METHYL ETHYL KETONE PEROXIDE (Technical product) ICSC: 1028 2-Butanone peroxide Ethyl methyl ketone peroxide Methyl ethyl ketone hydroperoxide MEKP C8H16O4 Molecular mass: 176.2 ICSC #    1028 CAS #     1338-23-4 RTECS # EL9450000 UN #        3101 Types of Hazard/ Exposure Acute Hazards/ Symptoms Prevention First Aid/ Fire Fighting FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. NO contact with acid(s),base(s),reducing agents. NO contact with hot surfaces. Powder, carbon dioxide , dry sand , foam , water spray. Explosion Risk of fire and explosion acid(s), base(s) and reducing agents. Combat fire from a sheltered position. Exposure STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR!  •Inhalation Sore throat. Cough. Burning sensation. Laboured breathing. Shortness of breath. Ventilation, local exhaust, or breathing protection. Fresh air, rest. Half-upright position. Refer for medical attention.  •Skin Redness. Pain. Skin burns. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.  •Eyes Redness. Pain. Severe deep burns. Face shield or eye protection in combination with breathing protection. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •Ingestion Abdominal pain. Burning sensation in the throat and chest. Shock or collapse. Do not eat, drink, or smoke during work. Rinse mouth. Give plenty of water to drink. Do NOT induce vomiting. Refer for medical attention. Spillage Disposal Storage Packaging & Labelling Chemical protection suit including self-contained breathing apparatus. Collect leaking and spilled liquid in sealable plastic containers as far as possible. Do NOT absorb in saw-dust or other combustible absorbents. Store only if stabilized. Well closed. See Chemical Dangers. UN Hazard Class: 5.2 UN Subsidiary Risks: 1 and 8 UN Packing Group: II METHYL ETHYL KETONE PEROXIDE (Technical product) ICSC: 1028 Important Data Physical State; Appearance: COLOURLESS LIQUID , WITH PUNGENT ODOUR. Physical Dangers: Chemical Dangers: Heating may cause violent combustion or explosion. On combustion, forms toxic and corrosive gases. The substance is a strong oxidant and reacts violently with combustible and reducing materials amines,metals,strong acids,strong bases,, causing fire and explosion hazard. Occupational Exposure Limits: TLV: 0.2 ppm (Ceiling value) (ACGIH 2005). MAK not established. OSHA PEL: none NIOSH REL: C 0.2 ppm (1.5 mg/m3) NIOSH IDLH: N.D. See: IDLH INDEX Routes of Exposure: The substance can be absorbed into the body by inhalation and by ingestion. Inhalation Risk: A harmful concentration of airborne particles can be reached quickly when dispersed. Effects of Short-Term Exposure: The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Effects of Long-Term or Repeated Exposure: Physical Properties Boiling point (decomposes): >80°C Relative density (water = 1): 1.10-1.17 Solubility in water: very poor Environmental Data N O T E S The occupational exposure limit value should not be exceeded during any part of the working exposure. Technical product is sold with 40-60% of diluent (for example, dimethyl phthalate, cyclohexanol peroxide, diallyl phthalate) to reduce potential explosion hazard. An added stabilizer or inhibitor can influence the toxicological properties of this substance, consult an expert. Rinse contaminated clothes (fire hazard) with plenty of water. Other UN numbers 3105, 3107 for Organic peroxide. Transport Emergency Card: TEC (R)-52GP1-L ADDITIONAL INFORMATION ICSC: 1028 METHYL ETHYL KETONE PEROXIDE (Technical product) (C) IPCS, CEC, 1994 IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.