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14
APPENDIX 2
DEFINITION OF THE SCF LISTS
Substances for which the Committee was able to express an opinion

List 0

Substances, e.g. foods, which may be used in the production of plastic materials and articles, e.g. food
ingredients and certain substances known from the intermediate metabolism in man and for which an
ADI need not be established for this purpose.
List 1
Substances, e.g. food additives, for which an ADI (=Acceptable Daily Intake), a t-ADI (=temporary
ADI), a MTDI (=Maximum Tolerable Daily Intake), a PMTDI (=Provisional Maximum Tolerable
Daily Intake), a PTWI (=Provisional Tolerable Weekly Intake) or the classification "acceptable" has
been established by this Committee or by JECFA.
List 2
Substances for which a TDI or a t-TDI has been established by this Committee.
List 3
Substances for which an ADI or a TDI could not be established, but where the present use could be
accepted.
Some of these substances are self-limiting because of their organoleptic properties or are volatile and
therefore unlikely to be present in the finished product. For other substances with very low migration,
a TDI has not been set, but the maximum level to be used in any packaging material or a specific limit
of migration is stated. This is because the available toxicological data would give a TDI which allows
that a specific limit of migration or a composition limit could be fixed at levels very much higher than
the maximum likely intakes arising from present uses of the additive.
LIST 4 (for monomers)
Section 4A
Substances for which an ADI or TDI could not be established, but which could be used if the
substance migrating into foods or in food simulants is not detectable by an agreed sensitive method.
Section 4B
Substances for which an ADI or TDI could not be established, but which could be used if the levels of
monomer residues in materials and articles intended to come into contact with foodstuffs are reduced
as much as possible.
LIST 4 (for additives)
Substances for which an ADI or TDI could not be established, but which could be used if the
substance migrating into foods or in food simulants is not detectable by an agreed sensitive method.