The remainder
consists of another fluoride of carbon, incapable of absorption by
potash and chlorine. A mixture of the vapors of carbon tetrachloride
and fluorine inflames spontaneously with detonation, and chlorine is
liberated without deposition of carbon.
_Boric anhydride_ is raised to a most vivid incandescence by fluorine,
the experiment being rendered very beautiful by the abundant white
fumes of the trifluoride which are liberated.
_Silicon dioxide_, one of the most inert of substances at the ordinary
temperature, takes fire in the cold in contact with fluorine, becoming
instantly white-hot, and rapidly disappearing in the form of silicon
tetrafluoride. The _chlorides_ of both _boron_ and _silicon_ are
decomposed by fluorine, with formation of fluorides and liberation of
chlorine, the reaction being accompanied by the production of flame.
ACTION OF FLUORINE UPON METALLIC COMPOUNDS.
_Chlorides_ of the metals are instantly decomposed by fluorine,
generally at the ordinary temperature, and in certain cases, antimony
trichloride for instance, with the appearance of flame.
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