N,O-Bis(trimethylsilyl)trifluoroacetamide with trimethylchlorosilane
SIAL/15209 - derivatization grade (GC derivatization), LiChropur™, contains 10% TMCS, 98% (excluding TMCS)
Synonym: BSTFA + TMCS
CAS Number: 25561-30-2
Empirical Formula (Hill Notation): C8H18F3NOSi2
Molecular Weight: 257.40
MDL Number: MFCD00008269
Linear Formula: CF3C[=NSi(CH3)3]OSi(CH3)3
Product Type: Chemical
| assay | ≥97.5% (excluding TMCS, GC) |
| 98% (excluding TMCS) | |
| bp | 45-50 °C/14 mmHg (lit.) |
| density | 0.97 g/mL (lit.) |
| form | liquid |
| grade | derivatization grade (GC derivatization) |
| impurities | 9.0-11.0% TMCS |
| InChI | 1S/C8H18F3NOSi2/c1-14(2,3 |
| InChI key | XCOBLONWWXQEBS-KPKJPENVSA |
| quality | LiChropur™ |
| Quality Level | 100 ![]() |
| reaction suitability | reagent type: derivatization reagent reaction type: Silylations |
| refractive index | n |
| SMILES string | C[Si](C)(C)OC(=N[Si](C) |
| technique(s) | gas chromatography (GC): suitable |
| Application: |
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| General description: | N,O-Bis(trimethylsilyl)tr |
| Legal Information: | LiChropur is a trademark of Merck KGaA, Darmstadt, Germany |
| Other Notes: | The position of the silyl groups has not been unequivocally established. It has been referred to as both N,N and N,O. |
| Packaging: | 10×1 mL in ampule |
| Packaging: | 5 mL in glass bottle |
| Symbol | ![]() ![]() GHS02,GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H225 - H302 - H314 |
| Precautionary statements | P210 - P233 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338 |
| Hazard Codes | F,C |
| Risk Statements | 11-14-35 |
| Safety Statements | 16-26-36/37/39-45 |
| RIDADR | UN 2924 8(3) / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 15.8 °F - closed cup |
| Flash Point(C) | -9 °C - closed cup |
| Purity | ≥97.5% (excluding TMCS, GC); 98% (excluding TMCS) |
| bp | 45-50 °C/14 mmHg (lit.) |
| Density | 0.97 g/mL (lit.) |
| Refractive Index | n |
| UNSPSC | 41116105 |




