Silicones are made from quartz sand, a raw material available in practically unlimited quantities. Silicone shows excellent characteristics such as low chemical reactivity, low toxicity, and thermal stability (constancy of properties over a wide temperature range of −100 to 250 °C).
Health Canada states: There are no known health hazards associated with the use of silicone cookware. Silicone rubber does not react with food or beverages or produce any hazardous fumes.
Global Silicones Council has done more than 1,000 studies over many decades have been conducted to assess the safety of silicones. Confirmed silicones’ safety both for human health and the environment
LFGB and FDA are two main safety standards for silicone products. One thing is for sure, silicone products that pass either one of these tests are SAFE for human use.