Chemical data sheet for:

Colorless liquid. Strong irritant to skin and tissue. Used as an initiator for room temperature cure of unsaturated polyester resins. (NOAA Reactivity 2007)

• Explosive
• Strong Oxidizing Agent

No rapid reaction with air. No rapid reaction with water.

Behavior in Fire: Explosive. (USCG, 1999)

Extremely destructive to tissue of the mucous membranes, upper respiratory tract, eyes, and skin. Symptoms of exposure include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting. (USCG, 1999)

METHYL ETHYL KETONE PEROXIDE is a strong oxidizing agent. May be ignited by heat, sparks or flame and undergoes self-accelerating decomposition. Explosive decomposition occurs at 230° F. Sensitive to sunlight. Ignition and/or explosion may occur if mixed with readily oxidizable materials. Reacts with combustible materials such as wood, cloth or organic materials, with chlorine, and with metals (iron, copper and their alloys and aluminum and its alloys). Incompatible with strong oxidizing agents, strong reducing agents, natural rubbers, synthetic rubbers and chemical accelerators. Incompatible with heavy metals, acids and bases. (NOAA REACTIVITY, 2007)

• Peroxides, Organic

Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Keep run-off water out of sewers and water sources. (© AAR, 2003)

Keep material out of water sources and sewers. Apply water spray or mist to knock down vapors. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. Water spill: Use natural barriers or oil spill control booms to limit spill travel. Remove trapped material with suction hoses. (© AAR, 2003)

Skin: Wear appropriate personal protective clothing to prevent skin contact.

Eyes: Wear appropriate eye protection to prevent eye contact.

Wash skin: The worker should immediately wash the skin when it becomes contaminated.

Remove: Work clothing that becomes wet or significantly contaminated should be removed and replaced.

Change: No recommendation is made specifying the need for the worker to change clothing after the work shift.

Provide: Eyewash fountains should be provided in areas where there is any possibility that workers could be exposed to the substance; this is irrespective of the recommendation involving the wearing of eye protection. Facilities for quickly drenching the body should be provided within the immediate work area for emergency use where there is a possibility of exposure. [Note: It is intended that these facilities provide a sufficient quantity or flow of water to quickly remove the substance from any body areas likely to be exposed. The actual determination of what constitutes an adequate quick drench facility depends on the specific circumstances. In certain instances, a deluge shower should be readily available, whereas in others, the availability of water from a sink or hose could be considered adequate.] (NIOSH, 2003)

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.

INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.

INGESTION: DO NOT INDUCE VOMITING. Corrosive chemicals will destroy the membranes of the mouth, throat, and esophagus and, in addition, have a high risk of being aspirated into the victim's lungs during vomiting which increases the medical problems. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. IMMEDIATELY transport the victim to a hospital. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. Transport the victim IMMEDIATELY to a hospital. (NTP, 1992)

• METHYL ETHYL KETONE PEROXIDE

• 2-BUTANONE PEROXIDE
• 2-BUTANONE, PEROXIDE
• BUTANOX LPT
• BUTANOX M 105
• BUTANOX M 50
• BUTANOX M50, M105, LPT
• CHALOXYD MEKP-HA 1
• CHALOXYD MEKP-HA 1, -LA 1
• CHALOXYD MEKP-LA 1
• COMPONENT 1: 2-BUTANONE PEROXIDE (45%)
• COMPONENT 2: DIMETHYL PHTHALATE
• DELTA X 9
• DIPROMETIL LA 50R
• ETHYL METHYL KETONE PEROXIDE
• ETHYLMETHYLKETONE PEROXIDE
• FR 222
• HI-POINT 180
• KAYAMEK A
• KAYAMEK M
• KETONOX
• LUCIDOL DDM 9
• LUCIDOL DELTA X
• LUPERSOL DDA 30
• LUPERSOL DDM
• LUPERSOL DDM 9
• LUPERSOL DELTA X
• LUPERSOL DELTA X 9
• LUPERSOL DHD 9
• LUPERSOL DNF
• LUPERSOL DSW
• MEK PEROXIDE
• MEKP
• MEKPO
• MEPOX
• MEPOX 55
• METHYL ETHYL KETONE HYDROPEROXIDE
• METHYLETHYLKETONE PEROXIDE
• PERMEK G
• PERMEK H
• PERMEK N
• PERÓXIDO DE METIL ETIL CETONA (DOT SPANISH)
• PEROXYDE DE MÉTHYLÉTHYLCÉTONE (DOT FRENCH)
• SUPEROX 46-710