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80-43-3

Supplier Related Products Identification Chemical Properties Safety Data Raw materials And Preparation Products Hazard Information Material Safety Data Sheet(MSDS) Well-known Reagent Company Product Information

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Identification

Name
Dicumyl peroxide
CAS
80-43-3
Synonyms
2,5-DIMETHYL-2,5-DI(BENZOYLPEROXY)HEXANE
BIS(1-METHYL-1-PHENYLETHYL)PEROXIDE
BIS(A A-DIMETHYLBENZYL) PEROXIDE
BIS(ALPHA,ALPHA-DIMETHYLBENZYL) PEROXIDE
Curing agent DCP
DICUMYL PEROXIDE
Dicumyl peroxide(content>42%,with inert solid)
Dicumyl peroxide(technically pure)
LUPEROX(R) DCSC
VAROX 118
VAROX 230-XL
VAROX DCP-40C
VAROX DCP-40KE
VAROX DCP-R
activedicumylperoxide
alpha,alpha’-dicumylperoxide
alpha,alpha-dimethylbenzylperoxide
alpha-cumylperoxide
Bis(,-dimethylbenzyl)peroxide
bis(2-phenyl-2-propyl)peroxide
EINECS(EC#)
201-279-3
Molecular Formula
C18H22O2
MDL Number
MFCD00675945
Molecular Weight
270.37
MOL File
80-43-3.mol

Chemical Properties

Appearance
white powder
mp 
39-41 °C(lit.)

bp 
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

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.
Water Solubility 
insoluble
CAS DataBase Reference
80-43-3(CAS DataBase Reference)
EPA Substance Registry System
80-43-3(EPA Substance)

Safety Data

Hazard Codes 
O,Xi,N,Xn
Risk Statements 
R7:May cause fire.
R36/38:Irritating to eyes and skin .
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R36/37/38:Irritating to eyes, respiratory system and skin .
R20:Harmful by inhalation.
Safety Statements 
S14:Keep away from ... (incompatible materials to be indicated by the manufacturer) .
S3/7:Keep container tightly closed in a cool place .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S17:Keep away from combustible material .
RIDADR 
UN 3110 5.2

WGK Germany 
2

RTECS 
SD8150000


4.2
TSCA 
Yes
HazardClass 
5.2
PackingGroup 
II
HS Code 
29096000
Safety Profile
Mildly toxic by ingestion. See also PEROXIDES. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazardous Substances Data
80-43-3(Hazardous Substances Data)

Raw materials And Preparation Products

Hazard Information

General Description
White powder with a characteristic odor.
Reactivity Profile
The 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.

Material Safety Data Sheet(MSDS)

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