Organic fluorides

Calcium sulfate is formed as a byproduct in industrial processes such as flue gas desulfurization and the production of zinc, fluoride, organic acids and phosphoric acid, in amounts of many million tons per year. In this study the attention is focussed on calcium sulfate from the production of phosphoric acid for fertilizer applications. It is precipitated, from solution after digestion of phosphate ore by addition of sulfuric acid according to [1] ... 

Hydrofluoric acid is very important and the basic ingredient for the preparation of highly specialized organic and inorganic fluorides. Organic fluorides, fluorinated herbicides, pharmaceutical intermediates, elastomers and inert liquids are prepared with anhydrous HF. Total HF consumption by organic fluorine compounds is 1-1.5% of world production. 

Not only is thermal fluorodediazoniation possible, but the corresponding pliotochemically induced process is also possible (see Vol. E 10a, p 703). Several aromatic fluorides can be prepared viti diazotization and pliotochemically induced fluorodediazoniation of aromatic amines in anhydrous hydrogen fluoride-organic base solutions. In general, no fluoroaromatic compounds can be isolated if the fluorodediazoniation stage is carried out without photochemical irradiation under similar conditions (rt). 

Fluoroarenes from Anilines via Diazotization and Photochemieally Induced F luorodediazoniation in Hydrogen Fluoride-Organic Base Complex General Procedure ... 

Fluoroarenes from Anilines via a One-Pot, Thermal Reaction Using Hydrogen Fluoride-Organic Base Complex at the Dediazoniation Step General Procedure 40... 

COBALT (7440-48-4) An extreme fire hazard. Pyrophoric particles or dust can self-ignite in air. Violent reaction with acetylene, ammonium nitrate, bromine pentafluoride, bromine trifluoride, cumene hydroperoxide, hydrogen peroxide (90%), nitryl fluoride, organic peroxides forms explosive mixture with potassium chlorate. Incompatible with sodium borohydride. Capable of promoting the decomposition of many organic materials. 

Fluorine is the most chemically reactive of all the elements and combines directly at ordinary or elevated temperatures with all the elements other than oxygen and the lighter noble gases, often with extreme vigor. It also attacks many other compounds, particularly organic compounds, breaking them down to fluorides organic materials often inflame and bum in the gas. 

Ramasundaram, S., Yoon, S., Kim, K J., Park. C., (2008). Preferential Formation of Electroactive Crystalline Phases in Poly(vinylidene fluoride)/Organically Modified Silicate Nanocomposites, Polymer science Part B Polymer Physics, Vol. 46, 2173-2187, ISSN 1099-0518. 

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