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92730

Trimethyl phosphite

Name: Trimethyl phosphite
Brand: SIAL

≥97%, liquid

Synonym(s):

TMP, 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:

329770160

UNSPSC Code:

12350000

MDL number:

MFCD00008350

Beilstein/REAXYS Number:

956570

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Properties

Product Name

Trimethyl phosphite, ≥97%

vapor density

4.3 (vs air)

Quality Segment

200

vapor pressure

17 mmHg ( 20 °C)

assay

≥97%

form

liquid

refractive index

n20/D 1.408

bp

111-112 °C (lit.)

mp

−78 °C (lit.)

density

1.052 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

COP(OC)OC

InChI

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

InChI key

CYTQBVOFDCPGCX-UHFFFAOYSA-N

Description

Application

Trimethyl phosphite is an organophosphorus ester with flame retardant property. It is generally used as a ligand to form coordinate complexes with transition metals.
Some of its other applications include:

For N-alkylation of amino-9,10-anthraquinones in imidazolium-based ionic liquids without the use of base and highly polar organic solvents.
To synthesize dimethyl phenylphosphonate by reacting with phenyl radical generated by the thermal decomposition of phenylazotriphenylmethane (PAT).
To synthesize aryl phosphonates via P-arylation reaction with silyl triflates.

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Pictograms

GHS02,GHS08,GHS07

Signal Word

Warning

Hazard Codes

H226,H302,H315,H317,H319,H335,H341,H351

Precautionary Statements

P210 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338 - P308 + P313

Hazard Classifications

Acute Tox. 4 Oral - Carc. 2 - Eye Irrit. 2 - Flam. Liq. 3 - Muta. 2 - Skin Irrit. 2 - Skin Sens. 1 - 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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