Description

Bis(2,4-dichlorobenzoyl) peroxide (CAS No. 133-14-2) is a high-purity organic peroxide widely used as a radical initiator in polymerization reactions. With the molecular formula C₁₄H₆Cl₄O₄, this compound is characterized by its stability under controlled conditions and its ability to decompose thermally to generate free radicals. It is supplied as a white to off-white crystalline powder, ensuring consistent performance in industrial and research applications. Suitable for use in crosslinking, curing, and polymer synthesis, this reagent is stored under refrigeration to maintain its efficacy. Ideal for researchers and chemists requiring precise radical initiation, it is packaged in amber glass vials or sealed containers to prevent degradation from light and moisture.

Properties

• CAS Number: 133-14-2
• Complexity: 382
• IUPAC Name: (2,4-dichlorobenzoyl) 2,4-dichlorobenzenecarboperoxoate
• InChI: InChI=1S/C14H6Cl4O4/c15-7-1-3-9(11(17)5-7)13(19)21-22-14(20)10-4-2-8(16)6-12(10)18/h1-6H
• InChI Key: WRXCBRHBHGNNQA-UHFFFAOYSA-N
• Exact Mass: 379.899069
• Molecular Formula: C14H6Cl4O4
• Molecular Weight: 380.0
• SMILES: C1=CC(=C(C=C1Cl)Cl)C(=O)OOC(=O)C2=C(C=C(C=C2)Cl)Cl
• Topological: 52.6
• Monoisotopic Mass: 377.902019
• Physical Description: Not shipped or stored at concentrations higher than 75%, because of explosion hazard. Mixed with water.
• Synonyms: 133-14-2, 2,4-Dichlorobenzoyl peroxide, Bis(2,4-dichlorobenzoyl) peroxide, Luperco CST, Cadox TDP, Siloprene CL 40, Cadox TS, TC 2 (peroxide), PEROXIDE, BIS(2,4-DICHLOROBENZOYL), Cadox TS 40,50, Bis(2,4-dichlorobenzoyl)peroxide, EINECS 205-094-9, BRN 2008711, 0QC93Y0L96, DCLBP 50PSI, PERKADOX PD 50S, CADOX TS50, EC 205-094-9, ELASTOSIL AUX CROSSLINKER E, 4-09-00-01001 (Beilstein Handbook Reference), Di-2,4-dichlorobenzoyl peroxide, >75% with water, 2,4-DICHLOROBIBENZOYL PEROXIDE, Perkadox PD, Peroxide Curing Agent, NOVIPER DB 50, 2,4dichlorobenzoyl peroxide, Bis(2,4dichlorobenzoyl)peroxide, Di(2,4dichlorobenzoyl) peroxide, Peroxide, bis(2,4dichlorobenzoyl), Bis(2,4dichlorophenyl)peroxyanhydride, O,O’,P,P’Tetrachlorodibenzoyl peroxide, Di2,4dichlorobenzoyl peroxide, >75% with water, 205-094-9, (2,4-dichlorobenzoyl) 2,4-dichlorobenzenecarboperoxoate, 2,4-Dichlorobenzoylperoxide, DTXSID4044539, 2,4-dichlorobenzenecarboperoxoic acid [(2,4-dichlorophenyl)-oxomethyl] ester, TC 2, UNII-0QC93Y0L96, CADOX TS 50, SCHEMBL15385, Di-2,4-dichlorobenzoyl peroxide, >75% with water [Forbidden], AKOS015849996, Bis(2,4-dichlorophenyl)peroxyanhydride, DB-005856, NS00009864, O,O’,P,P’-TETRACHLORODIBENZOYL PEROXIDE, EN300-1588460, A806566, Q27237102, 2,4-dichlorobenzoyl 2,4-dichlorobenzene-1-carboperoxoate, peroxide, bis(2,4-dichlorobenzoyl);bis(2,4-dichlorobenzoyl) peroxide;bis(2,4-dichlorophenyl)peroxyanhydride;peroxide, bis(2,4-dichlorobenzoyl) bis(2,4-dichlorobenzoyl) peroxide bis(2,4-dichlorophenyl)peroxyanhydride

Application

Bis(2,4-dichlorobenzoyl) peroxide is primarily used as a free-radical initiator in the polymerization of vinyl monomers, such as styrene and acrylates. It is also employed in the curing of unsaturated polyester resins and as a crosslinking agent for elastomers. This peroxide is valued for its controlled decomposition rate, making it suitable for high-temperature applications. Additionally, it finds use in specialty chemical synthesis where selective radical generation is required.

Safety and Hazards

GHS Hazard Statements

• H241 (23.7%): Heating may cause a fire or explosion [Danger Self-reactive substances and mixtures; Organic peroxides]
• H242 (76.3%): Heating may cause a fire [Danger Self-reactive substances and mixtures; Organic peroxides]
• H317 (28.9%): May cause an allergic skin reaction [Warning Sensitization, Skin]
• H360 (27.2%): May damage fertility or the unborn child [Danger Reproductive toxicity]
• H360F (16.7%): May damage fertility [Danger Reproductive toxicity]

Precautionary Statements

• P203, P210, P234, P235, P240, P261, P272, P280, P302+P352, P318, P321, P333+P317, P362+P364, P370+P378, P370+P380+P375[+P378], P403, P405, P410, P411, P420, and P501

Hazard Classes and Categories

• Org. Perox. B (23.7%)
• Org. Perox. D (76.3%)
• Skin Sens. 1 (28.9%)
• Repr. 1B (27.2%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.