Sulphur
hexafluoride
(SF6) is a colourless
and odourless
gas.
Pure SF6 is non-
poisonous,
therefore.
no risk
classification
has to be followed.
As reference
for the degree
of toxicity
,t.he German MAK-values (maximum ambient
concentration
value
for
an ei9ht-hour
stay)
are
given:
The mclximum concentration
at
a place
of work,
assuming
that
a person
spends
8 hour's per day there,
is
1000 ppm (or 0.1
%)
by volume.
Thi s very
low value
is
the
standard
value
adopte1d
for
all
gases
cons i dered
haJ'ffi'less,
but
not
normally
present
in the
atmosphere.
Under the
influence
of an are,
decomposition
products
occur
which are
partly
toxic,
The decomposition
products
of SF6 are of different
toxicity.
They may irritate
mucou~
membrane~,
respiratory-
tracts
and
other
unprotected
skin.
Almost
immediately
- prior
to the dan~I'~r of poisoning
arising
- even smallest
amounts
of gaseous
decomposition
products
can be recognised
by their
strongly
pungent,
disagreeable
odour.
Summary of Contents for SF6
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