|Preferred IUPAC name
|Jmol 3D model||Interactive image
|Molar mass||260.86 g·mol−1|
|R-phrases||R36, R37, R38|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Magnesium trisilicate is an inorganic compound that is used as a food additive. The additive is often employed by fast food chains to absorb fatty acids and remove impurities that form in edible oils during the frying process.
On March 12, 2007, Chinese health authorities seized and halted the use of magnesium trisilicate at Shaanxi Province KFC franchises, suspecting it to be a possible carcinogen. 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.
Magnesium trisilicate can be used as an antacid in the treatment of peptic ulcers. It increases the pH of gastric juice via a neutralisation reaction. It also precipitates colloidal silica, which can coat gastrointestinal mucosa conferring further protection.
It can also be used in oral pharmaceutical formulations and food products as a glidant. It is also used therapeutically as an antacid, and also for the treatment of ciprofloxacin overdose or toxicity.
It can also reduce the absorption of the antibiotic macrobid.
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