POLY(DIMETHYLSILOXANE), 200(R) FLUID
Octamethyltrisiloxane
CAS: 107-51-7
Molecular Formula: C8H24O2Si3
POLY(DIMETHYLSILOXANE), 200(R) FLUID - Names and Identifiers
| Name | Octamethyltrisiloxane |
| Synonyms | CO9816 CCRIS 3198 METHYLPOLYSILOXANE [(CH3)3SiO]2Si(CH3)2 OCTAMETHYLTRISILOXANE Octamethyltrisiloxane Trisiloxane, octamethyl- POLY(DIMETHYLSILOXANE), 200(R) FLUID DIMETHYLBIS(TRIMETHYLSILYLOXY)SILANE 1,1,1,3,3,5,5,5-Octamethyltrisiloxane Trisiloxane, 1,1,1,3,3,5,5,5-octamethyl- POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED |
| CAS | 107-51-7 |
| EINECS | 203-497-4 |
| InChI | InChI=1/C8H24O2Si3/c1-11(2,3)9-13(7,8)10-12(4,5)6/h1-8H3 |
POLY(DIMETHYLSILOXANE), 200(R) FLUID - Physico-chemical Properties
| Molecular Formula | C8H24O2Si3 |
| Molar Mass | 236.53 |
| Density | 0.82 g/mL at 25 °C (lit.) |
| Melting Point | -82 °C (lit.) |
| Boling Point | 153 °C (lit.) |
| Flash Point | 99°F |
| Water Solubility | 34μg/L at 23℃ |
| Solubility | Chloroform (Slightly), DMSO, Methanol (Slightly) |
| Vapor Presure | 5.3hPa at 25℃ |
| Vapor Density | >1 (vs air) |
| Appearance | liquid |
| Specific Gravity | 0.82 |
| Color | Colourless to Pale Yellow |
| Merck | 14,6748 |
| BRN | 1753063 |
| Storage Condition | Inert atmosphere,Room Temperature |
| Stability | Hygroscopic |
| Sensitive | 1: no significant reaction with aqueous systems |
| Refractive Index | n20/D 1.384(lit.) |
POLY(DIMETHYLSILOXANE), 200(R) FLUID - Risk and Safety
| Risk Codes | 10 - Flammable |
| Safety Description | S23 - Do not breathe vapour. S24/25 - Avoid contact with skin and eyes. |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 10-21 |
| TSCA | Yes |
| HS Code | 29319090 |
| Hazard Class | 3.2 |
| Packing Group | III |
POLY(DIMETHYLSILOXANE), 200(R) FLUID - Reference Information
| LogP | 6.6 at 25.3℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| trait | transparent colorless liquid |
| preparation | synthesis of polyether-modified polysiloxane copolymer the hydrogen-containing silicone oil was condensed and grafted with Polyether under the action of catalyst by condensation method. In a four-port flask equipped with a stirrer, condenser, thermometer and hydrogen gas discharge device, add hydrogen-containing silicone oil, Polyether, solvent and catalyst in proportion, start the stirrer and slowly heat to a certain temperature, at this time, hydrogen gas escapes to generate bubbles. When the conversion rate reaches a certain value, the temperature is lowered, the alkali is added for neutralization, and the residual catalyst and solvent are removed by Suction filtration and vacuum distillation to obtain the polyether-modified polysiloxane copolymer. Octamethyltrisiloxane was prepared by nitrile condensation reaction using polydimethylsiloxane and octamethylcyclotetrasiloxane as starting materials. |
Last Update：2024-04-09 21:04:16
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