PRODUCT Properties
| Melting point: | −38 °C(lit.) |
| Boiling point: | 78-80 °C(lit.) |
| Density | 0.898 g/mL at 25 °C(lit.) |
| refractive index | n |
| Flash point: | 16 °F |
| storage temp. | Flammables area |
| solubility | Chloroform (Sparingly), Dichloromethane (Slightly), THF (Soluble) |
| form | Solution |
| color | Colorless to yellow |
| Water Solubility | Not miscible in water. |
| Sensitive | Moisture Sensitive & Hygroscopic |
| BRN | 1757008 |
| Exposure limits | ACGIH: TWA 50 ppm; STEL 100 ppm (Skin) OSHA: TWA 200 ppm(590 mg/m3) NIOSH: IDLH 2000 ppm; TWA 200 ppm(590 mg/m3); STEL 250 ppm(735 mg/m3) |
| InChIKey | GBBSAMQTQCPOBF-UHFFFAOYSA-N |
| CAS DataBase Reference | 823-96-1(CAS DataBase Reference) |
Description and Uses
Trimethylboroxine (TMB) is a cyclic anhydride of methyl-boronic acid. It can be used as a:
- Methylating agent for the methylation of various aromatic halides and C(sp3)?H bonds using palladium catalyst.
- Reagent in the preparation of polymer supported CBS (Corey, Bakshi, and Shibata) catalysts.
Safety
| Symbol(GHS) |     GHS02,GHS05,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H225-H314-H335-H351 |
| Precautionary statements | P201-P210-P233-P261-P280-P370+P378 |
| Hazard Codes | F,C,Xi |
| Risk Statements | 11-34-41-37/38-19 |
| Safety Statements | 9-16-26-33-36/37/39-45-46-37/39-3 |
| RIDADR | UN 2924 3/PG 2 |
| WGK Germany | 3 |
| F | 2-10-21 |
| TSCA | Yes |
| HazardClass | 3.1 |
| PackingGroup | II |
| HS Code | 29319090 |
| Limited Quantities | 1.0 L (0.3 gallon) (liquid) |
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml) |
