Two or more dangerous goods or dangerous goods and other goods shall not be packed in the same outer packaging if they react dangerously with each other and cause:
- combustion and/or evolution of considerable heat;
- evolution of flammable, toxic or asphyxiant gases;
- the formation of corrosive substances; or
- the formation of unstable substances
When we have more than one dangerous goods whether in same outer packaging or in different outer packaging but in same cargo transport unit we must check segregation provisions between the goods. Refer Chapter 7.2 of IMDG Code for full details.