N,N'-bis(Trimethylsilyl)urea
CAS: 18297-63-7
Category: Organosilicon Compounds
| Purity | Reagent Grade ≥95%, High-Purity Grade ≥98% |
| Molecular Formula | C7H20N2OSi2 |
| Molecular Weight | 204.42 |
| Appearance | White to off-white crystalline powder |
| Packaging | 25 g/glass bottle, 100 g/glass bottle, or 25 kg/polyethylene-lined fiber drum |
| Testing Indicators | Appearance — Visual inspection; Melting point — Capillary method (GB/T 617); Purity — HPLC or GC; Identification — FTIR (C=O ~1680 cm⁻¹, Si–N ~850 cm⁻¹), NMR; Moisture — Karl Fischer titration; Si–N integrity — ¹H NMR (SiMe₃ ~0 ppm). |
| Storage Notes | Store in a cool, dark, and well-ventilated place (often recommended <15℃). It is moisture-sensitive and should be kept in a tightly closed container under an inert gas atmosphere. |
| Lead Time | Deprecated: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated in /www/wwwroot/www.demeichem.com/config/helpers.php on line 28 days |
Used as a silylating reagent in organic synthesis for the protection or derivatization of functional groups, similar to HMDS but often providing high reactivity. It's used in the development of pharmaceuticals, agrochemicals, and for the preparation of silicone-based materials.