Methyl ethyl ketone peroxide
Overview
 
Methyl ethyl ketone peroxide (MEKP) is an organic peroxide
Organic peroxide
Organic peroxides are organic compounds containing the peroxide functional group . If the R' is hydrogen, the compound is called an organic hydroperoxide. Peresters have general structure RCOOR. The O-O bond easily breaks and forms free radicals of the form RO·...

, a high explosive similar to acetone peroxide
Acetone peroxide
Acetone peroxide is an organic peroxide and a primary high explosive. It takes the form of a white crystalline powder with a distinctive bleach-like odor....

. MEKP is a colorless, oily liquid whereas acetone peroxide is a white powder at STP
Standard conditions for temperature and pressure
Standard condition for temperature and pressure are standard sets of conditions for experimental measurements established to allow comparisons to be made between different sets of data...

; MEKP is slightly less sensitive to shock and temperature, and more stable in storage.

Dilute solution
Solution
In chemistry, a solution is a homogeneous mixture composed of only one phase. In such a mixture, a solute is dissolved in another substance, known as a solvent. The solvent does the dissolving.- Types of solutions :...

s of 30 to 60% MEKP are used in industry and by hobbyists as the catalyst which initiates the polymerization
Polymerization
In polymer chemistry, polymerization is a process of reacting monomer molecules together in a chemical reaction to form three-dimensional networks or polymer chains...

 of polyester resin
Polyester resin
Polyester resins are unsaturated resins formed by the reaction of dibasic organic acids and polyhydric alcohols. Polyester resins are used in sheet moulding compound, bulk moulding compound and the toner of laser printers...

s used in glass-reinforced plastic
Glass-reinforced plastic
Fiberglass , is a fiber reinforced polymer made of a plastic matrix reinforced by fine fibers of glass. It is also known as GFK ....

, and casting.
Encyclopedia
Methyl ethyl ketone peroxide (MEKP) is an organic peroxide
Organic peroxide
Organic peroxides are organic compounds containing the peroxide functional group . If the R' is hydrogen, the compound is called an organic hydroperoxide. Peresters have general structure RCOOR. The O-O bond easily breaks and forms free radicals of the form RO·...

, a high explosive similar to acetone peroxide
Acetone peroxide
Acetone peroxide is an organic peroxide and a primary high explosive. It takes the form of a white crystalline powder with a distinctive bleach-like odor....

. MEKP is a colorless, oily liquid whereas acetone peroxide is a white powder at STP
Standard conditions for temperature and pressure
Standard condition for temperature and pressure are standard sets of conditions for experimental measurements established to allow comparisons to be made between different sets of data...

; MEKP is slightly less sensitive to shock and temperature, and more stable in storage.

Dilute solution
Solution
In chemistry, a solution is a homogeneous mixture composed of only one phase. In such a mixture, a solute is dissolved in another substance, known as a solvent. The solvent does the dissolving.- Types of solutions :...

s of 30 to 60% MEKP are used in industry and by hobbyists as the catalyst which initiates the polymerization
Polymerization
In polymer chemistry, polymerization is a process of reacting monomer molecules together in a chemical reaction to form three-dimensional networks or polymer chains...

 of polyester resin
Polyester resin
Polyester resins are unsaturated resins formed by the reaction of dibasic organic acids and polyhydric alcohols. Polyester resins are used in sheet moulding compound, bulk moulding compound and the toner of laser printers...

s used in glass-reinforced plastic
Glass-reinforced plastic
Fiberglass , is a fiber reinforced polymer made of a plastic matrix reinforced by fine fibers of glass. It is also known as GFK ....

, and casting. For this application, MEKP is dissolved in dimethyl phthalate
Dimethyl phthalate
Dimethyl phthalate is a phthalate with molecular formula 2. It is the methyl ester of phthalic acid.Dimethyl phthalate is an ectoparasiticide and has many other uses, including in solid rocket propellants, plastics, and insect repellents....

, cyclohexane peroxide, or diallyl phthalate to reduce sensitivity to shock. Benzoyl peroxide
Benzoyl peroxide
Benzoyl peroxide is an organic compound in the peroxide family. It consists of two benzoyl groups bridged by a peroxide link. Its structural formula is [C6H5C]2O2. It is one of the most important organic peroxides in terms of applications and the scale of its production...

 can be used for the same purpose.

MEKP is a severe skin irritant and can cause progressive corrosive damage or blindness.

MEKP, acetone peroxide and HMTD
Hexamethylene triperoxide diamine
Hexamethylene triperoxide diamine is ahigh explosive organic compound, first synthesised in 1885 by Legler. The theorised structure lent itself well to acting as an initiating, or primary explosive...

 have all been reported to be the explosives used in the alleged 2006 transatlantic aircraft plot
2006 transatlantic aircraft plot
The 2006 transatlantic aircraft plot was a terrorist plot to detonate liquid explosives carried on board at least 10 airliners travelling from the United Kingdom to the United States and Canada...

.

External links

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