BIS(TRIMETHYLSILYL)UREA
1,3-Bis(trimethylsilyl)urea
CAS: 18297-63-7
Molecular Formula: C7H20N2OSi2
BIS(TRIMETHYLSILYL)UREA - Names and Identifiers
| Name | 1,3-Bis(trimethylsilyl)urea |
| Synonyms | BSU Urea, TMS Hexamethyl disilaurea BIS(TRIMETHYLSILYL)UREA 1,1-bis(trimethylsilyl)urea 1,3-Bis(trimethylsilyl)urea Ureylenebis(trimethylsilane) N,N'-BIS(TRIMETHYLSILYL)UREA Urea, N,N'-bis(trimethylsilyl)- Bis-(Trimethylsilyl)-Urea (BSU) |
| CAS | 18297-63-7 |
| EINECS | 242-177-9 |
| InChI | InChI=1/C7H20N2OSi2/c1-11(2,3)9(7(8)10)12(4,5)6/h1-6H3,(H2,8,10) |
| InChIKey | MASDFXZJIDNRTR-UHFFFAOYSA-N |
BIS(TRIMETHYLSILYL)UREA - Physico-chemical Properties
| Molecular Formula | C7H20N2OSi2 |
| Molar Mass | 204.42 |
| Density | 0.887 |
| Melting Point | 219-221°C(lit.) |
| Boling Point | 222°C |
| Flash Point | 65°C |
| Water Solubility | Reacts with water. |
| Solubility | pyridine: soluble100mg/mL, clear to slightly hazy, colorless to light yellow |
| Vapor Presure | 0.002-1850Pa at 25℃ |
| Appearance | solid |
| Color | White to Almost white |
| BRN | 1937452 |
| pKa | 16.51±0.46(Predicted) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Sensitive | 7: reacts slowly with moisture/water |
| Refractive Index | 1.442 |
| Use | It is an excellent silanization reagent, which can replace active hydrogen atoms in organic molecules with trimethylsilyl radicals |
BIS(TRIMETHYLSILYL)UREA - Risk and Safety
| Risk Codes | R11 - Highly Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S14 - Keep away from ... (a list of incompatible materials will follow). S16 - Keep away from sources of ignition. S24/25 - Avoid contact with skin and eyes. S36 - Wear suitable protective clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 1325 4.1/PG 2 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 3-10-21 |
| TSCA | Yes |
| HS Code | 29310095 |
BIS(TRIMETHYLSILYL)UREA - Reference Information
| LogP | -2.11-2.72 at 20℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | is an excellent silanization reagent, which can replace active hydrogen atoms in organic molecules with trimethylsilyl radicals. This product is the most ideal silanization protective agent in the synthesis of β-lactam antibiotics. The silanization reagent can be used in the production of cefamikacin (cephalosporin IV) and cephalosporin VI. |
Last Update：2024-04-10 22:29:15
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