Seeking Your Feedback on Our Titanium Dioxide Revision Proposal

Chemical composition of Titanium Dioxide


Green Seal’s Standards define environmental leadership in today’s market. To ensure technical accuracy and to implement a high-impact sustainability program, we periodically propose standard revisions and solicit public comments to capture valuable input and expertise from the green products community.

Standards Proposal: An Exemption for Titanium Dioxide

Green Seal has proposed an exemption for titanium dioxide, which is currently prohibited in several Green Seal Standards due to its classification by the International Agency for Research on Cancer as a “Possible Human Carcinogen” via inhalation exposure. We propose this exemption only for cleaning products that are 1) enzyme-based and 2) sold in solid form (powders, bars, and tablets).

This proposed revision affects the following Green Seal Standards:

  • GS-8, Standard for Household Cleaning Products
  • GS-37, Standard for Cleaning Products for Industrial and Institutional Use
  • GS-48, Standard for Laundry Care Products for Household Use
  • GS-51, Standard for Laundry Care Products for Institutional Use
  • GS-52, Standard for Specialty Cleaning Products for Household Use
  • GS-53, Standard for Specialty Cleaning Products for Industrial and Institutional Use

This proposal is the result of a two-part Green Seal study: A market review of cleaning products and an analysis of the potential for user exposure to this colorant in this category of products. Details of the revision proposal are available here.

Seeking Feedback

As announced on April 8, 2019, we are inviting feedback from all parties including industry experts, public health researchers, product designers, raw material suppliers, product testing laboratories, product purchasers, end users, and the general public.

The Proposed Standard Revisions are open for comment until Monday, May 6, 2019, at 8:00 PM ET. Please submit all comments to using the following subject line: “Comments on Titanium Dioxide Exemption.”

Questions? Need More Time?

For questions about this process or proposal, or to request an extension, please contact Brie Welzer, Standards Program Manager, at