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- Sodium chlorate is a
powerful oxidizing agent. It is used to manufacture explosives and
matches because of its ability to produce oxygen. Sodium Chlorate is
- Sodium chlorate is a
powerful ingredient of bleaching powder used in paper and pulp
processing and calico printing. It is used also a weed killer and
Sodium Chlorate is
manufactured by the electrolytic oxidation of Sodium Chloride using
Titanium substrate anodes. Sodium Chloride is thrown out from the
solution by evaporation and Sodium chlorates crystallizes on cooling.
When pure, it is a white
crystalline powder that is readily soluble in water. It is hygroscopic.
It decomposes above 250 °C to release oxygen and leave sodium chloride.
It is synthesised from the electrolysis of hot sodium chloride
solution in a mixed electrode tank. It can also be synthesised by
passing chlorine gas to a hot sodium hydroxide solution. It is then
purified by crystallization.
- The active ingredient
sodium chlorate is found in a variety of commercial herbicides. Some
trade names for products containing sodium chlorate include Atlacide,
Defol, Drop-Leaf, Fall, Harvest-Aid, Kusatol, Leafex, and
Tumbleaf.Sodium chlorate is used in Some aircraft as a source of
supplimental oxygen. Iron powder is mixed with Sodium chlorate and
ignited by a charge activated by pulling on the emergency mask. The
reaction produces more oxygen than is required for combustion.
- Sodium chlorate is
mostly used to produce chlorine dioxide for bleaching paper pulp, but is
also used as a herbicide and to prepare other chlorates.
- Sodium chlorate is used
as a non-selective herbicide. It is considered phytotoxic to all green
- Sodium chlorate may be
used to control morning glory, Canada thistle, johnson grass, bamboo,
ragwort. Sodium chlorate is also used as a defoliant and desiccant for
cotton, safflower, corn, flax, peppers, soybeans, grain sorghum, southern
peas, dry beans, rice and sunflowers.
- In 1994, Canadian
production of sodium chlorate was up by about 15% over the previous
year, and is expected to experience similar growth in 1995 as a result
of the improved performance forecast for the pulp and paper industry.In
North America, by 1995, caustic soda is forecast to represent 49.0% of
bleaching chemical usage; chlorine will be reduced to 22.5% and sodium
chlorate will account for 20.9%.
- In North America, the
consumption of sodium chlorate is forecast to continue to grow at a rate
of 11-13%/y. In Canada, the sodium chlorate industry experienced strong
growth of about 13% in 1994 and is expected to enjoy similar growth in
1995. Long term, however, pulp production in the U.S. will decline, and
with it sodium chlorate, as production moves to offshore areas such as
South East Asia and Latin America . For the forecast period, demand
growth for sodium chlorate is expected to be 3 percent per year.
- It is anticipated
that approximately 40,000 tonnes of sodium chlorate per year will be
produced. Most of the
Sodium Chlorate produced in the world is used for paper pulp bleaching.
The next important use is in the manufacture of perchlorates.
- Quite often waste
hydrogen from sodium chlorate facilities is used as feedstock for across
the fence hydrogen peroxide facilities. They remain interested in the
potential for producing hydrogen peroxide and will continue to monitor
potential uses for hydrogen.
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