Fluosulfonic Acid

Fluo-sulfosaure, /. fluosulfonic acid, -verbin-dung, /. fluorine compound. 

Vinyl Fluoride, Inhibited Fluosilicic Acid Fluosulfonic Acid Fluosulfonic Acid Calcium Fluoride Fluosilicic Acid Calcium Fluoride Fluosulfonic Acid... 

FLUOSILICATE de SODIUM see DXEOOO FLUOSILICIC ACID see SC0500 FLUOSTIGMINE see IRFOOO FLUOSULFONIC ACID pop see FLZOOO FLUOTITANATE de POTASSIUM (FRENCH) see PUOOO... 

Unlike the rather ill-defined acid sites of siliceous earth, with fluosulfonic acid the intensity of polymerization catalysis (i.e. the number of chain initiations) is clearly dictated by the quantity of fluosulfonic acid added to the THF. The more fluosulfonic acid is added, the more chains are initiated, which means that the more fluosulfonic acid is added, the lower will be the molecular weight of the polymer product. 

Against this background, the process for polymerizing THF with fluosulfonic acid can be outlined as follows ... 

The polymerization of THF with SbCls starts in the same fashion as with fluosulfonic acid except that 250 ml of THF require only 15 ml of SbCls (instead of 30 ml of fluosulfonic acid). The addition of the SbCls causes the THF to assume a yellow to brown color. Some toluene is added to prevent any sudden rise in viscosity. A water bath is employed to take the mixture of THF, SbCls, and toluene to 40 °C for a period of 3 hours. During this time, the viscosity will be seen to increase significantly. 

Fluosulfonic acid provides the positive charge by its hydrogen atom highly depleted of electrons, and it can be removed, though not conveniently, by extraction. Antimony pentachloride provides the positive charge by its self-dissociation into SbCU and SbCU , and can be removed by decomposition. 

Oodecylbenzenesulfonic Acid 27176-87-0 Ethyl Stearate 111-61-5 Fluosulfonic Acid 7789-21-1... 

Arsenic Acid 7789-21-1 Fluosulfonic Acid 79-31-2 Isobutyric Acid... 

FLUOSULFONIC ACID (7789-21-1) Reacts violently with moisture (including moisture in air), generating hydrogen fluoride and sulfuric acid. Solution is a strong acid. Aqueous solution is incompatible with sulfuric acid, alkalis, ammonia, aliphatic amines, alkanolamines, alkylene oxides, amides, epichlorohydrin, organic anhydrides, isocyanates, vinyl acetate. Increases the explosive sensitivity of nitromethane. Attacks metals, especially in the presence of moisture, liberating flammable hydrogen gas. 

These oligomers are prepared by polymerization of THF with protonic acid initiators, and according to the patent literature and other available information, fluosulfonic acid has been used on a technical scale. A recent paper describes the successful application of H2S04/S03 mixtures 11). The diol of Mn = 1000 is a white opalescent solid at 24 C it melts at 32 °C giving a syrupy liquid with a hydroxyl number of 112-116, an acid number less than 0.05, a carbonyl number less than 4.0 and a Ca content le>s than 5 ppm Na and K are less than 10 ppm 8). 

When fluosulfonic acid (FS03H) was used as the initiator of THF polymerization, the higher molecular weight polymer with DP > ([THFJo — [rHF]e/[FS03H]o was formed initially. In the further course of the reaction, the molecular weight decreased and approached calculated values. HF is formed during the polymerization and as determined by 19F-NMR its ultimate concentration equals that of FSOaH 13). The results of a typical polymerization are summarized in Table 6.2. 

As a result of these reactions, fluosulfonic acid and its esters are converted into the sulfonic acid derivatives. The equilibrium constant of the coupling reaction is different for fluosulfonic and sulfuric acid and redistribution of molecular weights occurs in the course of polymerization 13). 

Synonyms Fluorosulfuric acid Fluosulfonic acid Fluosulfuric acid... 

Fluosilicic acid fumes - 688, 779 Fluosulfonic acid - 194, 504 Fluothane - 63 Flux - 505 Fly ash 618 Fly ash slurry -194 Food brine - 505 Food processing - 433, 729 Foods and food products - 618, 737, 743, 884 Accent - 848 Bacon - 14 Bacon fat 227 Bakery products - 382 Barbeque sauce 839, 858 Beans - 613 Beef - 142, 228 Beef, extract 839, 858 Beef, gravy - 227... 

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