Properties of Organic Peroxides

The properties of organic peroxides which are decisive for their classification should be determined experimentally. Test methods with pertinent evaluation criteria are given in the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Part II (Test Series A to H). 

The properties of organic peroxides used of the crosslinking of elastomers are discussed from a safety point of view, with particular emphasis on its stability and decomposition effects. Differences between pure peroxides and peroxide formulations are shown. Classification of organic peroxides and their hazard types is briefly discussed, and general requirements for storage... 

J.W. Cywinski, The Role of Organic Peroxides in Curing Polyester Resins and Their Influence on The Physical Properties of Re-... 

The hydroxylating properties of hydrogen peroxide in the presence of iron(II) salts have been known since 1894.485 This system, known as Fenton s reagent, has been widely used as an effective oxidant of a great variety of organic substrates.486-488 525"526 A widely accepted mechanism, proposed by Haber and Weiss, involves the formation of hydroxyl radicals from the cleavage of the peroxide bond by iron(Il) ions (equation 216).527... 

Toledo RT, Escher FE, Ayres JC (1998) Sporocidal properties of hydrogen peroxide against food spoilage organisms. Appl Microbiol 26 592-597... 

A remarkable property of hydrogen peroxide, which may be mentioned here, although m the result the effect is not an oxidising one, is the power of causing organic cyanides to unite with the elements of... 

Table 12.2 gives a qualitative survey of photolysis products that are important reactants in surface and atmospheric waters. Some of the important physicochemical properties of these photoreactants have already been discussed in Chapter 11. As the table illustrates, the formation of singlet oxygen, of OH radicals, of O /HO, and of organic peroxides is especially important. Some reaction schemes are given in Figure 12.3. 

A guide to the analysis, as well as to the ordinary physical properties of pure oxygenated compounds is provided for in a work by Huntress and Mulliken (52). The physical constants (njy, b.p., and m.p.) with references to the original literature for a selected number of organic peroxides are given by Mesrobian (72). 

Effect of Organic Peroxides. The effect on the oxygen-carrying properties of Limulus hemocyanin by different organic peroxides was tested. The peroxides tested included succinic acid peroxide (HOOC— CH2—CH2—C0)202 tert-butyl hydroperoxide ((CH3)aC—OOH) and... 

All organic peroxides, with the possible exception of the peroxyacids, appear to undergo O—O homolysis at temperatures below about 150° and should therefore be capable of initiating the polymerization of vinylic monomers. In practice, however, only a very few peroxides are regularly used as catalysts. This paper describes the results of an investigation of the mechanism of the preparation of organic peroxides and the extension of the reactions to the preparation of new types of peroxides which may have novel properties as polymerization catalysts. 

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