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Merck

132195

Trimethyl phosphate

97%

Synonym(s):

TMP, TMPA, TMPO

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About This Item

Linear Formula:
(CH3O)3PO
CAS Number:
Molecular Weight:
140.07
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
208-144-8
Beilstein/REAXYS Number:
1071731
MDL number:
Assay:
97%
Form:
liquid
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Quality Segment

assay

97%

form

liquid

refractive index

n20/D 1.395 (lit.)

bp

197 °C (lit.)

mp

−46 °C (lit.)

density

1.197 g/mL at 25 °C (lit.)

functional group

phosphate

SMILES string

COP(=O)(OC)OC

InChI

1S/C3H9O4P/c1-5-8(4,6-2)7-3/h1-3H3

InChI key

WVLBCYQITXONBZ-UHFFFAOYSA-N

General description

Trimethyl phosphate is an excellent dipolar aprotic solvent that is used as a methylating agent and acid scavenger in many organic transformations.

Application

Trimethyl phosphate can be used as a methylating agent for the:
  • Solvent-free o-methylation of phenolic compounds to synthesize methyl aryl ethers.
  • S-methylation of aryl/alkyl thiols to synthesize S-methylated product in the presence of Ca(OH)2 as a base.


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pictograms

Health hazardExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Carc. 2 - Eye Irrit. 2 - Muta. 1B - Skin Irrit. 2

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 1

flash_point_f

302.0 °F - closed cup

flash_point_c

150 °C - closed cup

ppe

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



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