Resources

Cradle to Cradle Certified Restricted Substances List (RSL)

The Restricted Substances List (RSL) contains the chemical substances that are restricted from use above the applicable maximum allowable concentrations in products certified to the Cradle to Cradle Certified Product Standard and products with a C2C Certified Material Health Certificate™. Please see the ‘Background’ tab in the RSL documents and Section 4.1 of the Cradle to Cradle Certified Product Standard, Version 4.0 for more detailed information on the RSL requirement.

The RSL will be updated annually in July to reflect changes to the chemical regulations on which the RSL is based. The annual update will also include any needed reference updates or clarifications. Any changes to the maximum allowable concentrations in the RSL will also be reflected in the analytical testing requirements for commonly recycled materials.

Transition Periods

A one-year transition period will follow the effective date of each annual update to the Version 4.0 RSL:

  • Version 4.0 product assessment summaries for new certifications and recertifications submitted to C2CPII from 1 July 2022 through 30 June 2023 must demonstrate compliance with the 2021 RSL or the 2022 RSL Update.
  • Version 4.0 product assessment summaries for new certifications and recertifications submitted from 1 July 2023 through 30 June 2024 must demonstrate compliance with the 2022 RSL Update or the 2023 RSL Update (to be released in July 2023).

The most recent update to the RSL and its associated RSL declaration form should be used in all new certification and recertification assessment projects to ensure the product is in compliance with the RSL, and to avoid the need for suppliers to resign RSL declarations after each RSL's ‘sunset date’. The Cradle to Cradle Certified RSL declaration form that applicant companies and their suppliers are required to use for declaring conformance with the RSL is available from the Cradle to Cradle Certified assessors.