What is silicon dioxide as food additive

Introduction: silica is also a kind of food additive, which is widely used Let's learn what kind of food additive silica is The chemical formula of silicon dioxide is SiO 2, which is insoluble in water Insoluble in acid, but soluble in hydrofluoric acid and hot concentrated phosphoric acid, it can work with molten bases There are crystalline silica and amorphous silica in nature Silica is widely used for making glass, water glass, pottery, enamel, refractory, aerogel felt, ferrosilicon, molding sand, silicon and cement General stone is mainly composed of silica and calcium carbonate So what kind of food additive is silicon dioxide? Silicon dioxide is used to make flat glass, glass products, casting sand, glass fiber, ceramic glaze, sand blasting for rust prevention, sand for filtration, flux, refractory and lightweight bubble concrete Silica is widely used Crystal, which is rare in nature, can be used to make important parts, optical instruments and crafts of electronic industry Silica is an important raw material for the manufacture of optical fiber Generally pure quartz can be used to make quartz glass The expansion coefficient of quartz glass is very small, which is equal to 1 / 18 of that of ordinary glass It can withstand the drastic change of temperature and has good acid resistance (except HF) Therefore, quartz glass is often used to make high temperature resistant chemical instruments Quartz sand is often used as glass raw materials and building materials Hygienic standard for the use of food additives: silica is used in egg powder, milk powder, cocoa powder, cocoa butter, sugar powder, fat planting powder, instant coffee, powder soup Nowadays, many foods have food additives, so what is food additives? In fact, food additives are synthetic or natural substances added into food to improve the quality of food such as color, fragrance and taste, as well as the needs of antisepsis and processing technology Some food additives are harmful to human body, but China's food safety detector can accurately check whether the food is safe and whether there is excessive use of additives, so that we can eat food more safely If you want to know more about food additives, please go to Baibai safety net Editor in charge: he xianrob