Butyl Peroxybenzoate

DOT Label Organic Peroxide UN 2097 for technical pnre or concentrated 75% UN 2098 for concentrated 75% in solution UN 2890 for 50% with inorganic solid Formula C11H14O3 MW 194.2 CAS [614-45-9] 

A light yellow liqnid with a mild aromatic smell bp 112°C (233.6°F) (explodes) freezes at 9°C (48.2°F) density 1.023 at 20°C (68°F) soluble in organic solvents, insoluble in water. 

It has been reported to canse tnmors (blood) in mice. Its carcinogenic actions on hnmans are unknown. 

Highly reactive and oxidizing compound with moderate flammability flash point (open cnp) 107-110°C (224.6-230°F) autoignition temperature not reported. 

It forms an explosive mixture with air the explosive range not reported. It is not sensitive to shock but is heat sensitive. It explodes on heating self-accelerating decomposition temperature 60°C (140°F). 

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The chemistry of peroxyesters (38) also commonly called pcrcsters has been reviewed by Sawaki,199 Bouillion el al.m and Singer.194 The peroxyesters are sources of alkoxy and acyloxy radicals (Scheme 3.32). Most commonly encountered peroxyesters are derivatives of /-alkyl hydroperoxides (< .g. /-butyl peroxybenzoate, BPB). 

An example of the differences in measurement of onset temperature, To, and heat of decomposition, AHd, for f-butyl peroxybenzoate obtained from several types of equipment is shown on Table 2.2 [17,31]. It is clear that the observed value of T0, apart from the chemical properties of the sample, depends... 

Concentrated organic peroxides, such as f-butyl peroxybenzoate (TBPB), have an F value of about 100 to 150 kj/kg. These compounds can produce a runaway ending in a deflagration. Dilution of the peroxide with the proper solvent will result in a considerable decrease of the F value because of the decrease in concentration of the active component and the decrease in the maximum temperature due to heating and evaporation of the solvent. 

In contrast, Tsuji s group coupled 2-methylfuran with ethyl acrylate to afford adduct 6 via a Pd-catalyzed reaction using tm-butyl peroxybenzoate to reoxidize Pd(0) to Pd(II) [16]. The palladation of 2-methylfuran took place at the electron-rich C(5) in a fashion akin to electrophilic aromatic substitution. The perbenzoate acted as a hydrogen acceptor. 

Butyl oleate, 10 492 y-Butyloxycarbonyl-L-leucine anhydride, chiral derivatizing reagent, 6 76t Butylparaben, antimicrobial used in cosmetics, 7 831t terl-Butyl peroxyacetate, 13 484 terl-Butyl peroxybenzoate, 13 486 2-sec-Butylphenol (OSBP), 2 221-222 health and safety data, 2 220t physical properties of, 2 205t o-sec-Butylphenol. See 2-sec-Butylphenol (OSBP)... 

Ammonium dichromate, 4246 Azoformamide, 0816 Azoisobutyronitrile, 3011 Azoisobutyronitrile, 3011 f tert-Butyl peroxybenzoate, 3401 4-Chloronitrobenzene, 2142 f 1,1-Difluoroethylene, 0700 f Diketene, 1441... 

In a study of the course of thermal explosions in low, high and constant pressure autoclave experiments, 3 stages of thermal runaway, initiation and explosion were identified and studied in detail. Most of the work was done with fert-butyl peroxybenzoate, but limited comparative examinations were carried out on 8 other energetic substances. 

Lithium salts of A-terf-aUcylamines 141 (equation 95) undergo direct oxidation with ieri-butyl peroxybenzoate 142 through a free-radical mechanism and afford O-tert-butylhydroxylamines 143 (equation 95 f , although in low yields. 

Styrene monomer and a styrene/butadiene copolymer are fed to the first reaction zone. The polymerization is initiated either thermally or chemically. Many chemical initiators are available such as ferf-butyl peroxybenzoate and ferf-butyl peracetate. Conditions are established to prevent a phase inversion or the formation of discrete rubber particles in the first reaction zone. The conversion in the first reaction zone should be 5-12%. An important function of the first reaction zone is to provide an opportunity for grafting of the styrene monomer to the elastomer (8). 

Butyl Ester of Peroxybenzoic Acid. Same as Butyl Peroxybenzoate... 

The efficiency of a new chiral non-racemic and C2-symmetric 2,2-bipyridyl ligand (6) in copper(I)-catalysed asymmetric allylic oxidation reactions of the cyclic alkenes with f-butyl peroxybenzoate has been evaluated. On performing the reaction of cyclopentene, cyclohexene, and cycloheptene in acetonitrile the corresponding product, (lS)-cycloalk-2-enyl benzoate, was isolated in up to 69% yield and in 91% ee 29... 

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