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ID: 58
Posted on: 2012-08-23 06:15:34
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Title: The important of common salt

Type: Argumentative Essay
Theme: The important of common salt
Author: The author is hidden!
School: Saunders Secondary School
Class: -
City: London, Ontario
E-mail: The email is hidden!

Text
In its mineral form sodium chloride, NaCl, is known as common salt. It is important because it is essential to the health of human beings and of animals. For domestic use it is fined down to what is known as table-salt, and small quantities of other chemicals are added to it to keep it free-flowing when in contact with the atmosphere.

Salt and potassium are combined to produce iodised salt, used when iodine is lacking in diet. It s absence causes goitre, the swelling of the thyroid gland.

Livestock as well as humans need salt, and this provided in the form of solid blocks, known as 'salt-licks'.

Salt is also crucial to the food industry. It is used in meatpacking sausage-making and fish-curing both for seasoning and as a preservative. It is also used in the curing and preserving of hides and in the form of brine of brine for refrigeration purposes.

Salt is extensively used in the chemical industry; in the manufacture of baking soda, sodium bicarbonate; of caustic soda, sodium hydroxide; of hydrochloric acid, of chlorine etc. It is also used in soap-making, and in the manufacture of glaze and porcelain enamel. It also enters metallurgic processes as flux, a compound used to assist the fusing of metals.

Salt lowers the melting point of water, so in combination with grit, it is used for clearing roads of snow and ice. It is also used for water-softening by means of removing calcium and magnesium compounds from tap water.

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