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Methyl ethyl ketone peroxide

Synonyms & Trade Names
2-Butanone peroxide, Ethyl methyl ketone peroxide, MEKP, MEK peroxide, Methyl ethyl ketone hydroperoxide
CAS No.
1338-23-4
RTECS No.
EL9450000
DOT ID & Guide
Formula
C8H16O4
Conversion
1 ppm = 7.21 mg/m3
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
C 0.2 ppm (1.5 mg/m3)
OSHA PEL
none See Appendix G
Measurement Methods
NIOSH 3508;
OSHA 77
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with a characteristic odor. [Note: Explosive decomposition occurs at 230°F.]
Molecular Weight
176.2
Boiling Point
244°F (Decomposes)
Freezing Point
?
Solubility
Soluble
Vapor Pressure
?
Ionization Potential
?
Specific Gravity
(59°F): 1.12
Flash 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 contact
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
Target Organs
Eyes, skin, respiratory system, liver, kidneys
Personal 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.

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 1028
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