Reference

Fluorination of uranium compounds by gaseous bromine trifluoride and a bromine-fluorine mixture

Fluorination of uranium compounds by gaseous bromine trifluoride and a bromine-fluorine mixture. Sakurai, Tsutomu (Tokai Res. Establ., JAERI, Tokai, Japan). Nippon Genshiryoku Kenkyusho Kenkyu Hokoku, JAERI-1243, 24 pp. (English) 1976. CODEN: NIPEAG. DOCUMENT TYPE: Report CA Section: 71 (Nuclear Technology) Section cross-reference(s): 67, 69, 78, 65 The fluorination of U compds. by using either gaseous BrF3 [7787-71-5] or a Br2-F2 mixt. was investigated to det. its applicability in fuel reprocessing (fluoride-volatility method). Fluorination of U compds. can be carried out at 100 to 200.degree. when using gaseous BrF3 (a temp. range lower than that required for fluorination by the following agents: F2, BrF5, ClF, and SF4). The use of BrF3 requires addnl. devices to heat the corrosive liq. and remove the Br2 generated. In this connection, a new method (the use of Br2-F2 mixt.) was developed. Results show that addns. of small amts. of Br2 to F2 (.apprx.6%) produces marked effects on the rate of fluorination. Specifically, the fluorination of U3O8 [1344-59-8] and UF4 [10049-14-6] was studied. In addn. 7440-59-7 and 7727-37-9 are just another two chemicals used in this study., effects of various carrier gases (He, N, Ar) and their flow rates were studied. .

Use of chlorine trifluride for the complete neutralization of RDX

Use of chlorine trifluride for the complete neutralization of RDX. Heberlein, David C.; Egghart, Heinrich; Snelson, Alan; Tulis, Allen J. (Belvoir Res., Dev., Eng. Cent., Fort Belvoir, VA 22060, USA). Proc. Int. Pyrotech. Semin.There are some reagents with their cas registry numbers 7787-71-5 and 7790-91-2 are used in this study., 16th, 767-84 (English) 1991. CODEN: PPYSD7. ISSN: 0270-1898. DOCUMENT TYPE: Journal CA Section: 50 (Propellants and Explosives) ClF3 and BrF3 under lab. conditions both react with RDX, generally violently in the case of ClF3. The RDX-ClF3 reaction occurs in 2 exothermic stages, the 1st involving the dissoln. of RDX in ClF3, during which the solvate appears turbid and provides evidence of gas-product evolution. This stage is relatively weakly exothermic and soon subsides. The major gases that evolves are FNO2, CHF3, CH2F2, CF4, and (probably) HF. Removal of these gases and excess ClF3 at this time leaves a residue, which appears to be nitramine. If the system is left standing after the first exotherm abates, at which time it becomes a clear liq., a 2nd, much stronger exotherm commences, in which a rapid temp. increase takes place, to ~70°, usually accompanied by a detonation. In the case of RDX-BrF3, the major reaction products are CO2, COF2, CF4, CHF3, and HF, which are formed without the occurrence of violent reaction. Thus, direct chem. initiation of detonation of RDX can be achieved with ClF3. .