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WHAT IS ANTIMONY?
Antimony is a pure
element. Some forms of it are metallic,
while others are non-metallic. Antimony
has an atomic number of 51 and is
represented by the symbol Sb. Antimony
is part of the class of elements known
as metalloids, which have properties
roughly between those of the metals
and the non-metals of the periodic
table. Antimony is also what is known
as a semimetal, which refers to the
way in which it conducts energy –
bismuth and arsenic are both semimetals
as well. Other metalloids include
silicon, germanium, and boron.
Antimony in its stable
form is a blue-white metallic element,
with an atomic mass of 121.76g/mol.
It melts at 1167°F (630°C) and makes
a rather effective semiconductor.
Although it looks metallic, antimony
does not have the same chemical responses
as a true metal.
Antimony, like many
of the metalloids, is relatively toxic.
Because of its use in many disposable
products, antimony into water sources
is a concern in many areas. The Environmental
Protection Agency considers it a regulated
element under the Safe Drinking Water
Act, and the maximum contaminant level
is designated as six parts-per-billion.

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Where do we use Antimony?

Antimony is used in many different
contexts in industry, including some
medicines, lead-free solders, bullets,
batteries, plumbing, and matches.
It has been used in a naturally occurring
form for thousands of years, primarily
as a medicine. Antimony in a compound
form also has impressive flame-retarding
properties. Antimony is used for a
wide array of industrial applications,
including many paints, and rubber.
Antimony is also often added to lead
to make the lead stronger
Antimony is used to make alloys with
a number of different metals. An alloy
is made by melting and mixing two
or more metals. The properties of
the mixture are different than those
of the individual metals. One of the
most common of these alloys is one
made with lead. Lead-antimony alloys
are used for solder, ammunition, fishing
tackle, covering for electrical cables,
alloys that melt at low temperatures,
and batteries. The manufacture of
lead storage batteries, like the ones
used in cars and trucks, account for
about one-fifth of all the antimony
used each year. A small amount of
antimony is also used in making transistors,
which are found in such consumer electrical
devices as computer games, pocket
calculators, and portable stereos.
It is used in semiconductor technology
for making infrared detectors and
diodes. Also used in alloys with percentages
ranging from 1 to 20 - greatly increases
the hardness and mechanical strength
of lead, also it is used in batteries,
antifriction alloys, type metal, small
arms and tracer bullets, cable sheathing
and so on.
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