Mostly the same precautions as with other chemicals - but the consequences tend to be more serious…note that MEKP doesn’t like sunlight, heat, or metals (even rust), burns “violently” and can actually explode, eg. if mixed with an accelerator like cobalt.
Plenty of info about MEKP on the internet - here’s an example http://www.compositesaustralia.com.au/methyl.htm
(this quote hits the nail on the head:)
“since MEKP must start a chemical reaction within the resin it must be a reactive compound. This makes it one of the most hazardous materials in the composites industry, since it can react with other materials causing a fire or with the human body resulting in chemical burns.”
but just to make it convenient for everybody and in the interests of safety here’s another version:
STORAGE
• Storage at 80°F (THAT’S ABOUT 26° C) or below is recommended. Storage below 70°F is recommended for maximum shelf life.
• Store in original containers away from flammables and all sources of heat, sparks, or flames; out of direct sunlight; and away from cobalt naphthenate, other promoters, accelerators, oxidizing or reducing agents and strong acids or bases.
• Leaking containers – Remove and isolate in a safe area. Re-package or dispose immediately (see spills).
• Never store in refrigerators containing food and/or beverages.
• Consult National Fire Protection Association (NFPA) Code 432 and/or local regulatory agencies.
• Rotate stock, use oldest date first.
HANDLING
• Inform all personnel of procedures for safe handling and review MSDS with them.
• Remove from storage area only the amount needed for one shift.
• Wear safety glasses or goggles and chemical resistant gloves.
• Keep away from heat, flames, and sparks.
• Avoid breathing vapors.
• Dilution is not recommended.
• Never add peroxides directly to promoters or vice-versa, violent decomposition can occur.
• Prevent contamination such as contact with dust, over spray, wood, and combustible material.
• Avoid contact with materials other than polyethylene, polypropylene, Teflon®, Tygon®, or similar materials, glass or glass-lined steel, and 304 or 316 stainless steel or equivalent.
FIRST AID
• EYES – Flush immediately with large amounts of fresh water and continue washing for at least 15 minutes. Medical attention is needed.
• SKIN – Wash with soap and water.
• INGESTION – Administer large amounts of milk or water and call a physician immediately. Do not induce vomiting. As an aid to the physician, suggest calling your local Poison Control Center.
SPILLS
• Clean up immediately by absorbing with inert material – vermiculite or sand.
• After absorbing, moderately wet immediately with water and place in a clean plastic bag inside a plastic pail.
• Dispose of immediately in accordance with local, state, and federal regulations.
NOTE: Spilled peroxides, if not immediately cleaned up, can become contaminated and ignite or decompose in a hazardous, violent manner.
FIRE
• Peroxides ignite readily and burn vigorously with acceleration.
• Use water from a safe distance – preferably with a water-fog nozzle.
• For very small fires, an extinguisher with carbon dioxide, foam, or dry chemical may be effective.
• In case of fire in or near a storage area, cool stored containers with water spray.