ICSC 1019 - DI-tert-BUTYL PEROXIDE

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DI-tert-BUTYL PEROXIDE	ICSC: 1019 (November 1998)
Bis(1,1-dimethylethyl)peroxide tert-Butyl peroxide DTBP

CAS #: 110-05-4

UN #: 3107

EC Number: 203-733-6

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Highly flammable. Many reactions may cause fire or explosion. Vapour/air mixtures are explosive.	NO open flames, NO sparks and NO smoking. NO contact with flammables. NO contact with contaminants. NO contact with hot surfaces. Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling.	Use water spray, powder, 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!
	SYMPTOMS	PREVENTION	FIRST AID
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	CLASSIFICATION & 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.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 5.2; UN Pack Group: II
STORAGE
Fireproof. Separated from combustible substances and reducing agents. Cool. Well closed.
PACKAGING
Special material.

DI-tert-BUTYL PEROXIDE

ICSC: 1019

PHYSICAL & CHEMICAL INFORMATION
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.	Formula: C₈H₁₈O₂ / (CH₃)₃COOC(CH₃)₃ Molecular mass: 146.2 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

PHYSICAL & CHEMICAL INFORMATION

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.

Formula: C₈H₁₈O₂ / (CH₃)₃COOC(CH₃)₃
Molecular mass: 146.2
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

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its vapour. Effects of short-term exposure The substance is irritating to the eyes and respiratory tract.	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

EXPOSURE & HEALTH EFFECTS

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

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

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

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 clothing with plenty of water because of fire hazard.

ADDITIONAL INFORMATION

EC Classification
Symbol: O, F; R: 7-11; S: (2)-3/7-14-16-36/37/39

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