Potassium bis(trimethylsilyl)amide solution
ALDRICH/277304 - 0.5 M in toluene
Synonym: Hexamethyldisilazane potassium salt solution; Potassium hexamethyldisilazide solution
CAS Number: 40949-94-8
Empirical Formula (Hill Notation): C6H18KNSi2
Molecular Weight: 199.48
MDL Number: MFCD00010330
Linear Formula: [(CH3)3Si]2NK
Product Type: Chemical
| color | clear to slightly hazy yellow |
| concentration | 0.5 M in toluene |
| density | 0.877 g/mL at 25 °C |
| form | liquid |
| InChI | 1S/C6H18NSi2.K/c1-8(2,3)7 |
| InChI key | IUBQJLUDMLPAGT-UHFFFAOYSA |
| Quality Level | 200 ![]() |
| SMILES string | C[Si](C)(C)N([K])[Si](C)( |
| vapor density | 3.2 (vs air) |
| vapor pressure | 54 mmHg ( 25 °C) |
| Application: | Strong base used in the alkylation carbonyl compounds. |
| Legal Information: | Sure/Seal is a trademark of Sigma-Aldrich Co. LLC |
| Packaging: | 2 L in Sure/Seal™ |
| Packaging: | 4×25, 100, 800 mL in Sure/Seal™ |
| Packaging: | The 25 mL Sure/Seal™ bottle is recommended as a single-use bottle. Repeated punctures will likely result in decreased performance of product. |
| Symbol | ![]() ![]() ![]() GHS02,GHS05,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H225 - H304 - H314 - H336 - H361d - H373 - H412 |
| Precautionary statements | P210 - P280 - P301 + P310 + P331 - P301 + P330 + P331 - P303 + P361 + P353 - P305 + P351 + P338 + P310 |
| Hazard Codes | F,C |
| Risk Statements | 63-11-14-34-48/20-65-67 |
| Safety Statements | 16-26-36/37/39-45-62 |
| RIDADR | UN 2924 8(3) / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 44.6 °F - closed cup |
| Flash Point(C) | 7 °C - closed cup |
| Density | 0.877 g/mL at 25 °C |
| UNSPSC | 12352111 |





