Chemically they are both sodium chloride although some curing salts are a mixture of sodium nitrate and sodium chloride.
Food is preserved by curing with salt, smoking, pickling, drying, or canning.
Pickling lime used to be an accepted method of adding crispness to pickled cucumbers. The USDA no longer recommends use of pickling lime. Pickling lime is alkaline and must all be washed off of the cucumbers or it can result in a less acidic pickling solution. It the pickling solution is not acidic enough it can allow botulism an environment in which to grow. Botulism cases have been linked to this situation and this is the reason it is no longer recommended.
High sugar, salt or acid content creates a hostile environment for fungi and bacteria. Candying, salt curing and pickling are methods commonly used to preserve food.
Sodium chloride is used.
It is only a legend; you can use iodized salt.
Any difference, both are sodium chloride.
Pickling salt is the same as table salt but without iodine and caking agents added. Salt that is labeled "kosher salt" may be free of these additives and can be used in place of pickling salt but you'd have to check the package labeling to confirm the lack of additives.
Curing. As in "curing meat".
This is a grammatically incorrect sentence and cannot be answered as written. Please reword and resubmit.
Yes - you can use pickling salt to brine turkey. The main difference between pickling salt and other salts are grain size and iodine. Table salt has iodine, pickling salt does not. The iodine is only added to table salt to add that nutrient to our diet; it has no effect on brining turkey - it doesn't hurt but it doesn't help. Pickling salt is also very fine-grained, to speed up dissolving in water to create a brine, so it is useful for solutions needing salt. Typically it is even finer grained than table salt and much finer than rock salt or kosher salt. When you think about it, canning salt really is designed for brining processes so not only CAN you use it to brine turkey - it would probably be the PREFERRED type of salt to use to brine turkey.
vinegar (when pickling), salt . . .
KNO3 is potassium nitrate