Cobalt peroxide

Burdo and Seitz reported in 1975 the mechanism of the formation of a cobalt peroxide complex as the important intermediate leading to luminescence in the cobalt catalysis of the luminol CL reaction [116]. Delumyea and Hartkopf reported metal catalysis of the luminol reaction in chromatographic solvent systems in 1976 [117], while Yurow and Sass [118] reported on the structure-CL correlation for various organic compounds in the luminol-peroxide reaction. 

Howell, O.R. (1923) The catalytic decomposition of sodium hypochlorite by cobalt peroxide. Proceedings of the Royal Society, 104A, 134. 

In a recent mechanistic study it was shown that ferf-butyl hydroperoxide acts most likely as a precursor for the formation of a cobalt peroxide intermediate (entry 3)... 

Cobalt Dioxide, Cobalt Peroxide, Co02, is obtained in the hydrated condition as a greenish black precipitate by treating aqueous solutions of cobaltous salts with iodine and sodium hydroxide.12 It is also obtained by acting on a cobaltous salt with a hypochlorite.13 It decomposes at 100° C., and when washed undergoes partial reduction. 

SYNS C.I. 77323 COBALTIC OXIDE COBALT OXIDE (8CI,9CI) COBALT(3+) OXIDE COBALT PEROXIDE COBALT SESQIOXIDE COBALT SESQUIOXIDE COBALT TRIOXIDE DICOBALT OXIDE DICOBALT TRIOXIDE... 

More common oxidation reagents are oxygen in the presence of cobalt peroxide [1136], manganese dioxide [Si3], barium manganate [S53], silver permanganate [897], and nickel peroxide [936] (equation 495). 

More intensive dehydrogenation of primary amines having two hydrogen atoms on the adjacent carbons leads to nitriles. Such dehydrogenations are accomplished by argentic oxide cobalt peroxide [1136], nickel peroxide [936], lead tetraacetate [443, 444], sodium hypochlorite [692], potassium ferricyanide [924], and potassium ruthenate [196] (equation 513). 

Cobalt peroxide 42S0 C02O3 Cobaltlc oxide cobalt sesquloxide. 

C.l. 77323 Cobalt black Cobalt oxide Cobalt oxide (C02O3) Cobalt peroxide Cobalt sesqioxide Cobalt sesquioxide Cobalt trioxide Cobalt(3+) oxide Cobalt(lll) oxide Cobaitic oxide Dicobalt oxide Dicobalt trioxide EINECS 215-156-7. A pigment used in coloring enamels and glazing pottery. Black solid insoluble In H2O. soluble in H2SO4. Atomergic Chemetals Cerac Noah Chem. 

The effect of ionic environment on the rate of diffusion controlled e"aq reactions is revealed when one compares the experimental rate constants with the calculated values. In Table I the highly charged bis-pentacyano cobaltic peroxide (I) is much more reactive than expected for a pentavalent anion (1.11). It has been claimed (19) that polyvalent anions exhibit a lower effective charge in their kinetic behavior than expected from their structural formulae. We have checked the salt effect on the reaction of I + e m and compared it with the NOjf e m reaction. The results presented in Table IV and Figure 1 show that nitrate ions possess a normal salt effect, a result previously obtained by competition kinetics (15, 17). On the other hand, the salt effect of the I + e"aq reaction shows that this bis-pentacyano cobaltic peroxide ion has an... 

The choice of initiator will depend on the fabrication requirements. For low-temperature curing, cobalt-peroxide combinations often are used. The benzoyl peroxide-tertiary amine system is used at low temperatures when oxygen inhibition is a problem. Higher-temperature processes generally rely on the uncatalyzed thermal initiation of initiators such as cumene hydroperoxide or dilauryl peroxide. 

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