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METHYL ETHYL KETONE PEROXIDE (MEKP)
Methyl Ethyl Ketone Peroxide (MEKP)
Description:
Due to the relatively unstable nature of organic peroxides a loss of quality can be detected over a period of time. To minimize the loss of quality, we recommend a maximum storage temperature (Ts max.) for each organic peroxide product. For MEKP Ts max.= 250C
When stored under the recommended storage conditions, will remain within the limit for a period of at least three months after delivery.
APPLICATIONS
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Methyl ethyl ketone peroxide (MEKP) is used for the curing of unsaturated polyster resins in the presence of cobalt octoate accelerator at room and elevated temperatures.
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For room temperature application it is necessary to use MEKP togetherwith a cobalt accelerator (e.g.Accelerator).
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This catalyst gives much faster gel time required for GRP pipe manufacturing.
SAFETY AND HANDLING
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Keep containers tightly closed. Store and handle MEKP in a dry wellventilated place away from source of heat or ignition and direct sunlight.
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Avoid contact with reducing agents (e.g.amines), acids, alkalis and Heavy metal compounds (e.g.accelerators, driers and metal soaps)
REQUEST INFORMATION
SOLUBILITY
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Slightly soluble in water and organic solvents
PHYSICAL AND CHEMICAL PROPERTIES
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Specific Gravity : 1.14 to 1.18
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Viscosity, 200C : 24 mPa.s
VAPOUR PRESSURE VAPOUR DENSITY: >1UNKNOWN
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Flash Point : 77°C
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Shelf life : 3 months @ 25°C
CURE CHARACTERISTICS
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In a high reactive standard orthophthalic resin in combination with (= 1% cobalt) the following application characteristics were determined:
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Gel times at 200C
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2 % MEKP + 0.5% Accelerator 13 minutes
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2 % MEKP + 1.0% Accelerator 8 minutes
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Accelerators should be first added to the resin as direct contact of MEKP with accelerators may cause explosion.
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A thorough mixing of resin and accelerator is recommended before addition of MEKP for obtaining best results.
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Organic peroxides are thermally unstable substances, which may undergo self-accelerating decomposition.
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The lowest temperature at which self-accelerating decomposition of a substance in the original packaging may occur is the Self Acceleratin Decompositi- on Temperature (SADT).
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The SADT is determined on the basis of the Heat Accumulation Storage Test.
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Emergency temperature(Tem) : 550CFor MEKP SADT : 600C
Cure Characteristics
THERMAL STABILITY
APPLICATIONS
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CAS No. : 1338-23-4
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Appearance : Clear
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Colourless Liquid
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Total active oxygen* : 8.9 – 9%
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Other name : MEKP, Catalyst, Hardener
CHARACTERISTICS
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Density, 200C : 1.14-1.18
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Viscosity, 200C : 24 mPa.s
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Water content : max. 2%