Methyl ethyl ketone peroxide
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CAS
1338-23-4
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C8H16O4
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RTECS
EL9450000
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Synonyms & Trade Names
2-Butanone peroxide, Ethyl methyl ketone peroxide, MEKP, MEK peroxide, Methyl ethyl ketone hydroperoxide
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: C 0.2 ppm (1.5 mg/m3)
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OSHA PEL†: none
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IDLH
N.D.
See: IDLH INDEX
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Conversion
1 ppm = 7.21 mg/m3
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Physical Description
Colorless liquid with a characteristic odor. [Note: Explosive decomposition occurs at 230°F.]
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MW: 176.2
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BP: 244°F (Decomposes)
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FRZ: ?
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Sol: Soluble
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VP: ?
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IP: ?
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Sp.Gr(59°F): 1.12
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Fl.P(oc): 125-200°F (60% MEKP)
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UEL: ?
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LEL: ?
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Combustible Liquid
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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.]
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Measurement Methods
NIOSH 3508; OSHA 77
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
Provide: Eyewash, Quick drench
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
Not available.
Important additional information about respirator selection
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Exposure Routes
inhalation, ingestion, skin and/or eye contact
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Symptoms
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 damage
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Target Organs
Eyes, skin, respiratory system, liver, kidneys
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