| Label | Definition |
| DOCTYPE | An indicator of the status of the toxicology information available for the substance in PAFA (administrative and chemical information is available on all substances): |
| |
| ASP | Fully up-to-date toxicology information has been sought. |
| EAF | There is reported use of the substance, but it has not yet been assigned for toxicology literature search. |
| NEW | There is reported use of the substance, and an initial toxicology literature search is in progress. |
| NIL | Although listed as a added to food, there is no current reported use of the substance, and, therefore, although toxicology information may be available in PAFA, it is not being updated. |
| NUL | There is no reported use of the substance and there is no toxicology information available in PAFA. |
| BAN | The substance was formerly approved as a food additive but is now banned; there may be some toxicology data available. |
|
| DOCNUM | PAFA database number of the Food Additive Safety Profile volume containing the printed source information concerning the substance. |
| MAINTERM | The name of the substance as recognized by CFSAN |
| CAS RN OR OTHER CODE | Chemical Abstract Service (CAS) Registry Number for the substance or a numerical code assigned by CFSAN to those substances that do not have a CAS Registry Number (888nnnnnn or 977nnnnnn-series) |
| REGNUM | Regulation numbers in Title 21 of the U.S. Code of Federal Regulations where the chemical appears. |
