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METHYL ETHYL KETONE PEROXIDE (Technical product)
ICSC: 1028
Peer-Review Status: 19.10.2005 Validated
2-Butanone peroxide
Ethyl methyl ketone peroxide
Methyl ethyl ketone hydroperoxide
MEKP 
CAS #: 1338-23-4 RTECS #: EL9450000
UN #: 3101
EINECS #: 215-661-2
    Formula: C8H16O4
Molecular mass: 176.2

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 acids, bases, reducing agents or hot surfaces.  Use water spray, powder, carbon dioxide, dry sand, foam. 
EXPLOSION Risk of fire and explosion on contact with acids, bases or 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.  Use 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.  Wear 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 refer for medical attention. 
Ingestion Abdominal pain. Burning sensation in the throat and chest. Shock or collapse.  Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: 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.   
EC Classification
 
UN Classification
UN Hazard Class: 5.2; UN Subsidiary Risks: 1 and 8; UN Pack Group: II 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-52GP1-L.  Store only if stabilized. Well closed. See Chemical Dangers. 

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. It reacts violently with combustible and reducing materials, amines, metals, strong acids and strong bases. This generates fire and explosion hazard. 

Occupational exposure limits
TLV: 0.2ppm (ceiling value); (ACGIH 2005). 

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, skin and respiratory tract. Corrosive on ingestion. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at >80°C
Relative density (water = 1): 1.10-1.17
Solubility in water: very poor 
 

NOTES
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. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations