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You can use NaCl to season food for taste, and a little is needed as the body needs to maintain 0,9% salinity, not more nor less.
NaCl in excess is also poisonous so it is used to kill plants and preserve food.
Many kinds of salt have industrial, agricultural and medical uses.
Salts also alter the boiling and freezing points of water.
KCl (nowadays replaced with NaCl) has been used to melt snow and ice on roads.
Sodium glutamate is used to enhance flavours in cooking.
Also bensoates and nitrates are used in food production.
Soil is fertilised with nitrates, phosphates and sulfates.
Plaster is made of calcium sulfate
Acetates are used for polymers.
In certain spritual beliefs salt is used to protect from evil spirits.
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salt
What uses does water have?
salt
Uses of glauber's salt?
Glauber's salt treats constipation
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Kenya uses salt for meat
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Road salt is used for deicing.
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table salt and salt licks for cattle food
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