To establish with reasonable certainty that an additive is not harmful under its intended conditions of use, FDA considers the projected human dietary intake of the additive, the additive's toxicological data, and other relevant information (such as published literature) available to the Agency. The following table lists the acceptable daily intakes (ADIs), where available, that have been established for the eight certified colors that are the subject of the CSPI petition. It also includes the pivotal safety study(ies) on which determination of the ADI was based and
the dose level on which the ADI was based. The ADI for these color additives was calculated using the test concentration that produced the No Observed Effect Level (NOEL) in the test animals divided by a 100-fold safety factor (10 for inter-species variability times 10 for intra-human variability).