (63148-57-2) |
| UNSPSC Code | 12352103 |
| NACRES | NA.23 |
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 | |||||||||
| PPE | Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 10-36/37/38 | |||||||||
| Safety Statements | 26-36-24/25-23-16 | |||||||||
| WGK Germany | 3 | |||||||||
| F | 10-21 | |||||||||
| TSCA | TSCA listed | |||||||||
| HS Code | 39100000 | |||||||||
| Storage Class | 10 - Combustible liquids | |||||||||
| NFPA 704 |
|
Poly(methylhydrosiloxane) price More Price(13)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 8.18063 | Poly(methyl hydrogen siloxane) forsynthesis | 63148-57-2 | 250ML | $98.1 | 2025-07-31 | Buy |
| Sigma-Aldrich | 8.18063 | Poly(methyl hydrogen siloxane) forsynthesis | 63148-57-2 | 1L | $118 | 2025-07-31 | Buy |
| Sigma-Aldrich | 176206 | Poly(methylhydrosiloxane) average Mn 1,700-3,200 | 63148-57-2 | 50g | $44.7 | 2025-07-31 | Buy |
| Sigma-Aldrich | 176206 | Poly(methylhydrosiloxane) average Mn 1,700-3,200 | 63148-57-2 | 250g | $90.7 | 2025-07-31 | Buy |
| Sigma-Aldrich | 81330 | Poly(methylhydrosiloxane) viscosity 15-40 mPa.s (20 °C) | 63148-57-2 | 100ml | $90.6 | 2025-07-31 | Buy |
Poly(methylhydrosiloxane) Chemical Properties,Uses,Production
Handing storage
Stable to air and moisture; incompatible with strong acids, bases, or oxidants (forms hydrogen upon decomposition); generally considered non-toxic, however thorough toxicity studies have not been performed; skin/eye contact and inhalation should be avoided.
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
reaction suitability
reagent type: reductant
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].
Toxics Screening Level
The AAC fo DC 1107 to be used for evaluating emissions of this compound is 30 μg/m3 on an annual average basis.
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 | |
|---|---|---|---|---|---|
| Wuhan Bright Chemical Co., Ltd | +86-02785804899 +86-15071395570 | alice@brightchemical.com.cn | China | 93 | 58 |
| Dongguan City Betterly New Materials co.,Ltd | +86-13713468294 | sadie@betely.com | China | 39 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615350571055 | Sibel@chuanghaibio.com | China | 8753 | 58 |
| Hebei Chuanghai Biotechnology Co., Ltd | +8615531151365 | mina@chuanghaibio.com | China | 18126 | 58 |
| Anhui Ruihan Technology Co., Ltd | +8617756083858 | daisy@anhuiruihan.com | China | 973 | 58 |
| Hebei Zhuanglai Chemical Trading Co.,Ltd | +8613343047651 | admin@zlchemi.com | China | 3692 | 58 |
| Jiangxi New jiayi New Materials Co., Ltd. | 15988280056 | mina@xjysi.com | CHINA | 27 | 55 |
| Shanghai Daken Advanced Materials Co.,Ltd | +86-2158073036 | info@dakenam.com | China | 13620 | 58 |
| Hangzhou Bayee Chemical Co., Ltd. | 0086-571-86990109 | rachelhoo@bayeechem.com | China | 104 | 55 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21599 | 55 |
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View Lastest Price from Poly(methylhydrosiloxane) manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
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2026-01-24 | Poly(methylhydrosiloxane)
63148-57-2
|
0.99 | RongNa Biotechnology Co.,Ltd | ||||
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2026-01-05 | Poly(methylhydrosiloxane)
63148-57-2
|
US $10.00 / ASSAYS | 1ASSAYS | 99% | 100 mt | Hebei Chuanghai Biotechnology Co., Ltd | |
 |
2025-12-01 | Poly(methylhydrosiloxane)
63148-57-2
|
US $0.00-0.00 / KG | 1KG | 98 | 10000KGS | Shaanxi Dideu New Materials Co. Ltd |
-
- Poly(methylhydrosiloxane)
63148-57-2
- 0.99
- RongNa Biotechnology Co.,Ltd
-
- Poly(methylhydrosiloxane)
63148-57-2
- US $10.00 / ASSAYS
- 99%
- Hebei Chuanghai Biotechnology Co., Ltd
-
- Poly(methylhydrosiloxane)
63148-57-2
- US $0.00-0.00 / KG
- 98
- Shaanxi Dideu New Materials Co. Ltd
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