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Merck
CN

D178454

Dimethyl phosphite

98%

Synonym(s):

Dimethoxyphosphine oxide, Dimethyl hydrogen phosphite, Dimethyl hydrogen phosphonate, Dimethyl phosphonate, Hydrogen dimethyl phosphite

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About This Item

Linear Formula:
(CH3O)2P(O)H
CAS Number:
Molecular Weight:
110.05
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
212-783-8
Beilstein/REAXYS Number:
1697490
MDL number:
Assay:
98%
Form:
liquid
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Quality Level

assay

98%

form

liquid

impurities

≤0.5% trimethyl phosphate, ≤1% methyl alcohol

refractive index

n20/D 1.402 (lit.)

bp

170-171 °C (lit.)

density

1.2 g/mL at 25 °C (lit.)

SMILES string

[H]P(=O)(OC)OC

InChI

1S/C2H7O3P/c1-4-6(3)5-2/h6H,1-2H3

InChI key

HZCDANOFLILNSA-UHFFFAOYSA-N

Application

Dimethyl phosphite may be used as an effective alternative to organic tin hydrides as radical reducing agents for organic halides, thionoesters, and isocyanides to form the corresponding hydrocarbons. Radical translocation/cyclization reactions of terminal alkynes to form cyclic phosphonates can also be effectively carried using dimethyl phosphite as a reagent under tin-free condition.
Dimethyl phosphite is used in the synthesis of α-aminophosphonates, which are medicinally important phosphorus analogs of amino acids, by treating with an amine and an aldehyde or a ketone. It can also be employed in asymmetric hydrophosphonylation of aldehydes to synthesize optically active α-hydroxy phosphonates.


pictograms

Health hazardExclamation mark

signalword

Warning

Hazard Classifications

Aquatic Chronic 3 - Carc. 2 - Muta. 2 - Skin Sens. 1

Storage Class

10 - Combustible liquids

wgk

WGK 1

flash_point_f

158.0 °F - closed cup

flash_point_c

70 °C - closed cup

ppe

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

Regulatory Information

监管及禁止进口产品

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Zirconium (IV) compounds as efficient catalysts for synthesis of α-aminophosphonates.
Bhagat S and Chakraborti A K
The Journal of Organic Chemistry, 73(15), 6029-6032 (2008)
Microwave-assisted solvent-free and catalyst-free Kabachnik?Fields reactions for α-amino phosphonates.
Mu X J, et al.
Tetrahedron Letters, 47(7), 1125-1127 (2006)
I Pastirk et al.
The journal of physical chemistry. A, 109(11), 2413-2416 (2006-07-13)
Multidimensional chemical detection and identification based on phase shaped femtosecond laser pulses coupled to mass spectrometry is demonstrated. The method based on binary phase shaping (BPS) takes into account the accuracy and precision standards required by analytical chemistry. It couples



Global Trade Item Number

SKUGTIN
D178454-500G04061833560747
D178454-25G04061833560730