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CUMENE HYDROPEROXIDE ICSC: 0761
Date of Peer Review: April 2005

alpha,alpha-Dimethylbenzyl hydroperoxide
Hydroperoxide, 1-methyl-1-phenylethyl
Cumyl hydroperoxide
CAS # 80-15-9 C9H12O2 / C6H5C(CH3)2OOH
RTECS # MX2450000 Molecular mass: 152.2
UN # 3107
EC # 617-002-00-8
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible.
NO open flames. NO contact with flammable substances.
Powder, alcohol-resistant foam, water spray, carbon dioxide.
EXPLOSION Above 79C explosive vapour/air mixtures may be formed. Risk of fire and explosion on contact with organic, combustible substances reducing agents.
Above 79C use a closed system, ventilation. Use non-sparking handtools.
In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position.
EXPOSURE
PREVENT GENERATION OF MISTS! AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
Inhalation Sore throat. Burning sensation. Cough. Laboured breathing. Shortness of breath. Symptoms may be delayed (see Notes).
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, then remove contaminated clothes and rinse again. 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 Burning sensation. Abdominal pain. 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 PACKAGING & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable plasticcontainers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT absorb in saw-dust or other combustible absorbents.
Do not transport with food and feedstuffs.
EU 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
UN Classification
UN Hazard Class: 5.2

EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-52GP1-L
NFPA Code: H1; F2; R4; OX
Separated from combustible and reducing substances, mineral acids, food and feedstuffs. Cool. Dry. Store in an area without drain or sewer access.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK
CUMENE HYDROPEROXIDE ICSC: 0761
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS TO YELLOW LIQUID, WITH CHARACTERISTIC ODOUR.

CHEMICAL DANGERS:
May explode on heating at about 150C. The substance is a strong oxidant and reacts violently with combustible and reducing materials causing fire and explosion hazard. Contact with cobalt, copper or lead alloys and mineral acids may lead to violent decomposition.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of this substsnce may cause lung oedema (see Notes). The effects may be delayed. Medical observation is indicated.

PHYSICAL PROPERTIES
Melting point: -9C
Relative density (water = 1): 1.06
Solubility in water, g/100 ml: 1.5
Vapour pressure, Pa at 20C: 32
Relative vapour density (air = 1): 5.4
Relative density of the vapour/air-mixture at 20C (air = 1): 1.0
Flash point: 79C c.c.
Explosive limits, vol% in air: 0.9-6.5
Octanol/water partition coefficient as log Pow: 2.16
ENVIRONMENTAL DATA
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 a person authorized by him/her, should be considered. Rinse contaminated clothes (fire hazard) with plenty of water.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999