Bromine fluorides

The time-weighted, 8-h average limit for exposure to bromine pentafluoride is 0.1 ppm (67). Materials of constmction suitable for use with the bromine fluorides include nickel. Monel metal, or Teflon. For shipping, bromine trifluoride and pentafluoride are classified as oxidizers under DOT regulations. The trifluoride also requires a poison label. [Pg.293]

Additions of halogen fluorides to the more electrophilic perfluonnated olefins generally require different conditions Reactions of iodine fluoride, generated in situ from iodine and iodine pentafluoride [62 102 103, /05] or iodine, hydrogen fluoride, and parapeiiodic aud [104], with fluormated olefins (equations 8-10) are especially well studied because the perfluoroalkyl iodide products are useful precursors of surfactants and other fluorochemicals Somewhat higher temperatures are required compared with reactions with hydrocarbon olefins Additions of bromine fluoride, from bromine and bromine trifluonde, to perfluonnated olefins are also known [lOti]... [Pg.65]

Reactions of the halogen iluorides with other unsaturated functional groups are generally reported only with highly fluorinated substrates Hexafluorobenzene and denvatives [118] and octaflvoronaphthalene [119] react with mixtures of bromine and bromine trifluoride by 1,4 addition of fluorine followed by addition of bromine fluoride across a reniatning double bond (equation 22)... [Pg.68]

Alkyl diethylphosphononuoroacetates have been used extensively in ol fi-nanon procedures [69], principally forming the ffJ-a-fluoro-a.P-unsaturated esters with very high stereoselectivity [70] (equation 61) (Table 22). Preparation of the ethyl diethylphosphonofluoroacetate from ethyl fluoroacetate has obviated the necessity to prepare ethyl bromofluoroacetate from bromine fluoride and ethyl diazoacetate [71],... [Pg.593]

By using freshly preeipitated copper powder at 200 °C, perfluroallenes can be prepared by the elimination of bromine fluoride or iodine fluoride from the corresponding starting matenals [70] The reaction is carried out at low pressure, 1-2 mm of Hg, and the products quickly dimenze into cyclobutane derivatives (equation 39)... [Pg.901]

Brom-benzol, n. bromobenzene. calcium, n. calcium bromide, -cyan, n. cyanogen bromide, bromocyanogen. -dampf, tn. bromine vapor, -eisen, n. iron bromide, -fiasche, /. bromine bottle, -fluor, n. bromine fluoride, -gehalt, tn. bromine content, -gold, n. gold bromide, -goldkalium, n. potassium auri-bromide, potassium bromoaurate. bromhaltig, a. contaim ng bromine, Brom-hydrat, n. hydrobromide bromine hydrate. -hydrin, n. bromohydrin. [Pg.83]

Fluor-, of or combined with fluorine, fluoro-, fluo-, fluoride of (see instances following),. ammonium, n. ammonium fluoride, -an-thenchinon, n. fluoranthenequinone. -anti-mon, n. antimony fluoride, -arson, n. arsenic fluoride, -baryum, n. barium fluoride, -benzol, n. fluorobensene, fluobenaene. -bor, n. boron fluoride. -borsMure, /. fluo-boric acid. -brom, n. bromine fluoride, -chrom, n. chromium fluoride, -eisen, n. iron fluoride. [Pg.160]

Chemically it behaves like the other bromine fluorides, but is more reactive. Hydrogen... [Pg.102]

See Bromine Hydrogen 0.45/99 Bromine fluoride Hydrogen Bromine trifluoride Halogens, etc. [Pg.1613]

The actual composition present in the Br2/BrF3 mixture is not known, and any fluorination reaction may be a composite reaction of BrF, BrF3 and BrF5. It is not necessary to assume that BrFa is the reactive constituent, although this is probable. Consider the fluorination of a species X—a metal, oxide, oxysalt, halide, etc.—to the fluoride XF by a mixture of bromine fluorides BrFgj. The general reaction is... [Pg.22]

If we assume qXt =qY, for all values of i (i.e., there is no selectivity of attack by the different bromine fluorides) and that the enthalpies of bromine and its fluorides are not significantly different in the product solutions, then the bromine fluoride values are eliminated by subtraction of the enthalpy changes... [Pg.22]

Bromine fluoride, 0238 Bromine pentafluoride, 0243 Bromine trifluoride, 0241 Chlorine fluoride, 3971 Chlorine pentafluoride, 3989 Chlorine trifluoride, 3981... [Pg.206]

Bromine Fluorides. The following compds are described in the literature Bromine monofluori.de, BrF, mw 98.92, red-bra unstable gas, fr p -33°, bp 20° is formed from the ttifluoride bromine (Ref 2). Bromine trifluoride, BrFg, mw 136.92, col to gray-yel liq, ft p 8.8°, bp 135°, d 2,49 at 135° is formed from fluorine and bromine or HBr (Ref 2). Bromine pentafluori.de, BrFg, mw 174.92, col liq, fr p -61.3°, bp 40.5°, d 2.47 at 25°, vap d 6.05 is formed from the elements at 0°(Ref 2). Sax(Ref 3) considers these compds to be dangerous when heated to decompn or on contact with an acid or acid fumes, since they emit highly toxic fumes of bromine fluorine they react with w or steam to produce heat, toxic and corrosive fumes... [Pg.305]

Bromine fluoride Hydrogen Bromine trifluoride Halogens, etc. [Pg.1680]

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See also in sourсe #XX -- [ Pg.48 ]

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See also in sourсe #XX -- [ Pg.48 ]

See also in sourсe #XX -- [ Pg.48 ]

See also in sourсe #XX -- [ Pg.3 , Pg.184 ]

See also in sourсe #XX -- [ Pg.3 , Pg.184 ]

See also in sourсe #XX -- [ Pg.34 ]

See also in sourсe #XX -- [ Pg.3 , Pg.184 ]

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