Dicumyl peroxide (CAS 80-43-3)
Dicumyl peroxide (CAS 80-43-3) is an organic peroxide compound with molecular formula C18H22O2 and molecular weight 270.37. Also known as Dicumyl peroxide, DCP, (peroxybis(propane-2,2-diyl))dibenzene. It typically appears in liquid form.
Dicumyl Peroxide (DCP) is a highly important high-temperature crosslinking agent in the rubber and plastics industries. It holds an irreplaceable position in the vulcanization processes of wire and cable insulation (cross-linked polyethylene, XLPE), EVA foam for footwear, and Ethylene Propylene Diene Monomer (EPDM) rubber. It imparts excellent heat resistance, aging resistance, and electrical insulation properties to the polymers. Due to its relatively high decomposition temperature, DCP provides exceptional safety during processing, effectively preventing premature scorch.
Below you can find its complete physical and chemical properties, safety data, GHS hazard classifications, and a catalog of 48 products from 14 verified manufacturers.
CAS 80-43-3 is also known as:
- Dicumyl peroxide
- DCP
- (peroxybis(propane-2,2-diyl))dibenzene
- BIS(1-METHYL-1-PHENYLETHYL)PEROXIDE
- cumeneperoxide
- Dicumyl peroxyide
- BIS(A A-DIMETHYLBENZYL) PEROXIDE
- di-cup
- di-cupr
- di-cupt
- Cumene peroxide
- Di-α-cumyl peroxide
- Di-alpha-cumyl peroxide
CAS Number
80-43-3
Molecular Formula
C18H22O2
Molecular Weight
270.37
EINECS Number
201-279-3
MDL Number
MFCD00001582
BRN Number
1783398
Chemical Name
Dicumyl peroxide
Last Updated
7/10/2024
Aliases
Appearance
Colorless to pale yellow liquid
Appearance State
Liquid. Insoluble in water, soluble in most organic solvents.
Color
White
Odor
Slightly aromatic odor
Form
Liquid
Melting Point
39-41 (lit.)
Boiling Point
130 (dec.)
Flash Point
130 (dec.)
Density
1.56 @ 25 °C
Vapor Density
9.3 (air=1)
Vapor Pressure
15.4 mmHg @ 38°C
Refractive Index
1.5360
LogP Value
5.6 @ 25 °C
Merck Index
3175
Solubility
Slightly soluble in methanol, chloroform, DMSO
Water Solubility
insoluble
Solubility Detail
Insoluble in water, slightly soluble in most organic solvents.
Storage Conditions
Store at 2-8°C, protect from light and heat.
InChI Key
GQENBIWOBNPPGU-UHFFFAOYSA-N
GHS Hazard Symbols
Hazard Class
Signal Word
Warning
Hazard Symbols
O
Risk Codes
R7, R36, R43
UN Number
UN 3110
IARC Classification
Not Classified
WGK Germany
2
RTECS Number
JM0875000
Auto-ignition Temperature
N/A (thermal dec.)
TSCA Listed
Listed (Active)
Packing Group
II
Customs Code
2910299090
Occupational Exposure Band (OEB)
Not Specified
Occupational Exposure Limit (OEL)
Not Specified
Immediately Dangerous to Life or Health (IDLH)
Not Specified
Hazard Statements
H242,H317,H319Precautionary Statements
P210,P220,P234,P280,P302+P352,P305+P351+P338,P403+P235,P370+P378,P501Safety Statements
S14, S26, S36/37/39, S45
14 verified suppliers offering 48 products for Dicumyl peroxide (CAS 80-43-3). Compare equivalent grades across brands (e.g., Trigonox vs Luperox) by assay, physical form, and availability from trusted manufacturers and distributors worldwide.
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