Methyl ethyl ketone peroxide
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Synonyms & Trade Names
2-Butanone peroxide, Ethyl methyl ketone peroxide, MEKP, MEK peroxide, Methyl ethyl ketone hydroperoxidePhysical Description
Colorless liquid with a characteristic odor. [Note: Explosive decomposition occurs at 230°F.]Molecular Weight
176.2Boiling Point
244°F (Decomposes)Freezing Point
?Solubility
SolubleVapor Pressure
?Ionization Potential
?Specific Gravity
(59°F): 1.12Flash Point
(oc) 125-200°F (60% MEKP)Upper Exposive Limit
?Lower Explosive Limit
?
Combustible Liquid
Incompatibilities & Reactivities
Organic materials, heat, flames, sunlight, trace contaminants [Note: A strong oxidizing agent. Pure MEKP is shock sensitive. Commercial product is diluted with 40% dimethyl phthalate, cyclohexane peroxide, or diallyl phthalate to reduce sensitivity to shock.]Exposure Routes
inhalation, ingestion, skin and/or eye contactSymptoms
irritation eyes, skin, nose, throat; cough, dyspnea (breathing difficulty), pulmonary edema; blurred vision; blisters, scars skin; abdominal pain, vomiting, diarrhea; dermatitis; In Animals: liver, kidney damageTarget Organs
Eyes, skin, respiratory system, liver, kidneysPersonal Protection/Sanitation
(See protection codes)Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:No recommendation
Provide:Eyewash, Quick drench
First Aid
(See procedures)Eye:Irrigate immediately
Skin:Water wash immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations
Not available.
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division