Moin,
die ICAO-TI 2025-2026 Edition liegt mir in englisch vor. Relevant ist hier m.E. die Einleitung zur PI975:
"This packing instruction is only permitted for articles which do not have an existing proper shipping name and which contain only environmentally hazardous substances where the quantity of the environmentally hazardous substance in the article exceeds 5 L or 5 kg. In addition to the environmentally hazardous substances, the article may also contain lithium cells or batteries that comply with Section II of Packing Instruction 967 or Section II of Packing Instruction 970, as applicable."