Trimethyl phosphite
ALDRICH/240907 - ≥99%
Synonym: Methyl phosphite; P(OMe)3; Trimethoxyphosphine
CAS Number: 121-45-9
Empirical Formula (Hill Notation): C3H9O3P
Molecular Weight: 124.08
EC Number: 204-471-5
MDL Number: MFCD00008350
Linear Formula: (CH3O)3P
Product Type: Chemical
| assay | ≥99% |
| bp | 111-112 °C (lit.) |
| density | 1.052 g/mL at 25 °C (lit.) |
| form | liquid |
| InChI | 1S/C3H9O3P/c1-4-7(5-2)6-3 |
| InChI key | CYTQBVOFDCPGCX-UHFFFAOYSA |
| mp | −78 °C (lit.) |
| Quality Level | 200 ![]() |
| reaction suitability | reagent type: ligand reaction type: Heck Reaction |
| reagent type: ligand reaction type: Suzuki-Miyaura Coupling |
|
| refractive index | n |
| SMILES string | COP(OC)OC |
| vapor density | 4.3 (vs air) |
| vapor pressure | 17 mmHg ( 20 °C) |
| Application: | Trimethyl phosphite can be used as a ligand in the synthesis of allyliridium phosphite complexes by direct reaction with allyliridium 1,5-cyclooctadiene complex. |
| General description: | Trimethyl phosphite is an organophosphorus compound commonly used as a polymerization catalyst, coating additive, and as an intermediate in the synthesis of flame retardants. In addition, it is also used as an activating reagent in amide formation. |
| Packaging: | 25, 100 g in glass bottle |
| Symbol | ![]() GHS02,GHS07 |
| Signal word | Warning |
| Hazard statements | H226 - H302 - H315 - H319 - H335 |
| Precautionary statements | P210 - P233 - P240 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338 |
| Hazard Codes | Xn |
| Risk Statements | 10-22-37/38-41 |
| Safety Statements | 26-39 |
| RIDADR | UN 2329 3 / PGIII |
| WGK Germany | WGK 1 |
| Flash Point(F) | 82.4 °F - closed cup |
| Flash Point(C) | 28 °C - closed cup |
| Supplemental Hazard Statements | EUH014 |
| Purity | ≥99% |
| bp | 111-112 °C (lit.) |
| mp | −78 °C (lit.) |
| Density | 1.052 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12352108 |



