Lauroyl peroxide

DOT Label Organic Peroxide UN 2124 (pure compound), and UN 2893, ( 42% solution) 

Benzoyl peroxide is diluted in water and disposed of in a large flowing stream of water. Another common method of disposal is to spread the material over a large area on the downwind side of a pit. The waste solvent is fed to the pit and ignited carefully from a remote position (Armitage and Strauss 1964). The solvent will bnm and decompose the dispersed peroxide. 

Waste containing benzoyl peroxide can be destroyed by mixing it slowly with 10 times its weight of 10% canstic soda solution. The solution is stirred at room temperature vigorously for 3 hours (Woodcock 1983) and flushed down the drain. 

Benzoyl peroxide can be analyzed by HPLC, polarography, and chemical reduction methods. In the latter method, excess sodinm 

Synonyms dodecanoyl peroxide dilanroyl peroxide dilanryl peroxide bis(l-oxodo decyl)peroxide Lanrox, Lanrydol Alpe-rox C 

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Some fabrication processes, such as continuous panel processes, are mn at elevated temperatures to improve productivity. Dual-catalyst systems are commonly used to initiate a controlled rapid gel and then a fast cure to complete the cross-linking reaction. Cumene hydroperoxide initiated at 50°C with benzyl trimethyl ammonium hydroxide and copper naphthenate in combination with tert-huty octoate are preferred for panel products. Other heat-initiated catalysts, such as lauroyl peroxide and tert-huty perbenzoate, are optional systems. Eor higher temperature mol ding processes such as pultmsion or matched metal die mol ding at temperatures of 150°C, dual-catalyst systems are usually employed based on /-butyl perbenzoate and 2,5-dimethyl-2,5-di-2-ethyIhexanoylperoxy-hexane (Table 6). 

In another method, phosgene is gradually passed into 1,2-propylene glycol (9). The chloroformate is washed, dried, and distilled at 266 Pa (2 mm Hg) and added slowly to a mixture of aHyl alcohol and pyridine below 15°C. The purified monomer 1,2-propylene glycol bis(aHyl carbonate) (C H O ) heated with lauroyl peroxide at 70°C gives a hard clear, polymer. 

Figure 2.20. Rates of catalysed and uncatalysed polymerisation of styrene at different temperatures. Catalysts used (all at 0.0133 moleA). A, bis-(2,4-dichlorobenzoyl) peroxide B, lauroyl peroxide C, benzoyl peroxide D, bis-(/)-chlorobenzoyl) peroxide E, none. (After Boundy and Boyer )...

DILAUROYL PEROXIDE, technical pure see LAUROYL PEROXIDE... 

Park and Skene [65] found that the effectiveness of the initiator end groups for causing dehydrochlorination was in the ratio lauroyl peroxide-isopropyl peroxidi-carbonate-benzoyl peroxide-azoisobutyronitrile = 9.7 5.8 4.4 1.6. These values were obtained at 220°C, and the degradation rates were taken as the mean value for 0-20% dehydrochlorination. 

Xanthates serve as a reliable source of electrophilic radicals, and this was exploited by Zard and coworkers for a short synthesis of ( )-matrine (3-304), a naturally occurring alkaloid which has been claimed to have anti-ulcerogenic and anticancer properties [116]. Heating a mixture of xanthate 3-299 and the radical acceptor 3-300 (3 equiv.) in benzene in the presence of lauroyl peroxide as initiator, gave 3-301 in 30% yield and a 3 1 mixture of the tetracylic products 3-302 and 3-303 in 18% yield (Scheme 3.76) [117]. The three compounds could be converted into the... 

All reactions of benzotriazole derivatives of the type Bt-CR RbS discussed above are based on electrophilic or nucleophilic substitutions at the ot-carbon, but radical reactions are also possible. Thus, the first report on unsubstituted carbon-centered (benzotriazol-l-yl)methyl radical 841 involves derivatives of (benzotriazol-l-yl)methyl mercaptan. 3 -(Benzotriazol-l-yl)methyl-0-ethyl xanthate 840 is readily prepared in a reaction of l-(chloromethyl)-benzotriazole with commercially available potassium 0-ethyl xanthate. Upon treatment with radical initiators (lauroyl peroxide), the C-S bond is cleaved to generate radical 841 that can be trapped by alkenes to generate new radicals 842. By taking the xanthate moiety from the starting material, radicals 842 are converted to final products 843 with regeneration of radicals 841 allowing repetition of the process (Scheme 134). Maleinimides are also satisfactorily used as radical traps in these reactions <2001H(54)301>. 

