Silicone oil CAS#63148-62-9
Excellent Thermal Stability: Silicone oil features a highly stable silicon–oxygen bond, giving it strong resistance to thermal decomposition and enabling reliable performance across a wide temperature range.
Broad Operating Temperature Range: With a high boiling point and low freezing point, silicone oil remains liquid and functional in both high-heat and low-temperature environments.
Chemically Inert and Safe: It is colorless, odorless, and tasteless, making it chemically inert and suitable for applications requiring minimal reactivity or contamination risk.
High Purity and Structural Reliability: The linear polydimethylsiloxane structure ensures consistent molecular stability, providing dependable performance in industrial and technical applications
Silicone oil, which has a siloxane-based silica structure, remains liquid at room temperature and is generally referred to as a siloxane. The simplest form of polydimethylsiloxane corresponds to formula [1]. In formula [2], when R, R1, and R2 are all methyl groups, the compound is known as α,ω-trimethylsilyloxy polydimethylsiloxane, commonly referred to as silicone oil. This material is a low–molecular-weight linear polymer. If R1 or R2 is not a methyl group, it falls outside the scope of this discussion. Silicone oil appears as a colorless or pale yellow transparent liquid that is odorless and tasteless. It also features a high boiling point, a low freezing point, and excellent stability due to the strong silicon–oxygen bond.
| Product Name: | Silicone oil |
| Synonyms: | dimethylsiliconesandsiloxanes;dimethyl-siloxan;Dimethylsiloxanesandsilicones;dowcorning200;dowcorning200fluid;dowcorning360fluid;dowcorning561;ko08 |
| CAS: | 63148-62-9 |
| MF: | C6H18OSi2 |
| MW: | 162.38 |
| EINECS: | 613-156-5 |
| Product Categories: | Silicon oils;Polymer Science;Silicones;Essential Chemicals;Reagent Grade;Routine Reagents;Silane series;UVCBs-organic;Alphabetical Listings;G-HAlphabetic;H;HA -HTAnalytical Standards;NMR Reference Standards;NMRStable Isotopes;Spectroscopy;Stable Isotopes;Siloxanes;63148-62-9 |
| Mol File: | 63148-62-9.mol |
Silicone oil Chemical Properties
| Melting point | −59 °C(lit.) |
| Boiling point | 101 °C(lit.) |
| Density | 0.963 g/mL at 25 °C |
| Tg | -123 |
| Vapor density | >1 (vs air) |
| Vapor pressure | <5 mm Hg ( 25 °C) |
| Refractive index | n |
| Fp | >270 °C (518 °F) |
| Storage temp | 2-8°C |
| Solubility | Chloroform (Slightly), Ethyl Acetate (Sparingly), Toluene (Sparingly) |
| Form | Oily Liquid |
| Specific Gravity | 0.853 |
| Color | Clear colorless |
| Odor | Odorless |
| Water Solubility | PRACTICALLY INSOLUBLE |
| Merck | 14,8495 |
| Dielectric constant | 2.7（Ambient） |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| EPA Substance Registry System | Dimethyl siloxanes and silicones (63148-62-9) |
