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329541

Sigma-Aldrich

Dicumyl peroxide

98%

Synonym(s):

Bis(1-methyl-1-phenylethyl) peroxide, Bis(α,α-dimethylbenzyl) peroxide

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About This Item

Linear Formula:
[C6H5C(CH3)2]2O2
CAS Number:
80-43-3
Molecular Weight:
270.37
Beilstein:
2056090
EC Number:
201-279-3
MDL number:
MFCD00036227
UNSPSC Code:
12162002
PubChem Substance ID:
24859798
NACRES:
NA.23

vapor density

9.3 (vs air)

vapor pressure

15.4 mmHg ( 38 °C)

Assay

98%

form

solid

reaction suitability

reagent type: oxidant

mp

39-41 °C (lit.)

density

1.56 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

CC(C)(OOC(C)(C)c1ccccc1)c2ccccc2

InChI

1S/C18H22O2/c1-17(2,15-11-7-5-8-12-15)19-20-18(3,4)16-13-9-6-10-14-16/h5-14H,1-4H3

InChI key

XMNIXWIUMCBBBL-UHFFFAOYSA-N

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Application

Dicumyl peroxide (DCP) is used:
  • in vulcanization of rubber
  • as a crosslinking agent in the synthesis of polylactic acid composite fibers
  • in the preparation of polyethylene composites
  • in the synthesis of polyamide 112/ethylene vinyl acetate copolymer blends.

Signal Word

Danger

Hazard Statements

H242,H315,H319,H360D,H411

Hazard Classifications

Aquatic Chronic 2 - Eye Irrit. 2 - Org. Perox. F - Repr. 1B - Skin Irrit. 2

Storage Class Code

5.2 - Organic peroxides and self-reacting hazardous materials

WGK

WGK 3

Flash Point(F)

230.0 °F - closed cup

Flash Point(C)

110 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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For the preparation of polylactide (PLA)-based foams, it is commonly necessary to increase the melt strength of the polymer. Additives such as chain extenders (CE) or peroxides are often used to build up the molecular weight by branching or even
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Gas chromatography (GC) is the chemical analysis technique most widely used to separate and identify gas components, and it has been extensively applied in various gas analysis fields such as non-invasive medical diagnoses, indoor air quality monitoring, and outdoor environmental
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Thermoplastic vulcanizate (TPV) has excellent elastomeric properties and can be reprocessed multiple times. TPV is typically produced by using the dynamic vulcanization (DV) method in which rubber is crosslinked simultaneously with thermoplastics. Peroxide-crosslinked TPV can increase the compatibility between rubber
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