Chemical Safety Data Sheet MSDS / SDS
Dicumyl peroxide
Revision Date:2026-03-21Revision Number:1
Product identifier
- Product name: Dicumyl peroxide
- CBnumber: CB8211170
- CAS: 80-43-3
- EINECS Number: 201-279-3
- Synonyms: cumeneperoxide ;Dicumyl peroxide,99%
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses: For R&D use only. Not for medicinal, household or other use.
- Uses advised against: none
Company Identification
- Company: Chemicalbook
- Address: Building 1, Huihuang International, Shangdi 10th Street, Haidian District, Beijing
- Telephone: 010-86108875
GHS Label elements, including precautionary statements
-
Symbol(GHS)
- Signal wordDanger
P370+P378 In case of fire: Use … for extinction.
P308+P313 IF exposed or concerned: Get medical advice/attention.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P273 Avoid release to the environment.
P235 Keep cool.
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
Hazard statements
H242 Heating may cause a fire
H315 Causes skin irritation
H319 Causes serious eye irritation
H411 Toxic to aquatic life with long lasting effects
Substance
- Product name: Dicumyl peroxide
- Synonyms: cumeneperoxide ;Dicumyl peroxide,99%
- CAS: 80-43-3
- EC number: 201-279-3
- MF: C18H22O2
- MW: 270.37
General advice
Show this safety data sheet to the doctor in attendance.
If inhaled
After inhalation: fresh air. Call in physician.
In case of skin contact
In case of skin contact: Take off immediately all contaminated clothing. Rinse skin with water/ shower. Consult a physician.
In case of eye contact
After eye contact: rinse out with plenty of water. Call in ophthalmologist. Remove contact lenses.
If swallowed
After swallowing: immediately make victim drink water (two glasses at most). Consult a physician.
Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling (see section 2) and/or in section 11
Protection of first-aiders
For personal protection see section 8.
Notes to physician
No data available
Suitable extinguishing media
Water Foam Carbon dioxide (CO2) Dry powder
Unsuitable extinguishing media
For this substance/mixture no limitations of extinguishing agents are given.
Specific hazards during fire fighting
Combustible. Vapours are heavier than air and may spread along floors. Forms explosive mixtures with air on intense heating. Development of hazardous combustion gases or vapours possible in the event of fire.
Hazardous combustion products
Carbon oxides
Specific extinguishing methods
Remove container from danger zone and cool with water. Prevent fire extinguishing water from contaminating surface water or the ground water system.
Special protective equipment for fire-fighters
Stay in danger area only with self-contained breathing apparatus. Prevent skin contact by keeping a safe distance or by wearing suitable protective clothing.
NFPA 704
2
1
1
| HEALTH | 2 | Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury (e.g. diethyl ether, ammonium phosphate, iodine) | |
| FIRE | 1 | Materials that require considerable preheating, under all ambient temperature conditions, before ignition and combustion can occur. Includes some finely divided suspended solids that do not require heating before ignition can occur. Flash point at or above 93.3 °C (200 °F). (e.g. mineral oil, ammonia) | |
| REACT | 1 | Normally stable, but can become unstable at elevated temperatures and pressures (e.g. propene) | |
| SPEC. HAZ. |
Personal precautions, protective equipment and emergency procedures
Advice for non-emergency personnel: Avoid inhalation of dusts. Avoid substance contact. Ensure adequate ventilation. Evacuate the danger area, observe emergency procedures, consult an expert. Advice for emergency responders: For personal protection see section 8.
Environmental precautions
Do not let product enter drains.
Methods and materials for containment and cleaning up
Cover drains. Collect, bind, and pump off spills. Observe possible material restrictions (see sections 7 and 10). Take up carefully. Dispose of properly. Clean up affected area. Avoid generation of dusts.
Handling
Advice on protection against fire and explosionKeep away from open flames, hot surfaces and sources of ignition.
Advice on safe handling
Work under hood. Do not inhale substance/mixture.
Avoidance of contact
Strong acids Strong bases Strong oxidizing agents
Storage
Further information on storage conditionsTightly closed. Keep locked up or in an area accessible only to qualified or authorised persons. Separately or together with other organic peroxides only and away from sources of ignition and heat.
Storage class
5.2, Organic peroxides and self-reacting hazardous materials
Recommended storage temperature
2 - 8 °C
Ingredients with workplace control parameters
Contains no substances with occupational exposure limit values.
Engineering measures
No data available
Personal protective equipment
Respiratory protectionrequired when dusts are generated.
Our recommendations on filtering respiratory protection are based on the following standards: DIN EN 143, DIN 14387 and other accompanying standards relating to the used respiratory protection system.
