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DI-tert-BUTYL PEROXIDE
ICSC: 1019
Peer-Review Status: 24.11.1998 Validated
Bis(1,1-dimethylethyl)peroxide
tert-Butyl peroxide
DTBP 
CAS #: 110-05-4 RTECS #: ER2450000
UN #: 3107
EC #: 617-001-00-2
EINECS #: 203-733-6
    Formula: C8H18O2 / (CH3)3COOC(CH3)3
Molecular mass: 146.2

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Highly flammable. Many reactions may cause fire or explosion.  NO open flames, NO sparks and NO smoking. NO contact with flammables. NO contact with contaminants. NO contact with hot surfaces.  Use water spray, powder, foam, carbon dioxide. 
EXPLOSION Vapour/air mixtures are explosive.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.  In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. 
 
EXPOSURE   PREVENT GENERATION OF MISTS!   
Inhalation Cough. Shortness of breath. Sore throat.  Use ventilation.  Fresh air, rest. Half-upright position. Refer for medical attention. 
Skin   Protective gloves.  First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. 
Eyes Redness. Pain.  Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal cramps. Vomiting. Further see Inhalation.  Do not eat, drink, or smoke during work.  Rinse mouth. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Ventilation. Remove all ignition sources. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer. Do NOT absorb in saw-dust or other combustible absorbents.  Special material. 
EC Classification
Symbol: O, F; R: 7-11; S: (2)-3/7-14-16-36/37/39 
UN Classification
UN Hazard Class: 5.2; UN Pack Group: II 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-52G01.
NFPA Code: H3; F2; R4; OX. 
Fireproof. Separated from combustible substances and reducing agents. Cool. Well closed. 

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

Physical dangers
The vapour is heavier than air and may travel along the ground; distant ignition possible. 

Chemical dangers
Decomposes at 111°C. This increases fire hazard. The substance is a strong oxidant. It reacts violently with combustible and reducing materials. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour. 

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 short-term exposure
The substance is irritating to the eyes and respiratory tract. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at 111°C
Melting point: -40°C
Relative density (water = 1): 0.8
Solubility in water: none
Vapour pressure, kPa at 20°C: 2.6
Relative vapour density (air = 1): 5
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.1
Flash point: 12°C c.c.
Octanol/water partition coefficient as log Pow: 1-4  
 

NOTES
Explosive limits are unknown in literature, although the substance is combustible and has a flash point < 55°C.
Health effects of exposure to the substance have not been investigated adequately.
Rinse contaminated clothes (fire hazard) with plenty of water. 

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