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240907

Trimethyl phosphite

≥99%, liquid

Synonym(s):

Methyl phosphite, P(OMe)3, Trimethoxyphosphine

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About This Item

Linear Formula:
(CH3O)3P
CAS Number:
121-45-9
Molecular Weight:
124.08
NACRES:
NA.22
PubChem Substance ID:
24854442
UNSPSC Code:
12352108
EC Number:
204-471-5
MDL number:
MFCD00008350
Beilstein/REAXYS Number:
956570
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Product Name

Trimethyl phosphite, ≥99%

vapor density

4.3 (vs air)

Quality Segment

vapor pressure

17 mmHg ( 20 °C)

assay

≥99%

form

liquid

reaction suitability

reagent type: ligand
reaction type: Heck Reaction, reagent type: ligand
reaction type: Suzuki-Miyaura Coupling

refractive index

n20/D 1.408 (lit.)

bp

111-112 °C (lit.)

mp

−78 °C (lit.)

density

1.052 g/mL at 25 °C (lit.)

SMILES string

COP(OC)OC

InChI

1S/C3H9O3P/c1-4-7(5-2)6-3/h1-3H3

InChI key

CYTQBVOFDCPGCX-UHFFFAOYSA-N

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.

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.

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Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Warning

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

supp_hazards

EUH014

Storage Class

3 - Flammable liquids

WGK

WGK 1

Flash Point (°F)

82.4 °F - closed cup

Flash Point (°C)

28 °C - closed cup

PPE (personal protective equipment)

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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