1850 C. G. B. Daubeny (ed. 2) 338 The gaseous trifluoride of boron, which contains no hydrogen.
1880 H. E. Roscoe & C. Schorlemmer II. ii. 319 Antimony Trifluoride, SbF3, is obtained as a dense snow-white mass, by distilling antimony with mercury fluoride.