Chlorine-phosphorus

Direct chlorination of 3,6-dichloropyridazine with phosphorus pentachloride affords 3,4,5,6-tetrachloropyridazine. The halogen is usually introduced next to the activating oxo group. Thus, 1,3-disubstituted pyridazin-6(l//)-ones give the corresponding 5-chloro derivatives, frequently accompanied by 4,5-dichloro compounds as by-products on treatment with chlorine, phosphorus pentachloride or phosphoryl chloride-phosphorus pentachloride. 

It also detonates in the presence of phosphorus, sulphur and carbon monoxide. With a chlorine/phosphorus pentachloride mixture the resulting detonation was explained by the hypothetical formation of chlorine monoxide. 

It bums in air, and is readily attacked by chlorine, phosphorus or sulfur. See other nitrides... 

ALKYLHALOPHOSPHINES, ALKYLPHOSPHINES tert-BUTYL PEROXOPHOSPHATE ESTERS iV-CHLORINATED PHOSPHORUS AMIDES HALOPHOSPHINES, METAL PHOSPHINATES METAL PHOSPHORUS TRISULFIDES NON-METAL OXIDES, NON-METAL SULFIDES PHOSPHINES, PHOSPHORUS ESTERS... 

Chemical/Physical. Oxidizes to the corresponding sulfoxide, sulfone, thiol, thiosulfone, and thiosulfoxide (Hartley and Kidd, 1987). Emits toxic fumes of chlorine, phosphorus, and sulfur oxides when heated to decomposition (Sax and Lewis, 1987). 

Other substances decrease or annihilate, even in traces, the catalytic properties of iron. Such catalyst poisons had already been known as a nuisance in the catalytic oxidation of sulfur dioxide. With the ammonia catalysis several elements, particularly sulfur proved to be harmful, even in amounts of 4oo of one per cent. Chlorine, phosphorus and arsenic showed a similar behavior (30), just as certain metals, such as lead, tin and zinc. 

This circular reviews the occurrence of 34 trace elements in coal and the occurrence and distribution of chlorine, phosphorus, titanium, and manganese, which are not considered rare in coal. Separate chapters are devoted to germanium, gallium, and uranium in coal. 

Figure 4. Graph of Pt-P length (shown with standard deviation limits) against 2]pt-p for platinum(II) complexes of trialkylphosphines , phosphorus trans to phosphorus , phosphorus trans to chlorine , phosphorus trans to other donor atoms O, trans-[Ptl2(PCy3)2], For discussion see Ref. 23 the point with JPt-P > 5000 Hz is for [Pt2(p-Cl)2(COEt)2(PMe2Ph)2] (24). Some platinum(IV) complexes have been...

See Chlorine Phosphorus compounds See other METAL NON-METAT,TIDES... 

Chemical plant safety, 68 Chemical stability/reactivity assessment, 68 Chemical vapour deposition (cvd), 69 Chlorinated paraffins, 69 N-chlorinated phosphorus amides, 69 Chlorinated poly(dimethylsiloxanes), 69 Chlorinated rubber, 69 Chlorine-containing systems, 70 Chlorite salts, 70 Chlorofluorocarbons, 71 N-Chloronitroamines, 71 Chlorophyll, 71... 

Haumann, T. and Thumulla,). (2002) Semi volatile organochemicals in indoor environment-chlorinated phosphorus and organotin compounds in material und house dust samples. Proceeding of Indoor Air 2002(4), pp. 865-70. 

Analysis of particles originating from the use of matches revealed that only a very small number of spherical particles were present the majority of particles was very irregular. The elements detected were aluminum, calcium, chlorine, chromium, iron, potassium, magnesium, manganese, phosphorus, sulfur, antimony, silicon, and zinc, with potassium, chlorine, phosphorus, sulfur, and silicon the major components. Antimony was detected in only 2 of the 17 types of matches examined. None of the samples examined would be confused with FDR particles as both their morphology and elemental content differed. 

Transformations of phosphines to difluorophosphoranes proceed with xenon difluoride under mild conditions and in high yields, and the phosphorus-hydrogen bond is stable chlorine atoms are replaced by fluorine in chlorine-phosphorus molecules, while triphenyl and trimethyldifluorophosphorane are isolated in 90-100% yield130-132. Reactions of compounds containing P—N, P—O and P—S bonds with xenon difluoride proceed by fragmentation or dimerization133 (Scheme 55). 

Chlorinated phosphorus ester ANTIBLAZE Albright Wilson... 

Various other chemical and technical subjects, not directly discussing the products of their publishing company, are reviewed in house organs. Lvbricationy a publication devoted to discussions of the selection and use of lubricants, in the May-June issues of 1950 presented a general review of the concepts and measurements of viscosity. Inco Corrosion Reporter in each issue discusses the chemistry and manufacture of some corrosive material, such as fluorine, chlorine, phosphorus, or hydrofluoric acid. Interchemical Review has published reviews of spot test analysis, the organic chemistry of dyes, and other chemical subjects. 

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