If it is used as a food additive, yes.
For purified salt, any difference - sodium chloride (NaCl).
Sodium chloride is extracted from salt mines or sea water and after this is purified to become table salt.
purified
purified
Salt that has had any contaminates removed.
It all depends on what you mean. Tap water has more salt than purified water but purified water can hold more salt if salt is added. There is more room, so to speak, for the salt ions to fit into a container.
Common salt, also known as sodium chloride, is primarily obtained from mining underground salt deposits or from evaporating sea water. The salt is extracted, purified, and processed into the familiar white crystals that are used for various purposes, such as seasoning food and preserving ingredients.
Impure common salt can be purified through the process of recrystallization. This involves dissolving the impure salt in water, filtering out any insoluble impurities, and then allowing the solution to cool slowly so that pure salt crystals form. These crystals can then be separated and dried to obtain purified common salt.
Common salt, also known as table salt, is typically prepared from sea water through a process called evaporation. This involves collecting sea water in large shallow ponds and allowing the water to evaporate, leaving behind the salt crystals. The salt is then harvested, washed, and purified to remove impurities before being packaged for distribution.
Because salt doesn't sublime !
There is currently a booming gourmet market in "sea salt" from different oceans of the world. Sea salt has much higher mineral content than purified "supermarket" salt, and different sea salts have different colors and flavors. Some years ago, there was a minor market in Sea Salt as a specific "health food", but the FDA put a stop to that. However, as a gourmet type of salt, it is legal to market it, and currently, it is very lucrative.
yes it can be purified