Diethyl phosphite

technical grade, 94%

Linear Formula:
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.


technical grade

Quality Level



refractive index

n20/D 1.407 (lit.)


50-51 °C/2 mmHg (lit.)


1.072 g/mL at 25 °C (lit.)

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InChI key


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General description

Diethyl phosphite is reported to be chemical warfare agent (CWA) simulant, simulant for nerve agents sarin, soman, tabun, and VX.


Diethyl phosphite may be used to prepare the nickel chloride-diethyl phosphite system, efficient catalyst for the cross-coupling reaction between various functionalized arylzinc halides and aryl bromides, triflates and activated chlorides. It may be used:
  • in the stereoselective synthesis of β-fluorinated alkylphosphonates
  • in the synthesis of homoallylic bromide
  • in the synthesis of series of carbazole-based α-aminophosphonates


1 L in glass bottle


CorrosionExclamation mark

Signal Word


Hazard Statements

WGK Germany


Flash Point(F)

179.6 °F - closed cup

Flash Point(C)

82 °C - closed cup

Adam M Graichen et al.
Journal of the American Society for Mass Spectrometry, 24(6), 917-925 (2013-03-28)
The gas-phase reactions of a series of coordinatively unsaturated [Ni(L)n](y+) complexes, where L is a nitrogen-containing ligand, with chemical warfare agent (CWA) simulants in a miniature rectilinear ion trap mass spectrometer were investigated as part of a new approach to...
Wenke Qi et al.
The Journal of organic chemistry, 78(12), 5918-5924 (2013-05-22)
Cyclopropyl Grignard reagents react with carbonyl compounds in the presence of diethyl phosphite to give homoallylic bromides. The reaction is effectively carried out under mild conditions in a one-pot fashion with moderate to good yields.
Chengwei Zhang et al.
Journal of the American Chemical Society, 135(38), 14082-14085 (2013-09-13)
We report herein a mild and catalytic phosphonofluorination of unactivated alkenes. With catalysis by AgNO3, the condensation of various unactivated alkenes with diethyl phosphite and Selectfluor reagent in CH2Cl2/H2O/HOAc at 40 °C led to the efficient synthesis of β-fluorinated alkylphosphonates...
Andrei Gavryushin et al.
Organic letters, 7(22), 4871-4874 (2005-10-21)
[reaction: see text] The combination of diethyl phosphite and DMAP as ligands for nickel in an 8:1 THF-N-ethylpyrrolidinone (NEP) mixture allows a very efficient cross-coupling reaction to be performed between various functionalized arylzinc halides and aryl bromides, triflates and activated...
Anil Kumar Mungara et al.
Chemical & pharmaceutical bulletin, 60(12), 1531-1537 (2012-09-19)
A novel series of carbazole-based α-aminophosphonates were synthesized by three component coupling of 6-bromo-9-ethyl-9H-carbazole-3-carbaldehyde, amine and diethyl phosphite using polyethylene glycol (PEG-400) as a green reaction media. The antiproliferative activity of these molecules was evaluated against three cancer cell lines....

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