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We make and sell rotationally molded Sodium Hydroxide (Caustic Soda)
storage tanks. We have Single Wall Tanks and Double Wall Tanks. For lower concentrations of sodium
hydroxide, we produce HDPE (high density polyethylene) tanks. For
high concentration sodium hydroxide, we recommend and produce
Polypropylene tanks. We can produce the Polypropylene tanks
in sizes up to 4,000 gallons. |
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SODIUM HYDROXIDE is also known as
Caustic soda, 1310-73-2, Sodium hydrate, lye and Aetznatron.
SODIUM HYDROXIDE is a highly caustic substance that is used to
neutralize acids and make sodium salts. It is corrosive to metals
and tissue. |
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At room
temperature, sodium hydroxide is a white crystalline odorless solid that
absorbs moisture from the air. It is a manufactured substance. When
dissolved in water or
neutralized with acid it liberates substantial heat, which may be
sufficient to ignite combustible materials. Sodium hydroxide is very
corrosive. It is generally used as a solid or a 50% solution. |
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Sodium Hydroxide in a 50% solution will freeze at about 15 degrees
Celsius (59 degrees Fahrenheit) . It will thicken as it nears that
temperature and become difficult to pump. Sodium Hydroxide tanks
will need to be heated and insulated in order to maintain a good working
temperature. Unless you are installing the Sodium Hydroxide tank
inside a builiding that keeps a high enough constant temperature, we
suggest you consider having us use heat pads and insulate the tank.
The heating pads (called Heat Tracing) are attached to the Sodium
Hydroxide tanks and controlled with a digital control unit. The
insulation for the tank is a closed cell poylurethane foam insulation
that is applied over the heating pads. Refer to the excerpts from
the Dow Chemical
Caustic Soda 50% storage guidelines. |
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Sodium hydroxide is used to
manufacture soaps, rayon,
paper, explosives, dyestuffs, and petroleum products. It is also used in
processing cotton fabric, laundering and bleaching, metal cleaning and
processing, oxide coating, electroplating, and electrolytic extracting.
It is commonly present in commercial drain and oven cleaners. |
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While HDPE tanks are good for lower concentrations of Sodium
Hydroxide, Polypropylene tanks are a better chemical resistance
match.
At higher concentrations, Polypropylene tanks are the best
choice for Sodium Hydroxide storage. Take a look at some
impartial chemical compatibility guides such as
Cole-Parmer and
Grainger to verify this. Polypropylene tanks have
better chemical resistance to Sodium Hydroxide than any type of
Polyethylene. Polypropylene tanks should give you a longer
service life for your Sodium Hydroxide tank. You can find
information on tanks for other applications at
Poly Storage Tank. |
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