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Dicumyl peroxide

Dicumyl peroxide Basic information
Product Name:Dicumyl peroxide
Synonyms:Dicumyl peroxide[content ≤52%, inert solids ≥48%];alpha,alpha-dimethylbenzylperoxide;alpha-cumylperoxide;Bis(,-dimethylbenzyl)peroxide;bis(2-phenyl-2-propyl)peroxide;cumeneperoxide;cumylperoxide;Di(,-dime-thylbenzyl)peroxide
CAS:80-43-3
MF:C18H22O2
MW:270.37
EINECS:201-279-3
Product Categories:Additives for Plastic;Organics
Mol File:80-43-3.mol
Dicumyl peroxide Structure
Dicumyl peroxide Chemical Properties
Melting point 39-41 °C(lit.)
Boiling point 130°C
density 1.56 g/mL at 25 °C(lit.)
vapor density 9.3 (vs air)
vapor pressure 15.4 mm Hg ( 38 °C)
refractive index 1.5360
Fp >230 °F
storage temp. 2-8°C
form flakes
color White
Water Solubility insoluble
Hydrolytic Sensitivity4: no reaction with water under neutral conditions
BRN 2056090
Stability:Stability Reacts violently with reducing agents, heavy metals, concentrated acids, concentrated bases. May ignite organic materials on contact. May decompose violently upon exposure to sunlight or if heated. Incompatible with strong oxidizing agents.
CAS DataBase Reference80-43-3(CAS DataBase Reference)
EPA Substance Registry SystemDicumyl peroxide (80-43-3)
Safety Information
Hazard Codes O,Xi,N,Xn
Risk Statements 7-36/38-51/53-36/37/38-20
Safety Statements 14-3/7-36/37/39-61-14A-45-26-36-17
RIDADR UN 3110 5.2
WGK Germany 2
RTECS SD8150000
4.2
TSCA Yes
HazardClass 5.2
PackingGroup II
HS Code 29096000
Hazardous Substances Data80-43-3(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 4100 mg/kg
MSDS Information
ProviderLanguage
Dicumyl peroxide English
ACROS English
SigmaAldrich English
Dicumyl peroxide Usage And Synthesis
Chemical Propertieswhite powder
Chemical PropertiesDicumyl peroxide is a crystalline solid that melts at 42°C. It is insoluble in water and soluble in vegetable oil and organic solvents . It is used as a high-temperature catalyst in production of polystyrene plastics. The deflagration hazard potential of this peroxide was tested using 5 g of igniter in the revised time–pressure test, but no pressure rise was produced . Noller et al. found it to be an intermediate fire hazard.
General DescriptionWhite powder with a characteristic odor.
Reactivity ProfileThe explosive instability of the lower dialkyl peroxides (e.g., dimethyl peroxide) and 1,1-bis-peroxides decreases rapidly with increasing chain length and degree of branching, the di-tert-alkyl derivatives being amongst the most stable class of peroxides. Though many 1,1-bis-peroxides have been reported, few have been purified because of the higher explosion hazards compared with the monofunctional peroxides. Dicumyl peroxide is unlikely that this derivative would be particularly unstable compared to other peroxides in it's class, Bretherick 2nd ed., p 44 1979.
Safety ProfileMildly toxic by ingestion. See also PEROXIDES. When heated to decomposition it emits acrid smoke and irritating fumes.
Purification MethodsCrystallise the peroxide from 95% EtOH (charcoal). Store it at 0o. Potentially EXPLOSIVE. [Beilstein 6 IV 3220.]
Tag:Dicumyl peroxide(80-43-3) Related Product Information
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