Bis(trimethylsilyl)sulfur
Hexamethyldisilathiane
CAS: 3385-94-2
Molecular Formula: C6H18SSi2
Bis(trimethylsilyl)sulfur - Names and Identifiers
Bis(trimethylsilyl)sulfur - Physico-chemical Properties
| Molecular Formula | C6H18SSi2 |
| Molar Mass | 178.44 |
| Density | 0.846g/mLat 25°C(lit.) |
| Boling Point | 164°C(lit.) |
| Flash Point | 79°F |
| Water Solubility | Soluble in tetrahydrofuran and toluene. Hydrolyzes in water. |
| Solubility | Miscible with terahydrofuran and toluene. |
| Appearance | Liquid |
| Specific Gravity | 0.851 |
| Color | Colorless |
| BRN | 1740046 |
| Storage Condition | Flammables area |
| Stability | store cold |
| Sensitive | Air Sensitive |
| Refractive Index | n20/D 1.4586(lit.) |
Bis(trimethylsilyl)sulfur - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R10 - Flammable R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. |
| Safety Description | S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 10-13-21 |
| TSCA | Yes |
| HS Code | 29319090 |
| Hazard Class | 3 |
| Packing Group | II |
Bis(trimethylsilyl)sulfur - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Overview | Bis (trimethylsilyl) sulfide is an organosilicide, an organic intermediate, referred to as HMDT. |
| preparation | bis (trimethylsilyl) sulfide can be prepared by Li2S and TMS chloride in one step. the specific steps are: adding TMS chloride (50.8 mL,0.40 mol) to the magnetic stirring suspension of anhydrous Li2S(9.19g,0.20 mol) in anhydrous THF(40 ml). The mixture was stirred under dry argon for 25 hours, at which time GC analysis of aliquots of the supernatant showed bis (trimethylsilyl) sulfide (87%), siloxane (4.1%) and unreacted TMS chloride (9.2%). The reaction flask is equipped with a small Vigreaux column with a vacuum jacket and distilled to remove THF under argon. Then reduce the pressure, after a short distillation, the bis (trimethylsilyl) sulfide is collected as a clear colorless liquid (29.7g,83%). |
Last Update：2024-04-10 22:29:15
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