Dicumyl Peroxide
CAS No.: 80-43-3
Synonyms:
Formula: C18H22O2
Exact Mass: 270.16200
Molecular Weight: 270.36600
PSA: 18.46000
LogP: 4.80520
Dicumyl Peroxide 80-43-3 MSDS
Name: Dicumyl peroxide Material Safety Data Sheet
Synonym: Bis(alpha,alpha-dimethylbenzyl)peroxide; Perkadox BC; DCP; organic peroxides; polymerization initiators
CAS: 80-43-3
Section 1 - Chemical Product   MSDS Name:Dicumyl peroxide Material Safety Data Sheet
Synonym:Bis(alpha,alpha-dimethylbenzyl)peroxide; Perkadox BC; DCP; organic peroxides; polymerization initiators

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
80-43-3 Dicumyl peroxide 99 201-279-3
Hazard Symbols: XI O N
Risk Phrases: 36/38 7 51/53

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Irritating to eyes and skin. May cause fire. Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. Prolonged and/or repeated contact may cause irritation and/or dermatitis. May be harmful if absorbed through the skin. Not expected to cause an allergic skin reaction.
Ingestion:
May cause irritation of the digestive tract.
Inhalation:
Causes respiratory tract irritation. May be harmful if inhaled.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
  Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Do not induce vomiting. Get medical aid. Wash mouth out with water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.

Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with other material may cause fire. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or chemical foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation. Use only non-sparking tools and equipment.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid breathing dust.
Storage:
Store in a tightly closed container. Keep away from strong acids.
Keep refrigerated. (Store below 4C/39F.) Keep away from reducing agents. Keep away from polymerization catalysts. Do not exceed 30C (86F).

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 80-43-3: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Crystalline powder
Color: white to pale yellow
Odor: distinct - lemon - menthol odor
pH: Not available.
Vapor Pressure: 15.4 mm Hg @ 38 deg C
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 38-41 deg C
Autoignition Temperature: > 380 deg C (> 716.00 deg F)
Flash Point: > 110 deg C (> 230.00 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Insoluble.
Specific Gravity/Density: 1.02 @ 45C
Molecular Formula: C18H22O2
Molecular Weight: 270.37

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
A dangerous self-accelerating decomposition reaction and, under certain circumstances, explosion or fire can be caused by direct contact with incompatible substances or by thermal decomposition at and above the SADT (see Section 16). This product is stable at ambient temperatures but may decompose if exposed to temperatures above 158F (70C).
Conditions to Avoid:
Dust generation, excess heat, contamination.
Incompatibilities with Other Materials:
Strong oxidizing agents, reducing agents, strong acids, strong bases, polymerization catalysts.
Hazardous Decomposition Products:
Carbon monoxide, carbon dioxide, methane.
Hazardous Polymerization: Will not occur.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 80-43-3: SD8150000 LD50/LC50:
CAS# 80-43-3: Oral, mouse: LD50 = 5000 mg/kg; Oral, rat: LD50 = 4100 mg/kg; Oral, rat: LD50 = 6000 mg/kg.
Tests in rabbits with dicumyl peroxide as a 50% solution in corn oil resulted in slight irritation but no corneal damage.
Carcinogenicity:
Dicumyl peroxide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
  Other No information available.

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI O N
Risk Phrases:
R 36/38 Irritating to eyes and skin.
R 51/53 Toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
R 7 May cause fire.
Safety Phrases:
S 3/7 Keep container tightly closed in a cool,
well-ventilated place.
S 14A Keep away from acids, reducing agents and
polymerisation catalysts.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 80-43-3: 2
Canada
CAS# 80-43-3 is listed on Canada's DSL List.
CAS# 80-43-3 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 80-43-3 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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