Spiro tricyclic pyrrolizinone 171 was obtained with 65% yield (and almost poor stereoselectivity) by intramolecular radical cyclization of the xanthate 170 upon exposure of the latter to 2equiv of lauroyl peroxide, in a refluxing 3 1 mixture of methanol and 1,2-dichloromethane. The radical generated from the xanthate moiety cyclizes with the... 

Szwarc (99) found a great affinity for methyl radicals in carbon black. Donnet and co-workers [58, 100, 101) determined the concentration of free radicals on carbon black surfaces by the fixation of the radicals of isobutyronitrile, 3,5-dichlorobenzoyl peroxide, and lauroyl peroxide. The number of radicals bound by the surface coincided satisfactorily with the number of unpaired electrons determined by e.s.r. 

In the suspension polymerization process, the autoclave reactor is filled with water. PVA, polyvinyl alcohol is the dispersing agent that helps stabilize the suspension. Lauroyl peroxide is the free radical catalyst that starts it all off. The reaction temperature is around 130°F, and the process takes 10—12 hours per batch, with 95% conversion. 

Benzoyl peroxide has clear IR and Raman stretching frequencies at vO—O 846 and 847 cm , respectively, whereas for lauroyl peroxide the IR band at 886 cm is very weak and only the Raman band at 876 cm can be useful for structural assignments . ... 

THF tetrahydrofuran, NaNap sodium naphthalenide, Na2St disodium stilbene dianion, BP benzoyl peroxide, DME 1,2-dimethoxyethane, TMBD tetramethylbenzidine dication diperchlorate, WBP Wurster s blue perchlorate, LP lauroyl peroxide, FLSPEC fluorescence spectrum obtained, FPSPEC fluorescence and phosphorescence spectrum obtained, FXSPEC fluorescence and eximer spectra obtained, DPAC12 9,10-dichlorO 9,10-dihydro-9,10-diphenylanthracene. 

Compound Name Lauroyl Peroxide 1,1 -Dimethylhydrazine Endrin... 

Divinyl DMDT DMF DMS DMSO DNT DOA 1-Dodecanethiol Dodecanol Dodecanol Dodecanol Peroxide Dodecene 1-Dodecene Dodecene (Non-Linear) Dodecene (Non-Linear) Dodecyl Alcohol Dodecylbenzene Butadiene, Inhibited Methoxychlor Dimethylfbrmamide Dimethyl Sulfide Dimethyl Sulfoxide 2,4-Dinitrotoluene Dioctyl Adipate Lauryl Mercaptan Linear Alcohols (12-15 Carbons) Dodecanol Lauroyl Peroxide Dodecene 1-Dodecene Propylene Tetramer Dodecene Dodecanol Dodecylbenzene... 

Latex, Liquid Synthetic Laughing Gas Lauroyl Peroxide Lauryl Alcohol Lauryl Ammonium Sulfate Lauryl Benzene Lauryl Magnesium Sulfate Lauryl Mercaptan... 

Lithium Aluminum Hydride Latex, Liquid Synthetic Nitrous Oxide Lauroyl Peroxide Dodecanol... 

LAUROYL PEROXIDE Dilauroyl peroxide, Dodecanoyl peroxide Organic Peroxide 0 2 3 oxy... 

Lauroyl Peroxide — Fire Hazards Flash Point (deg. F) Not pertinent (oxidizing combustible... 

Lauroyl peroxide was first produced commercially in about 1941. It is used principally in the production of polymers small amounts are employed in food packaging (lARC, 1985). 

Lauroyl peroxide was tested for carcinogenicity by subcutaneous administration in... 

A single application of lauroyl peroxide to mouse skin induced mild hyperplasia and a temporary increase in dark basal keratinocytes. No major inflammatory or vascular change was noted (lARC, 1985). 

No epidemiological data relevant to the carcinogenicity of lauroyl peroxide were available. 

There is inadequate evidence in experimental animals for the carcinogenicity of lauroyl peroxide. 

Lauroyl peroxide is not classifiable as to its carcinogenicity to humans (Group 3). 

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