UN 3251 Isosorbide-5-mononitrate UN Rec. 23rd rev. ed. (Shortinfo)

During the course of transport, this substance shall be protected from direct sunshine and stored (or kept) in a cool and well-ventilated place, away from all sources of heat.

Formulations of these substances containing not less than 30% non-volatile, non-flammable phlegmatizer are not subject to these Regulations.