International Chemical Safety Cards

DICUMYL PEROXIDE ICSC: 1346
World Health Organization (WHO) International Labour Organization (ILO) United Nations Environmental Programme (UNEP) European Commission National Institute for Occupational Safety and Health (NIOSH)
Peroxide, bis(1-methyl-1-phenylethyl)
Bis(alpha,alpha-dimethylbenzyl)peroxide
Diisopropylbenzene peroxide
C18H22O2 / (C6H5C(CH3)2O)2
Molecular mass: 270.4
5.2 Organic Peroxide placard ICSC #    1346
CAS #     80-43-3
RTECS # SD8150000
UN #        3110
EC #         617-006-00-X
October 18, 1999 Validated
TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Combustible.
NO open flames.
Powder, water spray, foam, carbon dioxide.
EXPLOSION Finely dispersed particles form explosive mixtures in air.
Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.

EXPOSURE
PREVENT DISPERSION OF DUST!

 •INHALATION Cough. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest.
 •SKIN Redness.
Protective gloves.
First rinse with plenty of water, then remove contaminated clothes and rinse again.
 •EYES Redness.
Safety spectacles, 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
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Remove all ignition sources. Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. (Extra personal protection: P2 filter respirator for harmful particles).
Fireproof. Separated from combustible and reducing substances, strong oxidants, strong acids, bases , and heavy metals . Cooled. Keep in the dark. Well closed. Keep under inert gas.

O symbol
Xi symbol
N symbol
R: 7-36/38-51/53
S: 2-3/7-14-36/37/39-61
UN Hazard Class: 5.2
UN Packing Group: II
SEE IMPORTANT INFORMATION ON BACK
ICSC: 1346 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

DICUMYL PEROXIDE ICSC: 1346
I

M

P

O

R

T

A

N

T


D

A

T

A
PHYSICAL STATE; APPEARANCE:
YELLOW TO WHITE CRYSTALLINE POWDER

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes rapidly on heating and under influence of light , causing fire and explosion hazard. Reacts violently with acids , bases , reducing agents , and heavy metals.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol.

INHALATION RISK:
Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes , the skin , and the respiratory tract .

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
PHYSICAL
PROPERTIES
Boiling point (decomposes): 130C
Melting point: 39C
Density: 1.0
g/cm
Solubility in water, g/100 ml:
none
Relative vapour density (air = 1): 9.3
Flash point:
71C c.c.
Octanol/water partition coefficient as log Pow: 5.5
ENVIRONMENTAL
DATA
Environmental Hazard placard The substance is toxic to aquatic organisms. In the food chain important to humans, bioaccumulation takes place, specifically in fish.
N O T E S
ADDITIONAL INFORMATION


ICSC: 1346 DICUMYL PEROXIDE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.