Description

Tert-butyl cumene peroxide (CAS No. 3457-61-2) is a high-purity organic peroxide with the molecular formula C₁₃H₂₀O₂, widely used as a radical initiator in polymerization reactions. This compound, also known by its IUPAC name 2-tert-butylperoxypropan-2-ylbenzene, is a stable yet highly reactive peroxide suitable for industrial and research applications. It is available in liquid form with exceptional purity, ensuring consistent performance in free-radical processes. Tert-butyl cumene peroxide is commonly employed in the production of polymers, resins, and elastomers, where controlled decomposition is critical for initiating polymerization. Its well-balanced reactivity makes it ideal for both high-temperature and low-temperature applications. Store in a cool, dry place away from incompatible materials, and handle with appropriate safety precautions due to its peroxide nature.

Properties

• CAS Number: 3457-61-2
• Complexity: 185
• IUPAC Name: (1-tert-butylperoxy-1-methyl-ethyl)benzene
• InChI: InChI=1S/C13H20O2/c1-12(2,3)14-15-13(4,5)11-9-7-6-8-10-11/h6-10H,1-5H3
• InChI Key: BIISIZOQPWZPPS-UHFFFAOYSA-N
• Exact Mass: 208.146329876
• Molecular Formula: C13H20O2
• Molecular Weight: 208.30
• SMILES: CC(C)(C)OOC(C)(C)C1=CC=CC=C1
• Topological: 18.5
• Monoisotopic Mass: 208.146329876
• Physical Description: Liquid
• Synonyms: tert-Butyl cumyl peroxide, 3457-61-2, Luperco 801-XL, Peroxide, 1,1-dimethylethyl 1-methyl-1-phenylethyl, J78XB9M8IR, tert-Butyl alpha,alpha-dimethylbenzyl peroxide, tert-butyl-cumyl peroxide, EINECS 222-389-8, tert-Butyl cumene peroxide, TERT-BUTYLCUMENEPEROXIDE, DTXSID9063039, EC 222-389-8, 1,1-Dimethylethyl 1-methyl-1-phenylethyl peroxide, TERT-BUTYL CUMYL PEROXIDE, (TECHNICALLY PURE), TERT-BUTYL CUMYL PEROXIDE, [TECHNICALLY PURE], PERBUTYL C, PEROXIMON 166, TRIGONOX T 40, LUPERSOL 801, DTXCID6038875, 7-(TERT-BUTYLPEROXY)CUMENE, Peroxide, tert-butyl alpha,alpha-dimethylbenzyl, TERT-BUTYL 1-METHYL-1-PHENYLETHYL PEROXIDE, t-Butyl cumyl peroxide, 2-tert-butylperoxypropan-2-ylbenzene, Kayabutyl C, Trigonox T, Luperox 801, Cumyl tert-butyl peroxide, tert-Butyl .alpha.,.alpha.-dimethylbenzyl peroxide, UNII-J78XB9M8IR, 1,1-Dimethylethyl 1-methyl-1-phenylethyl Peroxide (Technical Grade), Tert.butylcumylperoxide, tert.-butylcumyl peroxide, tert.butyl cumyl peroxide, SCHEMBL22352, 30026-92-7, SCHEMBL28577646, 1-((1,1-Dimethylethyl)phenyl)-1-methylethyl hydroperoxide, Hydroperoxide, 1-((1,1-dimethylethyl)phenyl)-1-methylethyl, DB-257028, NS00002405, 1,1-Dimethylethyl-1-methyl-1-phenylethyl peroxide, Peroxide, tert-butyl .alpha.,.alpha.-dimethylbenzyl, Q27281299

Application

Tert-butyl cumene peroxide is primarily used as a free-radical initiator in the polymerization of styrene, acrylics, and other vinyl monomers. It is favored in the production of thermoset resins and elastomers due to its controlled decomposition kinetics. Additionally, it serves as a crosslinking agent in polyethylene and other polyolefin modifications. This peroxide is also utilized in organic synthesis for radical-mediated transformations.

Safety and Hazards

GHS Hazard Statements

• H226: Flammable liquid and vapor [Warning Flammable liquids]
• H242: Heating may cause a fire [Danger Self-reactive substances and mixtures; Organic peroxides]
• H302: Harmful if swallowed [Warning Acute toxicity, oral]

Precautionary Statements

• P210, P233, P234, P235, P240, P241, P242, P243, P264, P270, P280, P301+P317, P303+P361+P353, P330, P370+P378, P403, P403+P235, P410, P411, P420, and P501

Hazard Classes and Categories

• Org. Perox. E (100%)
• Skin Irrit. 2 (100%)
• Skin Sens. 1B (28.1%)
• Aquatic Chronic 2 (100%)

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