Lead monoxide peroxide

Some polysiloxanes are curable with lead monoxide, with a consequent reduction in both curing time and temperature. High-frequency electrical energy vulcanizes in one case at least. Zirconium naphthenate imparts improved resistance to high temperatures. Barium salts are said to prevent blooming. Sulfur dichloride is also used. Some resins are solidified by pressure vulcanization, using di-f-butyl peroxide. Improvements are to be found in lower condensation temperatures and shorter times of treatment... 

Metal Oxides. Red phosphorus reacts vigorously on heating with copper oxide or manganese dioxide. It may ignite on grinding or warming with lead monoxide or mercury or silver oxides. It ignites in contact with lead, sodium, or potassium peroxides. White phosphorus explodes in contact with the latter peroxides.18... 

The RgPb2 compounds generally tend to be very reactive with air. The oxidation of hexaethyldilead is proposed to involve an initial formation of a peroxide (C2Hs)3PbOOPb(C2H5)3, which in turn reacts with more hexaethyldilead to form bis (triethyllead) oxide, which in turn decomposes into tetraethyllead and lead monoxide, as well as ethane and ethylene 3>4>. 

Particles of lead dioxide in lead monoxide, such as those formed in a ball-mill, can be formed by treating the oxide with ozone before paste mixing [49]. The use of persulfate [50-53] and peroxides [54] to effect the partial conversion of lead oxide in the paste to lead dioxide has also been proposed. A proprietary process for treating the surfaces of unformed plates with ozone gas produced a thin coating of lead dioxide, which enhanced formation [55,56]. Much lower quantities of lead dioxide are needed with this approach than when red lead is added to the plate, and the normal battery paste mix can be used. Dipping or spraying the plate with a persulfate solution has also been adopted to oxidize the surface PbO to conductive Pb02 [57]. 

ESTANO (Spanish) (7440-31-5) Finely divided material is combustible and forms explosive mixture with air. Contact with moisture in air forms tin dioxide. Violent reaction with strong acids, strong oxidizers, ammonium perchlorate, ammonium nitrate, bis-o-azido benzoyl peroxide, bromates, bromine, bromine pentafluoride, bromine trifluoride, bromine azide, cadmium, carbon tetrachloride, chlorine, chlorine monofluoride, chlorine nitrate, chlorine pentafluoride, chlorites, copper(II) nitrate, fluorine, hydriodic acid, dimethylarsinic acid, ni-trosyl fluoride, oxygen difluoride, perchlorates, perchloroethylene, potassium dioxide, phosphorus pentoxide, sulfur, sulfur dichloride. Reacts with alkalis, forming flammable hydrogen gas. Incompatible with arsenic compounds, azochloramide, benzene diazonium-4-sulfonate, benzyl chloride, chloric acid, cobalt chloride, copper oxide, 3,3 -dichloro-4,4 -diamin-odiphenylmethane, hexafluorobenzene, hydrazinium nitrate, glicidol, iodine heptafluoride, iodine monochloride, iodine pentafluoride, lead monoxide, mercuric oxide, nitryl fluoride, peroxyformic acid, phosphorus, phosphorus trichloride, tellurium, turpentine, sodium acetylide, sodium peroxide, titanium dioxide. Contact with acetaldehyde may cause polymerization. May form explosive compounds with hexachloroethane, pentachloroethane, picric acid, potassium iodate, potassium peroxide, 2,4,6-trinitrobenzene-1,3,5-triol. 

LEAD MONOXIDE (1317-36-8) A strong oxidizer. Explosive reaction with 90% peroxy-formic acid, rubidium acetylide. Reacts violently with strong oxidizers, boron, chlorine, fluorine, dichloromethylsilane, calcium sulfide, hydrogen peroxide, hydrogen trisulfide (ignition), hydroxylamine (ignition), lithium carbide, metal acetylides, metal powders (e.g., aluminum, molybdenum, zirconium, etc.), perchloric acid, red phosphorus, selenium oxychloride, sodium. Incompatible with aluminum carbide, barium sulfide, silicon, sulfuryl chloride. Forms impact-sensitive explosive mixtures with dichloromethylsilane. May attack plastics, coatings, and chlorinated rubber materials such as Hypalon , Parlon , Rutile , and fluorinated rubbers such as Viton . 

After peroxide injection, conversion of methane increases fix)m -4% to -10%, methanol production increases 17 fold, and carbon dioxide increases 5 fold, along with modest increases in hydrogen and carbon monoxide. Introduction of hydroxyl radicals to the reactor leads to a greater fi action of product going to methanol as evidenced by methane conversion increasing 2.5 times, whereas methanol production increases 17 times. The increase in carbon dioxide is fiom "deep" oxidation of... 

In addition to cytochrome P-450 induction, other diet induced metabolic effects are likely to be involved in carcinogenesis. High temperature processing or long-term storage of foods with attendant exposure to oxygen can lead to the formation of lipid peroxides and oxidized sulfur amino acids in the food. The partially oxidized S-amino acids cystine monoxide (CMO) and methionine sulfoxide (MSO) are nutritionally available, but require in vivo conversion to the reduced amino acids at the... 

While these experiments, which were carried out without giving a theoretical insight into the nature of the electrochemical reaction, yielded almost all the possible oxidation products in the oxidation of methyl alcohol, Elbs and Brunner 2 have discovered a method which gives 80% of the current yield in formaldehyde. This is exactly the substance which could not be proven present up to that time among the electrolytic oxidation products of methyl alcohol. Elbs and Brunner electrolyzed an aqueous solution of 160 g. methyl alcohol and 49 to 98 g. sulphuric acid in a litre. They employed a bright platinum anode in an earthenware cylinder, using a current density of 3.75 amp.1 and a temperature of 30°. Only traces of formic acid and carbonic acid and a little carbon monoxide, aside from the 80 per cent, of formaldehyde, were formed. Plating the platinum anode with platinum decreased the yield of formaldehyde at the expense of the carbon dioxide. With an anode of lead peroxide the carbon dioxide exceeded the aldehyde. 

Oxidation of 1,2,4-benzotriazines with peracid leads to a mixture of the 1-oxides, the 2-oxides and the 1,4-dioxides, depending on the reaction conditions used.109 243 Thus, oxidation of 3-methyl-l,2,4-benzotriazine with hydrogen peroxide in acetic add for four days at room temperature yields five products 3-methyl-l,2,4-benzotriazine 1-oxide (12), the 2-oxide 13, 3-methyl-l,2,4-benzotriazine 1,4-dioxide (14), benzotriazole, and 2-methylbenzimidazole.109 Treatment of the same compound with 3-chloroperoxybenzoic acid in benzene at room temperature for four days yields the same two monoxides 12 and 13 and the same dioxide 14. 

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