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Silicone manufacturers make up a responsible modern industry which works hard to make sure that its products are safe for health and the environment. The industry's commitment is expressed by going beyond international and national regulations and carrying out a wide range of research projects. Producers are also committed to transparency and working closely with regulators and other stakeholders.

Silicones are a broad family of substances, sharing a common chemistry but which are very different at the level of individual members of the class.

Siloxanes are basic members of the silicone family. Cyclic siloxanes (known as D4, D5 or D6) are commonly used in several applications where they bring special benefits to many uses. In response to public demand for authoritative information on the properties and the safety of chemical substances, this website is dedicated to providing an extensive description of their properties including recent research.

Health and environmental assessments of chemicals are a relatively new science which requires a high level of scientific expertise. The information available in this website is a summary of several in-depth scientific assessments including the outcome of recent research and is intended to be generally understood by the scientifically educated public. Despite our best efforts, the meaning of some scientific terms might not always be clear. Interested visitors are invited to contact CES if they wish to have further details or explanations.