Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octaphenyl-
Octaphenylcyclotetrasiloxane
CAS: 546-56-5
Molecular Formula: C48H40O4Si4
Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octaphenyl- - Names and Identifiers
| Name | Octaphenylcyclotetrasiloxane |
| Synonyms | CO9817 CFS-565 NSC 293057 Co-Formula CFS-565 Octaphenyltetracyclosiloxane OCTAPHENYLCYCLOTETRASILOXANE octaphenyl-cyclotetrasiloxan Octaphenylcyclotetrasiloxane octaphenylcylclotetrasiloxane Cyclotetrasiloxane, octaphenyl- 1,1,3,3,5,5,7,7-Octaphenylcyclotetrasiloxane Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octaphenyl- 2,2,4,4,6,6,8,8-octaphenyl-1,3,5,7,2,4,6,8-tetroxatetrasilocane 2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane |
| CAS | 546-56-5 |
| EINECS | 208-904-9 |
| InChI | InChI=1/C48H40O4Si4/c1-9-25-41(26-10-1)53(42-27-11-2-12-28-42)49-54(43-29-13-3-14-30-43,44-31-15-4-16-32-44)51-56(47-37-21-7-22-38-47,48-39-23-8-24-40-48)52-55(50-53,45-33-17-5-18-34-45)46-35-19-6-20-36-46/h1-40H |
Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octaphenyl- - Physico-chemical Properties
| Molecular Formula | C48H40O4Si4 |
| Molar Mass | 793.18 |
| Density | 1.185 |
| Melting Point | 196-198°C(lit.) |
| Boling Point | 334 °C |
| Flash Point | 200 °C |
| Water Solubility | insoluble |
| Solubility | very faint turbidity in Toluene |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | solid |
| Specific Gravity | 1.185 |
| Color | White to Almost white |
| BRN | 2320758 |
| Storage Condition | Room Temprature |
| Sensitive | 1: no significant reaction with aqueous systems |
| Refractive Index | 1.62 |
| MDL | MFCD00003268 |
| Physical and Chemical Properties | White powder Crystal insoluble in water, soluble in general chemical solvent, flash point greater than 200 ℃ |
Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octaphenyl- - Risk and Safety
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 1 |
| RTECS | GZ4398500 |
| TSCA | Yes |
| HS Code | 29319090 |
Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octaphenyl- - Reference Information
| update date: | 2022/11/12 10:05:38 |
| LogP | 9 at 20℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| application | octaphenylcyclotetrasiloxane can be physically mixed in antifouling paint in the form of monomer, reducing the surface energy of the paint, increasing the flexibility of the coating film, and also acting as a defoamer. Examples of applications are as follows: a heat dissipation coating consisting of the following parts of raw material components: 100-150 parts of polyvinyl chloride, 78-80 parts of polyether polyol, 80-85 parts of polymethyl methacrylate, 55-80 parts of polytetrafluoroethylene, 65-70 parts of polyisoprene, 80-90 parts of polypropylene, 6-10 parts of alumina, 6-8 parts of magnesium oxide, 4-6 parts of octa-phenyl cyclotetra siloxane, 6-8 parts of sodium thiosulfate, 7-9 parts of dodecyl dimethylamine acetylacetone, 5-8 parts of 2-thiophene formyl trifluor silica powder, 8-12 parts silica, 7-9 parts n-butanol, 3-5 parts dimethyl carbonate, 2-4 parts p-phenylenediamine, 3-5 parts stearoyl benzoyl methane, 4-5 parts triethyl phosphite, 8-10 parts titanium dioxide, 12-15 parts bentonite. The heat dissipation coating of the invention has good heat dissipation effect, good coating adhesion, strong stability, safety and non-toxic side effects. |
| overview | phenyl silicone products are a kind of products in which some or all methyl groups in the molecular structure are replaced by phenyl groups. it is a kind of silicone products with special properties and uses, and has more excellent high and low temperature resistance, radiation resistance, ultraviolet resistance, aging resistance, high refractive index and other characteristics. Phenyl silicone products can be divided into phenyl silicone monomer and phenyl polysiloxane according to the molecular structure. The phenyl monomer is mainly phenyl chlorosilane, which uses methyl chlorosilane as raw material, through Grign's method, heat shrinkage method, redistribution method, silicon hydrogen addition method, direct synthesis method and other processes to obtain phenyl-containing chlorosilane. Phenyl chlorosilane is very easy to hydrolyze and release hydrogen chloride. It is generally used as a raw material for preparing phenyl polysiloxane and will not be used directly. Phenylchlorosilane can be divided into phenyltrichlorosilane, diphenyldichlorosilane, methylphenyldichlorosilane, triphenylchlorosilane, etc. according to the position and number of substituent groups. Octaphenylcyclotetrasiloxane is an important silicone intermediate, which can be used to synthesize pharmaceutical intermediates, phenyl silicone oil, phenyl silicone resin, phenyl silicone rubber, etc.; it can also be used as polyurethane resin and epoxy resin, Acrylic resin, PP, PET, PE and other modified intermediates endow new products with high and low temperature resistance, radiation resistance, aging resistance and other properties. The synthesis of octaphenylcyclotetrasiloxane can be obtained by hydrolysis, drying, and cracking using diphenyldichlorosilane as the starting material. The purity and impurity content of diphenyldichlorosilane determine the quality of octaphenylcyclotetrasiloxane. To obtain high-quality octaphenylcyclotetrasiloxane, on the one hand, the raw material diphenyldichlorosilane can be purified to remove impurities. On the other hand, the product octaphenylcyclotetrasiloxane can also be purified. |
| use | used in the synthesis of pharmaceutical intermediates or other polymers, etc. |
Last Update：2024-04-09 15:16:51
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View History
Cyclotetrasiloxane, 2,2,4,4,6,6,8,8-octaphenyl-
15850-94-9
WHEATGRASS,POWDER
2-(4-Bromo-3,5-dimethyl-1H-pyrazol-1-yl)-6-chloropyridine
3,7-bis(dimethylamino)-5,5-dimethyldibenzo[b,e]silin-10(5H)-one
5,6,7,8-Tetrahydro-1,6-naphthyridin-3-ol
LATANOPROSTENE BUNOD
(3-chloropropyl)(3,4-dimethoxyphenethyl)methylammonium hydrogen oxalate
4-(2-(2-METHOXY-4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN
[4-(4,9-diethoxy-1-oxo-1,3-dihydro-2H-benzo[f]isoindol-2-yl)phenyl]acetic acid
15850-94-9
WHEATGRASS,POWDER
2-(4-Bromo-3,5-dimethyl-1H-pyrazol-1-yl)-6-chloropyridine
3,7-bis(dimethylamino)-5,5-dimethyldibenzo[b,e]silin-10(5H)-one
5,6,7,8-Tetrahydro-1,6-naphthyridin-3-ol
LATANOPROSTENE BUNOD
(3-chloropropyl)(3,4-dimethoxyphenethyl)methylammonium hydrogen oxalate
4-(2-(2-METHOXY-4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN
[4-(4,9-diethoxy-1-oxo-1,3-dihydro-2H-benzo[f]isoindol-2-yl)phenyl]acetic acid