The entries in bold dark print shown in Column B of DGR 4.2 List of Dangerous Goods represent Proper Shipping Names (PSN) to be used for declaring dangerous goods on the Shipper’s Declaration for Dangerous Goods.
The light print which follow the PSN are explanatory entries of the PSN. They are not conditions for carriage but are definitions of the PSN. For instance, the definition of UN 3257 is that the liquid “is at or above 100 degrees C and below its flash point (including molten metals, molten salts, etc)”. Similar light print entries following the PSNs of UN 3256 and UN 3258 are also definitions and not allowable conditions. The definitions of these three substances are also shown in Appendix A under Elevated temperature substance.
Elevated temperature substances are fundamentally forbidden for air transportation as listed in DGR 2.1.2 (e). For exemption, the shipper must obtain approvals from the States concerned per DGR 22.214.171.124.