GC-1412D
5
Important Safety Information
Methyl Ethyl Ketone Peroxide (MEKP)
MEKP is among the more hazardous materials
found in commercial channels. Proper handling
of the “unstable (reactive)” chemicals presents a
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valuable to the plastics industry in producing the
curing reaction of polyester resins and gel-coats
also produces the hazards which require great care
and caution in its storage, transportation, handling,
processing and disposal.
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that may result from improper handling of MEKP,
especially in regards to contamination and heat.
They must be thoroughly instructed regarding the
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disposal of MEKP and other hazardous materials
used in the laminating operation.
Polyester Resins and Gel-Coats
Spraying and Lamination Operations
GlasCraft
recommends that you consult OSHA
Sections 1910.94, 1910.106, 1910.107 and NFPA
No. 33, Chapter 16,17, and NFPA No. 91 for further
guidance.
Spraying materials containing polyester resin and
gel-coats creates potentially harmful mist, vapors and
atomized particulates. Prevent inhalation by providing
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Read the material manufacturer’s warnings and ma-
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related to polyester resins and gel-coats.
To prevent contact with polyester resins and gel-
coats, appropriate personal protective equipment,
including chemically impermeable gloves, boots,
aprons and goggles are required for everyone in the
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as well as potentially damaging to the eyes and
skin.
Read material manufacturer’s warnings and
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precautions related to MEKP.
Contaminated MEKP can become explosive.
Prevent contamination of MEKP with other materi-
als, which includes, but is not limited to polyester
overspray, polymerization accelerators and promot-
ers, and non-stainless metals. Even small amounts
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action may start slowly, and gradually build-up heat,
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Heat applied to MEKP, or heat build-up from con-
tamination reactions can cause it to reach what is
called its Self-Accelerating Decompisition Tempera-
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Spills should be promptly removed, so no residues
remain. Spillage can heat up to the point of self-
ignition. Dispose in accordance with manufacture’s
recommendation.
Store MEKP in a cool, dry and well-ventilated area
in the original containers away from direct sunlight
and away from other chemicals. It is strongly recom-
mended that the storage temperature remain below
86° F (30° C). Heat will increase the potential for ex-
plosive decomposition. Refer to NFPA 432.
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Remove all accumulations of overspray, FRP sand-
ings, etc. from the building as they occur. If this waste
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If cleaning solvents are required, read material
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Current catalysts are premixed and do not require
any diluents. GlasCraft strongly recommends that dilu-
ents not be used. Diluants add to the possibility of con-
taminates entering the catalyst system. Never dilute
MEKP with acetone or any solvent since this can pro-
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can explode.
Use only original equipment or equivalent parts
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tings, etc.) because a hazardous chemical reaction
may result between substituted parts and MEKP.
To prevent contact with MEKP, appropriate personal
protective equipment, including chemically imperme-
able gloves, boots, aprons and goggles are required
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Summary of Contents for 20864-05
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