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CUMENE HYDROPEROXIDEICSC: 0761
April 2005
CAS #: 80-15-9alpha,alpha-Dimethylbenzyl hydroperoxide
Hydroperoxide, 1-methyl-1-phenylethyl
Cumyl hydroperoxide
UN #: 3107
EINECS #: 201-254-7

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible.  Above 79°C explosive vapour/air mixtures may be formed. Risk of fire and explosion on contact with organic materials or reducing agents.  NO open flames. NO contact with flammables.  Above 79°C use a closed system and ventilation. Use non-sparking handtools.  Use water spray, powder, alcohol-resistant foam, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. 

 PREVENT GENERATION OF MISTS! AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Sore throat. Burning sensation. Cough. Laboured breathing. Shortness of breath. Symptoms may be delayed. See Notes.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. 
Skin Redness. Pain. Skin burns.  Protective gloves. Protective clothing.  First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer for medical attention . 
Eyes Redness. Pain. Severe 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 Burning sensation. Abdominal pain. 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 CLASSIFICATION & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking liquid in sealable plastic containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT absorb in saw-dust or other combustible absorbents. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 5.2 

STORAGE
Separated from combustible substances, reducing agents, mineral acids and food and feedstuffs. Cool. Dry. Store in an area without drain or sewer access. 
PACKAGING
Do not transport with food and feedstuffs. 
CUMENE HYDROPEROXIDE ICSC: 0761
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-YELLOW LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
May explode on heating above ~150°C. The substance is a strong oxidant. It reacts violently with combustible and reducing materials. This generates fire and explosion hazard. May decompose violently on contact with cobalt, copper or lead alloys and mineral acids. 

Formula: C9H12O2 / C6H5C(CH3)2OOH
Molecular mass: 152.2
Melting point: -9°C
Relative density (water = 1): 1.06
Solubility in water, g/100ml: 1.5
Vapour pressure, Pa at 20°C: 32
Relative vapour density (air = 1): 5.4
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.0
Flash point: 79°C c.c.
Explosive limits, vol% in air: 0.9-6.5
Octanol/water partition coefficient as log Pow: 2.16  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion. 

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation may cause lung oedema. See Notes. The effects may be delayed. Medical observation is indicated. 

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. 

Effects of long-term or repeated exposure
 


Occupational exposure limits
 

ENVIRONMENT
The substance is toxic to aquatic organisms. 

NOTES
The technical product can contain a certain amount of cumene (10-20%) which changes physical properties.
Other UN number: 3109 Organic peroxide, type F.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor, or by an authorized person, should be considered.
Rinse contaminated clothing with plenty of water because of fire hazard. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: O, T, N; R: 7-21/22-23-34-48/20/22-51/53; S: (1/2)-3/7-14-36/37/39-45-50-61 

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    See Also:
       Toxicological Abbreviations