Recommended Filter type
Our recommendations on filtering respiratory protection are based on the following standards: DIN EN 143, DIN 14387 and other accompanying standards relating to the used respiratory protection system.
Filter type P3
The entrepeneur has to ensure that maintenance, cleaning and testing of respiratory protective devices are carried out according to the instructions of the producer. These measures have to be properly documented.
Eye/face protection
The entrepeneur has to ensure that maintenance, cleaning and testing of respiratory protective devices are carried out according to the instructions of the producer. These measures have to be properly documented.
Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Safety glasses
Skin and body protection
Safety glasses
protective clothing
Hand protection
Material
Nitrile rubber
Break through time
480 min
Glove thickness
0.11 mm
Protective index
Splash contact
Manufacturer
KCL 741 L
Material
Nitrile rubber
Break through time
480 min
Glove thickness
0.11 mm
Protective index
Full contact
Manufacturer
KCL 741 L
Remarks
This recommendation applies only to the product stated in the safety data sheet, supplied by us and for the designated use. When dissolving in or mixing with other substances and under conditions deviating from those stated in EN 16523-1 please contact the supplier of CE-approved gloves (e.g. KCL GmbH, D- 36124 Eichenzell, Internet: www.kcl.de).
Hygiene measures
Immediately change contaminated clothing. Apply preventive skin protection. Wash hands and face after working with substance.
Information on basic physicochemical properties
- Boiling point or initial boiling point and boiling range130°C
- Physical stateflakes
- SolubilityChloroform (Slightly), DMSO (Slightly), Methanol (Slightly)
- Particle characteristics Particle sizeNo data available
- Molecular weight270.37 g/mol
- Oxidizing propertiesNo data available
- Explosive propertiesNot explosive
Method: Regulation (EC) No. 440/2008, Annex, A.14 - Flow timeNo data available
- Viscosity, kinematicNo data available
- Viscosity, dynamicNo data available
- Autoignition temperatureNo data available
Decomposition tempera-: 80 °C ture Method Self-Accelerating decomposition temperature (SADT): UN-Test H.4
Self-Accelerating decomposition temperature (SADT): 90 °C - Partition coefficient: n-octanol/waterlog Pow: 5.6 (25 °C)
Method: OECD Test Guideline 117 - Water solubility0.00043 g/l slightly soluble (25 °C)
- Density1.107 g/cm3 (20 °C)
Method: DIN 53217 - Relative density1.56 g/mL at 25 °C (lit.)
- Relative vapor density9.3 (vs air)
- Vapor pressure< 0.1 hPa (60 °C)
Method: Regulation (EC) No. 440/2008, Annex, A.4 - Lower explosion limit / Lower flammability limitNo data available
- Upper explosion limit / Upper flammability limitNo data available
- Burning rateNo data available
- Evaporation rateNo data available
- Flash point110 °C
Method: closed cup - Melting point/ range39.8 °C (1,013 hPa)
Method: Regulation (EC) No. 440/2008, Annex, A.1 : Decomposes below the boiling point. - pH5
Method: OECD Test Guideline 105 - pHNo data available
- Odor ThresholdNo data available
- OdorNo data available
- Colorbeige
- Appearancecrystalline
Reactivity
Forms explosive mixtures with air on intense heating. A range from approx. 15 Kelvin below the flash point is to be rated as critical. The following applies in general to flammable organic substances and mixtures: in correspondingly fine distribution, when whirled up a dust explosion potential may generally be assumed.
Chemical stability
The product is chemically stable under standard ambient conditions (room temperature) .
Possibility of hazardous reactions
No data available
Conditions to avoid
Strong heating.
Incompatible materials
Strong acids Strong bases Strong oxidizing agents
Hazardous decomposition products
In the event of fire: see section 5
11.1 Information on toxicological effects
Acute toxicityLD50 Oral - Rat - male and female - >= 2,000 mg/kg (OECD Test Guideline 401)
Inhalation: No data available
LD50 Dermal - Rat - male and female - > 2,000 mg/kg (OECD Test Guideline 402)
Skin corrosion/irritation
Inhalation: No data available
LD50 Dermal - Rat - male and female - > 2,000 mg/kg (OECD Test Guideline 402)
Skin - Rabbit
Result: Skin irritation - 4 h (OECD Test Guideline 404)
Serious eye damage/eye irritation
Result: Skin irritation - 4 h (OECD Test Guideline 404)
Remarks: Causes serious eye irritation.
(Regulation (EC) No 1272/2008, Annex VI)
Respiratory or skin sensitization
(Regulation (EC) No 1272/2008, Annex VI)
Local lymph node assay (LLNA) - Mouse
Result: Does not cause skin sensitisation.
