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| Product Name: |
Polymethylhydrosiloxane
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| Supply Ability: |
20000 mt |
| Related proudcts |
poly(methylhydrosilo, |
| Specifications |
98%min |
| Price Term: |
FOB/CIF/CFR |
| Port of loading: |
ANY PORT IN CHINA |
| Minimum Order |
1 KG |
| Unit Price: |
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Polymethylhydrosiloxane (PMHS) is a polymer with the general structure -(CH3(H)Si-O)-. It is used in organic chemistry as a mild and stable reducing agent easily transferring hydrides to metal centers.A variety of related materials are available under the following CAS registry numbers 9004-73-3, 16066-09-4, 63148-57-2, 178873-19-3. These include the tetramer ((MeSiHO)4), copolymers of dimethysiloxane and methylhydrosiloxane, and trimethylsilyl terminated materials.
This material is prepared by the hydrolysis of methyldichlorosilane:
n MeSiHCl2 + n H2O ¡ú (MeSiHO)n + 2n HCl
The related polymer polydimethylsiloxane (PDMS) is made similarly, but lacking Si-H bonds, it exhibits no reducing properties.
Illustrative of its use, PMHS is used for in situ conversion of tributyltin oxide to tributyltin hydride:
2"(MeSiH)" + (Bu3Sn)2O ¡ú "(Me2Si2O" + 2 Bu3SnH
Polymethylhydrosiloxane
Names
Other names
Methyl hydrogen siloxane; Poly(methyl siloxane); Poly(methylhydrosiloxane); Polysilicone 4
Properties
Chemical formula (CH3(H)SiO)n
Product Name:Polymethylhydrosiloxane
Synonyms:METHYLHYDROGENSILOXAN POLYMER;PMHS;POLYMETHYLHYDROSILOXANES;POLYMETHYLHYDROSILOXANE, TRIMETHYLSILYL TERMINATED;Methyl hydrogen polysiloxane~PMHS;METHYLPOLYSILOXANEOIL;Poly[oxy(methylsilylene)];Polymethylhydrosiloxane
CAS:9004-73-3
MF:(CH3)3SiO[(CH3)HSiO] nSi(CH3)
MW:0
EINECS:
bp >177 ℃(lit.)
density 1.006 g/mL at 25 ℃(lit.)
refractive index n20/D 1.398
Fp 250 ¡ãF
Water Solubility PRACTICALLY INSOLUBLE
Sensitive Moisture Sensitive |
| Company: |
ZXCHEMTECH
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| Contact: |
Mr. sales AT tjzxchem DOT com |
| Address: |
10B, Pan China International Center, No. 931 YingKou Road, TangGu, Tianjin |
| Postcode: |
300451 |
| Tel: |
86 022 89880739 |
| Fax: |
86 022-66880623 |
| E-mail: |
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