Hexamethyldisiloxane
ALDRICH/205389 - ≥98%
Synonym: HMDSO
CAS Number: 107-46-0
Empirical Formula (Hill Notation): C6H18OSi2
Molecular Weight: 162.38
EC Number: 203-492-7
MDL Number: MFCD00008265
Linear Formula: (CH3)3SiOSi(CH3)3
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 205389-100ML.
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 205389-500ML.
| assay | ≥98% |
| bp | 101 °C |
| 101 °C (lit.) | |
| density | 0.764 g/mL at 20 °C (lit.) |
| form | liquid |
| InChI | 1S/C6H18OSi2/c1-8(2,3)7-9 |
| InChI key | UQEAIHBTYFGYIE-UHFFFAOYSA |
| mp | −59 °C (lit.) |
| Quality Level | 200  |
| refractive index | n |
| SMILES string | C[Si](C)(C)O[Si](C)(C)C |
| vapor density | >1 (vs air) |
| Application: | Hexamethyldisiloxane can be used: • To fabricate a gas diffusion layer (GDL) with controlled hydrophobic silicone nano-layer by the dry deposition process. • To prepare silver nanoparticles coated with silica using arginine and glucose as the catalyst and the reducing agent, respectively. |
| General description: | Hexamethyldisiloxane (HMDSO), a linear polydisiloxane, is an organosilicon reagent commonly utilized as a source for plasma enhanced chemical vapor deposition (PE-CVD) of thin films of silicon compounds. It is also employed as a substitute to silane in silicon integrated circuit technology. Its dissociative ionization by electron impact has been studied by Fourier transform mass spectrometry. Synthesis of plasma-polymerized HMDSO thin films by atmospheric pressure glow (APG) discharge has been reported. Crystals of HMDSO at 148K are monoclinic. Addition of HMDSO to P4S10, improves its efficiency as thionating agent. |
| Packaging: | 5, 100, 500 mL in glass bottle |
| Symbol |   GHS02,GHS09 |
| Signal word | Danger |
| Hazard statements | H225 - H410 |
| Precautionary statements | P210 - P273 |
| Hazard Codes | F,N |
| Risk Statements | 11-50/53 |
| Safety Statements | 16-61 |
| RIDADR | UN1993 - class 3 - PG 2 - EHS - VP <= 110kPa - Flammable liquids |
| WGK Germany | WGK 2 |
| Flash Point(F) | 21.2 °F - closed cup |
| Flash Point(C) | -6 °C - closed cup |
| Purity | ≥98% |
| bp | 101 °C (lit.); 101 °C |
| mp | −59 °C (lit.) |
| Density | 0.764 g/mL at 20 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352103 |