Coarse salt is generally unavailable. Of course, if you're in the countryside, it may still be available. It's just that supermarkets are probably full of table salt.
"Coarse salt" refers to unrefined sea salt, lake salt or well salt, mainly sold by unscrupulous traders in private, some people think that the bulk of the large crystallized "coarse salt", salt, cheap, like to buy directly to eat or used to pickle, etc. Therefore, poisoning often occurs, especially in the case of the "coarse salt". As a result, poisoning often occurs, especially in rural areas, some called "paralysis".
"Crude salt" in the main toxic ingredients for barium chloride, after eating into the body, mainly distributed in the muscle, it is a muscle poison, can make the poisoned people appear face, limbs, pinprick-like numbness, muscle tremor, spasms, convulsions; severe muscle paralysis, pupil dilation and can not be adjusted, paralysis of the tongue muscle pronouncement difficulties; respiratory muscle paralysis and respiratory difficulties; the respiratory muscle paralysis. In severe cases, the muscles are gradually paralyzed, the pupils are dilated and cannot be adjusted, the tongue muscle is paralyzed, and the pronunciation is difficult.
The original salt is the so-called coarse salt, before people eat salt for coarse salt, but with the improvement of health and living standards, the original salt is now used as a raw material for the two alkali industry, generally no longer as food.
To distinguish between industrial salt and table salt, consumers can first observe the size and color of the salt particles. Generally speaking, industrial salt particles are larger and contain more impurities, so it will appear coarse and black, while iodized table salt is mostly small particles, the color is relatively white. Secondly, the bagged private salt packaging is relatively rough, often neither the place of production, there is no production standards, not to mention the company which supervises the production and sale of the word. While the regular salt is noted "Salt Administration Supervision".