Trimethyl borate
ALDRICH/443999 - purified by redistillation, ≥99.5%
Synonym: Boric acid trimethyl ester; Methyl borate
CAS Number: 121-43-7
Empirical Formula (Hill Notation): C3H9BO3
Molecular Weight: 103.91
EC Number: 204-468-9
MDL Number: MFCD00008346
Linear Formula: B(OCH3)3
Product Type: Chemical
| assay | ≥99.5% |
| bp | 68-69 °C (lit.) |
| density | 0.932 g/mL at 20 °C (lit.) |
| form | liquid |
| InChI | 1S/C3H9BO3/c1-5-4(6-2)7-3 |
| InChI key | WRECIMRULFAWHA-UHFFFAOYSA |
| mp | −34 °C (lit.) |
| purified by | redistillation |
| Quality Level | 200  |
| refractive index | n |
| SMILES string | COB(OC)OC |
| vapor density | 3.59 (vs air) |
| Application: | Trimethyl borate can be used as: • A reagent in the preparation of various trialkylamine−boranes from corresponding trialkylamines using lithium hydride/aluminum chloride catalyst. • A source of boron in the synthesis of boron nitride (BN) nanotubes by thermal-heating chemical vapor deposition (TH-CVD) method. • An electrolytic additive for electrochemical applications. • A reagent along with lithium di-tert-butyl(2,2,6,6-tetramethy |
| Packaging: | 1 L in Sure/Seal™ |
| Packaging: | 100 mL in Sure/Seal™ |
| Symbol |    GHS02,GHS06,GHS08 |
| Signal word | Danger |
| Hazard statements | H225 - H301 + H311 + H331 - H319 - H360FD - H370 |
| Precautionary statements | P210 - P280 - P301 + P310 - P303 + P361 + P353 - P304 + P340 + P311 - P305 + P351 + P338 |
| Hazard Codes | T |
| Risk Statements | 60-61-11-21-36 |
| Safety Statements | 53-23-25-26-45 |
| RIDADR | UN 2416 3 / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | 12.2 °F - (own results) |
| Flash Point(C) | -11 °C - (own results) |
| Purity | ≥99.5% |
| bp | 68-69 °C (lit.) |
| mp | −34 °C (lit.) |
| Density | 0.932 g/mL at 20 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352103 |