Magnesium trisilicate is an

inorganic compound An inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds⁠that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as ''inorganic chemistry''. Inorgan ...

that is used as a

food additive Food additives are substances added to food to preserve flavor or enhance taste, appearance, or other sensory qualities. Some additives, such as vinegar ( pickling), salt ( salting), smoke ( smoking) and sugar ( crystallization), have been used f ...

. The additive is frequently used by

fast food Fast food is a type of Mass production, mass-produced food designed for commercial resale, with a strong priority placed on speed of service. ''Fast food'' is a commercial term, limited to food sold in a restaurant or store with frozen, preheat ...

chains to absorb

fatty acid In chemistry, in particular in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated and unsaturated compounds#Organic chemistry, saturated or unsaturated. Most naturally occurring fatty acids have an ...

s and extract impurities formed while

frying Frying is the cooking of food in cooking oil, oil or another fat. Similar to sautéing, pan-fried foods are generally turned over once or twice during cooking to make sure that the food is evenly cooked, using tongs or a spatula, whilst sautéed ...

edible oils. It has good acid neutralizing properties, but the reaction appears too slow to serve as an effective non-prescription antacid.

Health effects

On March 12, 2007, Chinese health authorities halted the use of magnesium trisilicate at

Shaanxi Province Shaanxi is a province in north Northwestern China. It borders the province-level divisions of Inner Mongolia to the north; Shanxi and Henan to the east; Hubei, Chongqing, and Sichuan to the south; and Gansu and Ningxia to the west. Shaanxi ...

KFC KFC Corporation, doing business as KFC (an abbreviation of Kentucky Fried Chicken), is an American fast food restaurant chain specializing in fried chicken and chicken sandwiches. Headquartered in Louisville, Kentucky, it is the world's se ...

franchises, suspecting it to be a possible

carcinogen A carcinogen () is any agent that promotes the development of cancer. Carcinogens can include synthetic chemicals, naturally occurring substances, physical agents such as ionizing and non-ionizing radiation, and biologic agents such as viruse ...

. As a response, China's Ministry of Health conducted tests at six outlets of KFC. The results showed chemicals in the cooking process at KFC restaurants in the country were not harmful. The Ministry of Health said tests showed that using the product to filter cooking oil had no apparent impact on health. Food scares regularly sweep the Chinese media.

References

Food additives Silicates Magnesium compounds {{inorganic-compound-stub