In the Federal Register of March 22, 2024 (89 FR 20306), FDA issued a final rule to amend its regulations at § 170.105 (21 CFR 170.105) to provide additional reasons, other than safety, that may form the basis to determine that an FCN is no longer effective. One reason we may determine that an FCN is no longer effective is when the manufacturer or supplier has ceased or will cease the production, supply, or use of the food contact substance for its intended use authorized by the FCN (referred to as “abandonment”).
