There are 1,214 industry grade magnesium carbonate suppliers, mainly located in asia. the top supplying countries or regions are china, united states, and india, which supply 93%, 1%, and 1% of industry grade magnesium carbonate respectively. M1056 39409-82-0. magnesium carbonate, light, fcc is used as a nutritional supplement. the fcc grade meets the requirements of the food chemical codex indicates and is suitable for all food, beverage and nutritional supplement applications. spectrum chemi Dec 03, 2018 · alibaba offers 1,210 magnesium carbonate price products. about 49% of these are gymnastics, 31% are carbonate, and 1% are chloride. a wide variety of magnesium carbonate price options are available to you, such as food grade, industrial grade, and agriculture grade. About 87% of these are carbonate, 1% are other chemicals, and 1% are electronics chemicals. a wide variety of industrial grade magnesium carbonate options are available to you, such as industrial grade, agriculture grade, and food grade. there are 1,169 industrial grade magnesium carbonate suppliers, mainly located in asia.