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Sulfur
Dioxide
(SO2) Data
Sheet |
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Hazard: |
Flam: |
Flam:
will
not
explode |
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Classification: |
Health: |
Health:
extremely
toxic |
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OX:
|
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oxidizing
agent |
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Synonyms: |
Synonyms:
sulfurous
acid
anhydride,
sulfurous
oxide,
and
sulfur
oxide |
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Exposure
limits: |
(OSHA) |
PEL\TWA:
2
ppm |
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(ACGIH)
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STEL:
5
ppm/
15
min. |
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(OSHA) |
IDLH:
100
ppm
/ 30
min. |
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Industries: |
pulp
and
paper
mills,
and
coal
fired
generating
stations |
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Sulfur
dioxide
is a
colorless
gas
with
a
characteristic,
irritating,
pungent
odor.
Sulfur
dioxide
is
released
when
compounds
containing
sulfur,
such
as
fossil
fuels
like
coal
are
burned.
Sulfur
dioxide
is a
highly
toxic
gas
which
poisons
its
victims
via
inhalation
through
the
lungs.
SO2
combines
with
water
to
form
sulfuric
acid
(H2SO4).
It
is
for
this
reason
sulfur
dioxide
can
burn
the
respiratory
tract
upon
inhalation.
High
doses
of
sulfur
dioxide
can
cause
death
quite
rapidly. |
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Effects
of Various
SO2
Levels |
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Sulfur
Dioxide
Level
in
PPM |
Resulting
Conditions/Effects
on
Humans |
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3-1 |
Sulfur
Dioxide
initially
detected
by
taste |
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2 |
Permissible
Exposure
Level
(OSHA,
ACGIH) |
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3 |
Odor
becomes
easily
detected |
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6-12 |
Irritation
of
the
nose
and
throat |
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20 |
Irritation
of
the
eyes |
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50-100 |
Maximum
exposure
for
a 30
minute
period |
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400-500 |
Dangerous
concentration
can
cause
edema
of
the
lungs
and
glottis
and
death
from
prolonged
exposure |
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Source:
Dangerous
Properties
of
Industrial
Materials
(Sixth
Edition) by
N. Irving
Sax |
hazardous gases