(OECD Test Guideline 429)
Germ cell mutagenicity
Result: Does not cause skin sensitisation.
(OECD Test Guideline 429)
Test Type: Hamster
Test system: Lungs
Metabolic activation: with and without metabolic activation
Method: OECD Test Guideline 471
Result: negative
Carcinogenicity
Test system: Lungs
Metabolic activation: with and without metabolic activation
Method: OECD Test Guideline 471
Result: negative
Classified based on available data. For more details, see section 2
Reproductive toxicity
May damage the unborn child.
Specific target organ toxicity - single exposure
Classified based on available data. For more details, see section 2
Specific target organ toxicity - repeated exposure
Classified based on available data. For more details, see section 2
Aspiration hazard
Classified based on available data. For more details, see section 2
11.2 Additional Information
Repeated dose toxicity - Rat - male and female - No observed adverse effect level - 60 mg/kg - Lowest observed adverse effect level - 200 mg/kg
RTECS: SD8150000
To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.
Systemic effects:
After uptake of large quantities: constipation
Other information
Organic peroxides generally show a more or less strongly pronounced irritant effect on skin and mucous membranes. In some cases it has displayed a sensitising effect with allergic manifestations in predisposed persons. Mutagenic properties are asso- ciated with some compounds. The product should be handled with the care due when dealing with chemicals.
Further data:
Handle in accordance with good industrial hygiene and safety practice.
RTECS: SD8150000
To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.
Systemic effects:
After uptake of large quantities: constipation
Other information
Organic peroxides generally show a more or less strongly pronounced irritant effect on skin and mucous membranes. In some cases it has displayed a sensitising effect with allergic manifestations in predisposed persons. Mutagenic properties are asso- ciated with some compounds. The product should be handled with the care due when dealing with chemicals.
Further data:
Handle in accordance with good industrial hygiene and safety practice.
Ecotoxicity
Components:
Bis(α,α-dimethylbenzyl) peroxide:
Toxicity to daphnia and other aquatic invertebratesEC50 (Daphnia magna (Water flea)): > 0.39 mg/l End point: Immobilization Exposure time: 48 h Test Type: semi-static test Analytical monitoring: yes Method: OECD Test Guideline 202 GLP: yes
Toxicity to algae/aquatic plants
EC50 (Pseudokirchneriella subcapitata (algae)): > 20 mg/l Exposure time: 72 h Test Type: Growth inhibition Analytical monitoring: yes Method: OECD Test Guideline 201 GLP: yes NOEC (Pseudokirchneriella subcapitata (algae)): 3.2 mg/l Exposure time: 72 h Test Type: Growth inhibition Analytical monitoring: yes Method: OECD Test Guideline 201 GLP: yes
Toxicity to daphnia and other aquatic invertebrates (Chronic toxicity)
EC50 (Daphnia magna (Water flea)): 0.231 mg/l Exposure time: 21 d Test Type: semi-static test Analytical monitoring: yes Method: OECD Test Guideline 211 GLP: yes
Toxicity to microorganisms
NOEC (Sludge Treatment): > 1,000 mg/l Exposure time: 30 min Test Type: Respiration inhibition Method: OECD Test Guideline 209 GLP: yes
Ecotoxicology Assessment
Acute aquatic toxicityToxic to aquatic life.
Chronic aquatic toxicity
Toxic to aquatic life with long lasting effects.
Persistence and degradability
Components:
Bis(α,α-dimethylbenzyl) peroxide:
Biodegradabilityaerobic Inoculum: activated sludge Concentration: 100 mg/l Result: Not biodegradable Biodegradation: 0 % Exposure time: 28 d Method: Regulation (EC) No. 440/2008, Annex, C.4-D GLP: yes
Bioaccumulative potential
Components:
Bis(α,α-dimethylbenzyl) peroxide:
BioaccumulationSpecies: Cyprinus carpio (Carp) Bioconcentration factor (BCF): 137 - 1,470 Exposure time: 56 d Concentration: 0.01 mg/l Method: OECD Test Guideline 305C
Partition coefficient: noctanol/water
log Pow: 5.6 (25 °C) Method: OECD Test Guideline 117 Remarks: Potential bioaccumulation
Mobility in soil
Components:
Bis(α,α-dimethylbenzyl) peroxide:
Stability in soilRemarks: No data available
Other adverse effects
No data available
Disposal methods
Waste from residuesOffer surplus and non-recyclable solutions to a licensed disposal company.
