Is Silicone Toxic?
FDA rules permit silicone for repeated food contact, with conditions. Health Canada describes silicone as a synthetic rubber made of bonded silicon and oxygen. The FDA’s regulation for rubber articles meant for repeated use with food lists silicone elastomers among its permitted materials, and requires finished articles to be thoroughly cleaned before their first use with food.
Heat is the practical limit. Health Canada advises against using silicone bakeware above 220 °C (428 °F), because it will melt at high temperatures.
Research on what migrates from silicone is ongoing. Health Canada says a 2023 assessment found siloxanes are not harmful to human health or the environment, and that it is researching silicone bakeware to keep assessing any potential risks. A 2026 study of silicone food contact materials sold in China, published in Foods, found total cyclic siloxane migration above a proposed action limit for adults in several samples, with negligible risk for the siloxanes D4 and D5 but a potential concern for D3.
Sources checked September 15, 2026. Every point below links the page it came from.
The sources behind this answer
- Government sourceHealth Canada describes silicone as a synthetic rubber that contains bonded silicon and oxygen. Health Canada ↗
- Regulatory filingThe FDA’s regulation for rubber articles intended for repeated use with food, 21 CFR 177.2600, lists silicone elastomers among its permitted materials. US FDA, Code of Federal Regulations ↗
- Regulatory filingThe same regulation requires finished rubber articles intended for repeated food contact to be thoroughly cleansed before their first use with food. US FDA, Code of Federal Regulations ↗
- Government sourceHealth Canada advises against using silicone bakeware at temperatures above 220 °C (428 °F), saying it will melt at high temperatures. Health Canada ↗
- Government sourceHealth Canada says a 2023 assessment found siloxanes are not harmful to human health or the environment, and that it is researching silicone bakeware to continue assessing any potential risks. Health Canada ↗
- StudyA 2026 study in Foods of silicone food contact materials sold in China found total cyclic siloxane migration above a proposed action limit for adults in several samples, with negligible risk for D4 and D5 but a potential concern for D3. Foods, via NIH PubMed Central ↗
Sources checked September 15, 2026. A brand statement is the company’s own claim, which we report but have not verified. Our grades are model-based estimates, not lab tests.