|25||Protected from sources of heat|
|52||Stow “separated from” acids.1 2|
|53||Stow “separated from” alkaline compounds.2|
1For waste cyanides or waste cyanide mixtures or solutions, refer to §173.12(e) of this subchapter.
2 Class 8 materials in PG II or III that otherwise are required to be segregated from one another may be transported in the same cargo transport unit, whether in the same packaging or not, provided the substances do not react dangerously with each other to cause combustion and/or evolution of considerable heat, or of flammable, toxic or asphyxiant gases, or the formation of corrosive or unstable substances; and the package does not contain more than 30 L (7.8 gallons) for liquids or 30 kg (66 lbs.) for solids.
Source: 49 CFR §176.84