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|Section2= |Section3= |Section6= }} Diacetyl peroxide is an organic peroxide that is a crystalline, sand-like solid with a sharp odor.〔 The commercial product consists of a 25% solution of acetyl peroxide in dimethyl phthalate.〔 ==Reactivity == Peroxides, such as diacetyl peroxide, are good oxidizing agents. Organic compounds can ignite on contact with concentrated peroxides, while strongly reduced material such as sulfides, nitrides, and hydrides may react explosively. There are few chemical classes that do not at least produce heat when mixed with peroxides. Many produce explosions or generate gases (toxic and nontoxic). Generally, dilute solutions of peroxides (<70%) are safe, but the presence of a catalyst (often a transition metal such as cobalt, iron, manganese, nickel, or vanadium) as an impurity may even then cause rapid decomposition, a buildup of heat, and even an explosion. Solutions of peroxides often become explosive when evaporated to dryness or near-dryness. 〔 Sax, N.I. Dangerous Properties of Industrial Materials. 4th ed. New York: Van Nostrand Reinhold, 1975., p. 357 〕 Pure (100%) material is a severe explosion hazard. It should not be stored after preparation, nor heated above 30 C. 〔Hawley, G.G. The Condensed Chemical Dictionary. 9th ed. New York: Van Nostrand Reinhold Co., 1977., p. 10 〕 There have been reports of detonation of the pure material. The 25% solution also has explosive potential when inadvertent partial evaporation of a weak solution can create an explosive solution or a shock-sensitive crystalline material. 〔National Research Council. Prudent Practices for Handling Hazardous Chemicals in Laboratories. Washington, DC: National Academy Press, 1981., p. 106 〕 It is essential to prevent the separation of the crystalline peroxide even in traces, since when dry, it is shock sensitive and is a high explosion risk.〔Bretherick, L. Handbook of Reactive Chemical Hazards. 4th ed. Boston, MA: Butterworth-Heinemann Ltd., 1990, p. 453, 1104.〕 Application of fluorine to aqueous sodium acetate solution caused an explosion involving the formation of diacetyl peroxide.〔 Dry acetyl peroxide is unpredictable. Five grains of it were removed from an ice chest and detonated violently. Solid acetyl peroxide in contact with ether or any volatile solvent may explode violently.〔 National Fire Protection Association Fire Protection Guide on Hazardous Materials. 7th ed. Boston, Mass.: National Fire Protection Association, 1978., p. 491M-143 〕 Diacetyl peroxide can be formed when a mixture of hydrogen peroxide, and excess acetic anhydride reacts with one of the reaction products peracetic acid. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Diacetyl peroxide」の詳細全文を読む スポンサード リンク
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