Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Methyl ethyl ketone peroxide (MEKP) is an organic peroxide with the formula [(CH3)(C2H5)C(O2H)]2O2. MEKP is a colorless oily liquid. It is widely used in vulcanization (crosslinking) of polymers.[3]
It is derived from the reaction of methyl ethyl ketone and hydrogen peroxide under acidic conditions. Several products result from this reaction including a cyclic dimer.[4] The linear dimer, the topic of this article, is the most prevalent.[5] and this is the form that is typically quoted in the commercially available material.[6]
Solutions of 30 to 40% MEKP are used in industry and by hobbyists as catalyst to initiate the crosslinking of unsaturated polyester resins used in fiberglass, and casting. For this application, MEKP often is dissolved in a phlegmatizer such as dimethyl phthalate, cyclohexane peroxide,[clarification needed] or diallyl phthalate [de] to reduce sensitivity to shock. Benzoyl peroxide can be used for the same purpose.[citation needed]
^ abcdNIOSH Pocket Guide to Chemical Hazards. "#0416". National Institute for Occupational Safety and Health (NIOSH).
^ abRecord of 2-Butanone peroxide in the GESTIS Substance Database of the Institute for Occupational Safety and Health, accessed on 10 March 2013.
^Klenk, Herbert; Götz, Peter H.; Siegmeier, Rainer; Mayr, Wilfried (2000). "Peroxy Compounds, Organic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a19_199. ISBN 978-3527306732.
^Pastureau, P. (1907). "Le superoxyde de la méthyléthylcétone". Comptes Rendus. 144 (2): 90–93.
^Milas, N. A.; Golubović, A. (1959). "Studies in Organic Peroxides. XXV. Preparation, Separation and Identification of Peroxides Derived from Methyl Ethyl Ketone and Hydrogen Peroxide". Journal of the American Chemical Society. 81 (21): 5824–5826. doi:10.1021/ja01530a068.
^"2-Butanone peroxide". Sigma-Aldrich. Retrieved 5 December 2011.
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