This standard applies to fumed silica produced by the gas phase method (hydrolysis of oxysilane in an oxygen-hydrogen flame), silica gel and hydrated silica produced by the colloidal method (reaction of deep sodium silicate solution with acid). Precipitation method (from silicic acid Sodium solution and acid reaction) produced precipitated silica. 2 Molecular formula and relative molecular mass
GB 25576-2020 history
2020GB 25576-2020 National Food Safety Standard Food Additive Silica
2010GB 25576-2010 National Food Safety Standard Food Additive Silicon Dioxide