International Regulations
IATA-DGR
UN/ID No. : UN 3110
Proper shipping name : Organic peroxide type F, solid (Dicumyl peroxide)
Class : 5.2
Packing group : Not assigned by regulation
Labels : Division 5.2 - Organic peroxides, Handling Label Keep Away From Heat
Packing instruction (cargo aircraft) : 570
Packing instruction (passenger aircraft) : 570
Proper shipping name : Organic peroxide type F, solid (Dicumyl peroxide)
Class : 5.2
Packing group : Not assigned by regulation
Labels : Division 5.2 - Organic peroxides, Handling Label Keep Away From Heat
Packing instruction (cargo aircraft) : 570
Packing instruction (passenger aircraft) : 570
IMDG-Code
UN number : UN 3110
Proper shipping name : ORGANIC PEROXIDE TYPE F, SOLID (DICUMYL PEROXIDE)
Class : 5.2
Packing group : Not assigned by regulation
Labels : 5.2
EmS Code : F-J, S-R
Marine pollutant : yes
Proper shipping name : ORGANIC PEROXIDE TYPE F, SOLID (DICUMYL PEROXIDE)
Class : 5.2
Packing group : Not assigned by regulation
Labels : 5.2
EmS Code : F-J, S-R
Marine pollutant : yes
Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Not applicable for product as supplied.
National Regulations
JT/T 617
UN number : UN 3110
Proper shipping name : ORGANIC PEROXIDE TYPE F, SOLID
Class : 5.2
Packing group : Not assigned by regulation
Labels : 5.2
Environmentally hazardous : no
Proper shipping name : ORGANIC PEROXIDE TYPE F, SOLID
Class : 5.2
Packing group : Not assigned by regulation
Labels : 5.2
Environmentally hazardous : no
Special precautions for user
The transport classification(s) provided herein are for informational purposes only, and solely based upon the properties of the unpackaged material as it is described within this Safety Data Sheet. Transportation classifications may vary by mode of transportation, package sizes, and variations in regional or country regulations.
National regulatory information
Regulations on Safety Management of Hazardous Chemicals
Catalogue of Hazardous Chemicals
Listed
Identification of Major Hazard Installations for Hazardous Chemicals (GB 18218)
No. / Code Chemical name / Category Threshold quantity
W7.2 Organic peroxides 50 t
Hazardous Chemicals for Priority Management
Not listed under SAWS
Catalogue of Specially Controlled Hazardous
Not listed Chemicals
List of Explosive Precursors
Listed
Regulations on Labour Protection in Workplaces where Toxic Substances are Used
Catalogue of Highly Toxic Chemicals
Not listed
Regulation of Environmental Management on the First Import of Chemicals and the Import and Export of Toxic Chemicals
China Severely Restricted Toxic Chemicals for Import and Export
Not listed
Regulation on the Administration of Precursor Chemicals
Catalogue and Classification of Precursor Chemicals
Not listed
Regulations on the Administration of Controlled Chemicals
List of Controlled Chemicals
Not listed
Regulations of Ozone Depleting Substances Management
List of Controlled Ozone Depleting Substances
Not listed
List of Controlled Ozone Depleting Substances Import and Export
Not listed
Environmental Protection Law
List of Priority Controlled Chemicals
Not listed
List of Key Controlled New Pollutants
Not listed
Full text of other abbreviations
AIIC - Australian Inventory of Industrial Chemicals
ANTT - National Agency forTransport by Land of Brazil
ASTM - American Society for the Testing of Materials
bw - Body weight
CMR - Carcinogen, Mutagen or Reproductive Toxicant
DIN -Standard of the German Institute for Standardisation
DSL - Domestic SubstancesList (Canada)
ECx - Concentration associated with x% response
ELx - Loading rate associated with x% response
EmS - Emergency Schedule
ENCS - Existing and NewChemical Substances (Japan)
ErCx - Concentration associated with x% growth rate response
ERG - Emergency Response Guide
GHS - Globally Harmonized System
GLP - Good Laboratory Practice
IARC - International Agency for Research on Can- cer
IATA - International Air Transport Association
IBC - International Code for theConstruction and Equipment of Ships carrying Dangerous Chemicals in Bulk
IC50 -Half maximal inhibitory concentration
ICAO - International Civil Aviation Organiza- tion
IECSC - Inventory of Existing Chemical Substances in China
IMDG - Interna- tional Maritime Dangerous Goods
IMO - International Maritime Organization
ISHL -Industrial Safety and Health Law (Japan)
ISO - International Organisation forStandardization
KECI - Korea Existing Chemicals Inventory
LC50 - Lethal Concen- tration to 50 % of a test population
