Cookies disclaimer

I agree Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our website without changing the browser settings you grant us permission to store that information on your device.

L15607 Eaton's Reagent, P2O5 ca 7.5% w/w

CAS Number
Phosphorus pentoxide, 7.5 wt % in methanesulfonic acid

Stock No. Size Price ($) Quantity Availability
L15607-AE 100ml 38.20
L15607-AP 500ml 137.00
Add to Cart Add to Quote Request View Item

Eaton's Reagent, P2O5 ca 7.5% w/w


Chemical Properties

Formula Weight
Flash Point
Refractive Index
Storage & Sensitivity
Moisture Sensitive. May form a Precipitate. Store under Argon. Ambient temperatures.
Decomposes in water.


Eaton's Reagent is used in the synthesis fluorine-based hole-transporting material, mono and bis-chalcone derivatives via Claisen-Schmidt condensation reaction between arylaldehydes and ketones and 4-hydroxycoumarins and 4-hydroxy-2-quinolinones derivatives.


Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage.

Literature References

Luckner G. Ulysse.; Qiang Yang.; Mark D. McLaws.; Daniel K. Keefe.; Peter R. Guzzo.; Brian P. Haney. Process Development and Pilot-Scale Synthesis of New Cyclization Conditions of Substituted Phenylacetamides to Tetrahydroisoquinoline-2-ones Using Eaton’s Reagent. Org. Process Res. Dev. 2010, 14 (1), 225-228.

Rex X Ren.; Larisa D Zueva.; Wei Ou. Formation of ε-caprolactam via catalytic Beckmann rearrangement using P2O5 in ionic liquids. Tetrahedron Letters. 2001, 42 (48), 8441-8443.

Lower viscosity alternative to polyphosphoric acid for dehydration and cyclization reactions. Gives high yields in the Beckmann rearrangement: J. Org. Chem., 35, 4071 (1973). For an example of cyclodehydration, see: J. Chem. Soc., Perkin 1, 2956 (1981).

For further examples and discussion of the utility of this reagent, see: Encyclopedia of Reagents for Organic Synthesis, L. A. Paquette, Ed., Wiley, Chichester (1995), vol. 6, p. 4129.

GHS Hazard and Precautionary Statements

Hazard Statements: H302-H314-H318

Harmful if swallowed. Causes severe skin burns and eye damage. Causes serious eye damage.

Precautionary Statements: P260u-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501a

Do not breathe dusts or mists. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


Recently Viewed


Life Science

Metals & Materials


Analytical & Labware