Skip to Content
MilliporeSigma
All Photos(1)

Key Documents

View All Documentation

T79707

Sigma-Aldrich

Trimethyl phosphite

97%

Synonym(s):

Methyl phosphite, P(OMe)3, Trimethoxyphosphine

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
(CH3O)3P
CAS Number:
121-45-9
Molecular Weight:
124.08
Beilstein/REAXYS Number:
956570
EC Number:
204-471-5
MDL number:
MFCD00008350
UNSPSC Code:
12352100
PubChem Substance ID:
24900488

vapor density

4.3 (vs air)

vapor pressure

17 mmHg ( 20 °C)

assay

97%

form

liquid

impurities

≤0.5% trimethyl phosphate

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

Looking for similar products? Visit Product Comparison Guide

pictograms

FlameExclamation mark
GHS02,GHS07

signalword

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_germany

WGK 1

flash_point_f

82.4 °F - closed cup

flash_point_c

28 °C - closed cup

ppe

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

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCBK2547V
BCBG7218V
BCBG4301V
MKBC4337V
1412690V

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

Slide 1 of 1

1 of 1

Triethyl phosphate ReagentPlus®, ≥99.8%

Sigma-Aldrich

538728

Triethyl phosphate

D H Barton et al.
Bioorganic & medicinal chemistry, 2(4), 259-266 (1994-04-01)
In harmony with our studies on the activation of hydrocarbons by Gif chemistry, we have, in the first part of this paper, studied the mechanism of the lipoxygenase enzymes using soybean lipoxygenase as a model. We have shown with trimethyl
Bangwei Ding et al.
Journal of the American Chemical Society, 125(11), 3248-3259 (2003-03-13)
Trimethyl phosphite, (MeO)(3)P, is introduced as an efficient and selective trap in oxiranylcarbinyl radical (2) systems, formed from haloepoxides 8-13 under thermal AIBN/n-Bu(3)SnH conditions at about 80 degrees C. Initially, the transformations of 8-13, in the absence of phosphite, to
Shinichi Yamabe et al.
The journal of physical chemistry. A, 114(43), 11699-11707 (2010-10-15)
Density functional theory calculations of the title reaction, P(OCH₃)₃ + (H₂O)(n) in CH₃CN, were conducted, where n is the number of water molecules. Two routes, the routes suggested by (A) Aksnes and (B) Arbuzov, were traced with various n values.
Tian-lin Zhang et al.
Guang pu xue yu guang pu fen xi = Guang pu, 24(11), 1334-1337 (2005-03-15)
The reactions of unsaturated chloride polyether polyol with trimethyl phosphite have been studied by FTIR, which was prepared by copolymerization of ethanediol, allyl glycidyl ether and epoxychloropropane. The experimental results showed that the reaction included ester-exchange reaction, ester-exchange polymerization and
D Vaughan Griffiths et al.
Organic & biomolecular chemistry, 6(3), 577-585 (2008-01-26)
Dialkyl heteroaroylphosphonates based on thiophene, pyrrole or furan have been prepared and their reactions with trimethyl phosphite investigated. Deoxygenation of the carbonyl groups in these heteroaroylphosphonates occurs to give carbene intermediates, which then undergo further reaction. In the case of
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service