LD50 - Lethal Dose to 50% of a test population (Median Lethal Dose)
MARPOL - International Convention for the Prevention of Pol- lution from Ships
n.o.s. - Not Otherwise Specified
Nch - Chilean Norm
NO(A)EC -No Observed (Adverse) Effect Concentration
NO(A)EL - No Observed (Adverse) Ef- fect Level
NOELR - No Observable Effect Loading Rate
NOM - Official MexicanNorm
NTP - National Toxicology Program
NZIoC - New Zealand Inventory of Chem- icals
OECD - Organization for Economic Co-operation and Development
OPPTS - Of- fice of Chemical Safety and Pollution Prevention
PBT - Persistent, Bioaccumulative and Toxic substance
PICCS - Philippines Inventory of Chemicals and Chemical Sub- stances
(Q)SAR - (Quantitative) Structure Activity Relationship
REACH - Regulation (EC) No 1907/2006 of the European Parliament and of the Council concerning theRegistration, Evaluation, Authorisation and Restriction of Chemicals
SADT - Self-Accelerating Decomposition Temperature
SDS - Safety Data Sheet
TCSI - TaiwanChemical Substance Inventory
TDG - Transportation of Dangerous Goods
TECI -Thailand Existing Chemicals Inventory
TSCA - Toxic Substances Control Act (UnitedStates)
UN - United Nations
UNRTDG - United Nations Recommendations on theTransport of Dangerous Goods
vPvB - Very Persistent and Very Bioaccumulative
WHMIS - Workplace Hazardous Materials Information System
ANTT - National Agency forTransport by Land of Brazil
ASTM - American Society for the Testing of Materials
bw - Body weight
CMR - Carcinogen, Mutagen or Reproductive Toxicant
DIN -Standard of the German Institute for Standardisation
DSL - Domestic SubstancesList (Canada)
ECx - Concentration associated with x% response
ELx - Loading rate associated with x% response
EmS - Emergency Schedule
ENCS - Existing and NewChemical Substances (Japan)
ErCx - Concentration associated with x% growth rate response
ERG - Emergency Response Guide
GHS - Globally Harmonized System
GLP - Good Laboratory Practice
IARC - International Agency for Research on Can- cer
IATA - International Air Transport Association
IBC - International Code for theConstruction and Equipment of Ships carrying Dangerous Chemicals in Bulk
IC50 -Half maximal inhibitory concentration
ICAO - International Civil Aviation Organiza- tion
IECSC - Inventory of Existing Chemical Substances in China
IMDG - Interna- tional Maritime Dangerous Goods
IMO - International Maritime Organization
ISHL -Industrial Safety and Health Law (Japan)
ISO - International Organisation forStandardization
KECI - Korea Existing Chemicals Inventory
LC50 - Lethal Concen- tration to 50 % of a test population
LD50 - Lethal Dose to 50% of a test population (Median Lethal Dose)
MARPOL - International Convention for the Prevention of Pol- lution from Ships
n.o.s. - Not Otherwise Specified
Nch - Chilean Norm
NO(A)EC -No Observed (Adverse) Effect Concentration
NO(A)EL - No Observed (Adverse) Ef- fect Level
NOELR - No Observable Effect Loading Rate
NOM - Official MexicanNorm
NTP - National Toxicology Program
NZIoC - New Zealand Inventory of Chem- icals
OECD - Organization for Economic Co-operation and Development
OPPTS - Of- fice of Chemical Safety and Pollution Prevention
PBT - Persistent, Bioaccumulative and Toxic substance
PICCS - Philippines Inventory of Chemicals and Chemical Sub- stances
(Q)SAR - (Quantitative) Structure Activity Relationship
REACH - Regulation (EC) No 1907/2006 of the European Parliament and of the Council concerning theRegistration, Evaluation, Authorisation and Restriction of Chemicals
SADT - Self-Accelerating Decomposition Temperature
SDS - Safety Data Sheet
TCSI - TaiwanChemical Substance Inventory
TDG - Transportation of Dangerous Goods
TECI -Thailand Existing Chemicals Inventory
TSCA - Toxic Substances Control Act (UnitedStates)
UN - United Nations
UNRTDG - United Nations Recommendations on theTransport of Dangerous Goods
vPvB - Very Persistent and Very Bioaccumulative
WHMIS - Workplace Hazardous Materials Information System
Disclaimer:
The information in this MSDS is only applicable to the specified product, unless otherwise specified, it is not applicable to the mixture of this product and other substances. This MSDS only provides information on the safety of the product for those who have received the appropriate professional training for the user of the product. Users of this MSDS must make independent judgments on the applicability of this SDS. The authors of this MSDS will not be held responsible for any harm caused by the use of this MSDS.