107-46-0
| Name | Hexamethyldisiloxane |
| CAS | 107-46-0 |
| EINECS(EC#) | 203-492-7 |
| Molecular Formula | C6H18OSi2 |
| MDL Number | MFCD00008265 |
| Molecular Weight | 162.38 |
| MOL File | 107-46-0.mol |
Chemical Properties
| Appearance | Colorless or yellowish transparent liquid |
| Melting point | −59 °C(lit.) |
| Boiling point | 101 °C(lit.) |
| density | 0.764 g/mL at 20 °C(lit.) |
| vapor density | >1 (vs air) |
| vapor pressure | 20 hPa (20 °C) |
| refractive index | n |
| Fp | 33 °F |
| storage temp. | Flammables area |
| solubility | 0.00037g/l insoluble |
| form | liquid |
| color | Colorless to Almost colorless |
| Specific Gravity | 0.76 |
| Stability: | Stable, but moisture sensitive. Highly flammable. Incompatible with strong acids, strong bases, oxidizing agents. |
| explosive limit | 0.5-21.8%(V) |
| Water Solubility | insoluble |
| Specific Heat Capacity | Cp(liquid):311.4J/(g·K);Cp(gas):1.46878J/(g·K),at 25℃ |
| Hydrolytic Sensitivity | 1: no significant reaction with aqueous systems |
| Detection Methods | GC,NMR |
Safety Data
| Symbol(GHS) |   GHS02,GHS09 |
| Signal word | Danger |
| Hazard statements | H225-H410 |
| Precautionary statements | P210-P273 |
| Hazard Codes | F |
| Risk Statements | |
| Safety Statements | |
| RIDADR | UN 1993 3/PG 2 |
| WGK Germany | 3 |
| RTECS | JM9237000 |
| F | 10 |
| Autoignition Temperature | 340 °C |
| TSCA | Yes |
| REACH Registrations | Active |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29310095 |
| Storage Class | 3 - Flammable liquids |
| Hazard Classifications | Aquatic Acute 1 Aquatic Chronic 1 Flam. Liq. 2 |
| Hazardous Substances Data | 107-46-0(Hazardous Substances Data) |
| Toxicity |