Sulfur Tetrafluoride, SF4 Specialty Gas

Sulfur Tetrafluoride, SF4 Specialty Gas
Sulfur tetrafluoride is an inorganic compound and the most effective selective
organic fluorinating agent widely used at present. It has an irreplaceable
position in the production of fine chemicals, liquid crystal materials and
high-end pharmaceutical industries.
Product Description
CAS NO  7783-60-0
UN NO  2418
EINECS NO  232-013-4
Molecular weight  108.06
Appearance  Colorless
Melting point  −121.5~−120.5℃
Boiling point  −40.4℃
Density  1.95g/m
DOT Class  2.3+8
Label  Toxic Gas, Corrosives
Sulfur tetrafluoride Gas is a colorless gas with a distinct sulfurous odor. It
is highly toxic by inhalation and is highly irritating to the skin, eyes and
mucous membranes. It reacts violently with water and acids, producing toxic
fluoride and sulfur oxide fumes and acidic solutions. Sulfur tetrafluoride is
heavier than air.
The sulfur in SF4 is in the formal +4 oxidation state. Sulfur has a total of
six valence electrons, two of which form lone pairs. Therefore, the structure
of SF4 can be predicted using the principles of VSEPR theory: it is a seesaw
shape with the S at the center. One of the three equatorial positions is
occupied by non-bonding lone pair electrons. Therefore, this molecule has two
different types of F ligands, two axial and two equatorial.

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