Poly(methylhydrosiloxane)
Handing storage- Product Name
- 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
- Formula Weight
- 222.5
- MOL File
- 63148-57-2.mol
Poly(methylhydrosiloxane) Property
- 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
- n20/D 1.382(lit.)
- 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
- 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
- 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
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P264Wash hands thoroughly after handling.
P264Wash skin thouroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P321Specific treatment (see … on this label).
P332+P313IF SKIN irritation occurs: Get medical advice/attention.
P362Take off contaminated clothing and wash before reuse.
N-Bromosuccinimide Price
- Product number
- 8.18063
- Product name
- Poly(methyl hydrogen siloxane)
- Purity
- forsynthesis
- Packaging
- 250ML
- Price
- $95.5
- Updated
- 2024/03/01
- Product number
- 8.18063
- Product name
- Poly(methyl hydrogen siloxane)
- Purity
- forsynthesis
- Packaging
- 1L
- Price
- $115
- Updated
- 2024/03/01
- Product number
- 176206
- Product name
- Poly(methylhydrosiloxane)
- Purity
- average Mn 1,700-3,200
- Packaging
- 50g
- Price
- $43.2
- Updated
- 2024/03/01
- Product number
- 176206
- Product name
- Poly(methylhydrosiloxane)
- Purity
- average Mn 1,700-3,200
- Packaging
- 250g
- Price
- $87.7
- Updated
- 2024/03/01
- Product number
- L14561
- Product name
- Poly(methylhydrosiloxane)
- Packaging
- 50g
- Price
- $35
- Updated
- 2024/03/01
Poly(methylhydrosiloxane) Chemical Properties,Usage,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
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
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View Lastest Price from Poly(methylhydrosiloxane) manufacturers
- Product
- Poly(methylhydrosiloxane) 63148-57-2
- Price
- US $100.00/kg
- Min. Order
- 1kg
- Purity
- 99
- Supply Ability
- 5000
- Release date
- 2024-04-28
- Product
- Polymethylhydrosiloxane 63148-57-2
- Price
- US $10.00/kg
- Min. Order
- 1kg
- Purity
- 99.7%
- Supply Ability
- 200000kg
- Release date
- 2024-04-25
- Product
- Poly(methylhydrosiloxane) USP/EP/BP 63148-57-2
- Price
- US $1.10/g
- Min. Order
- 1g
- Purity
- 99.0% min
- Supply Ability
- 100 tons min
- Release date
- 2021-05-27