Diethyl ether peroxide
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3D model (JSmol)
|Molar mass||106.12 g/mol|
|Boiling point||62 to 64 °C (144 to 147 °F; 335 to 337 K) at 18.7 hPa (reduced pressure)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Diethyl ether hydroperoxide
Diethyl ether hydroperoxide (CH3-CH2-O-CH(OOH)-CH3) is a colorless liquid of low viscosity with a pleasant smell. Upon heating it weakly deflagrates, resulting in a fog of acetic acid and water. Diethyl ether hydroperoxide decomposes in the presence of sodium hydroxide and Fe2+-containing salts.
Diethyl ether peroxide, also known as ethylidene peroxide, (-CH(CH3)OO-)n is a polymerization product of diethyl ether hydroperoxide. It is a colorless oily liquid that is an extremely brisant and friction sensitive explosive material. Amounts of less than 5 milligrams can damage chemical apparatuses.[who?] The dangerous properties of ether peroxides are the reason that diethyl ether and other peroxide forming ethers like tetrahydrofuran (THF) or ethylene glycol dimethyl ether (1,2-dimethoxyethane) are avoided in industrial processes.
Diethyl ether peroxides can be detected with a potassium iodide (KI) solution in acetic acid or potassium iodide / starch paper. A positive test results in the formation of iodine (I2) that causes a yellow or brown color of the ether phase or a dark bluish spot on the paper strip.
Ether peroxides can be destroyed by disproportionation to acetaldehyde with Fe2+ or Mn2+ ions or with triphenylphosphine (PPh3). The resulting aldehyde has to be removed to prevent a rapid back-formation of peroxides.
- A. Rieche, R. Meister, Modellversuche zur Autoxidation der Äther, Angewandte Chemie 49(5):106 (1936) (German)
- "Peroxide Forming Solvents". Sigma-Aldrich. Retrieved 2014-07-09.