Is silicon dioxide safe to consume? The FDA considers silicon dioxide in food generally safe for human consumption as long as it's consumed in small amounts. Place the orthosilicic acid into a heat-safe glass or porcelain dish and heat it over a flame for about 5 minutes. The orthosilicic acid dries to form silicon dioxide, SiO2, your pure sand. Silicon dioxide, also known as synthetic amorphous silica (SAS), is used by food manufacturers as an anticaking agent in spices or creamers to ensure fine-flowing powders or to absorb water. According to Commission Regulation (EU) No 231/2012, the food additive silicon dioxide (E 551) is defined as 'an amorphous substance, which is produced synthetically by either a vapor-phase hydrolysis process, yielding fumed silica, or by a wet process, yielding precipitated silica, silica gel or hydrous silica. Silica sand is the primary source of silicon dioxide essential in manufacturing Glass. To be suitable for producing Glass, there must be a very high proportion of silica (above 95%) in the composition of the sand. That's why most sand deposits are not of sufficient purity for glassmaking. Silicon dioxide has a very high melting point. Other substances are added to silicon dioxide to make Glass. Glass melts at a lower temperature than silicon dioxide. Silicosis is a lung disease caused by inhaling very tiny crystalline particles of silicon dioxide, or silica. If you have it, you'll have coughing, inflammation (swelling), and fibrosis (scarring) symptoms. So is silicone sustainable? Silicone is more sustainable than single-use plastic as it can be used many times and has long usable life. However, it takes fossil fuel energy to produce, and recycling can be harder. If you are looking for high quality, high purity and cost-effective silicon dioxide, or if you require the latest price of silicon dioxide, please feel free to email contact mis-asia.