IATA Class 5 Classification

Organic peroxides are classified according to the degree of danger they present. All organic peroxides are classified in Division 5.2 unless the formulation contains one of the following:

• Not more than 1% available oxygen from the organic peroxide when containing not more than 1% hydrogen peroxide
• Not more than 0.5% available oxygen from the organic peroxide when containing more than 1% but not more than 7% hydrogen peroxide

Organic peroxides permitted for transport are listed in Appendix C.2. Each permitted substance is assigned a generic entry that is listed in Section 4.2 List of Dangerous Goods, from UN 3103 to UN 3120. The generic entry specifies the organic peroxide type, labeled B through F, if it is a solid or a liquid, and if temperature control is required. Organic peroxides that require temperature control are forbidden for air transport unless exempted by the appropriate State authority. Organic peroxides that are not listed in Appendix C.2 must be assigned a generic entry by the appropriate authority from the State of origin.

Decomposition can be started by heat, contact with impurities (such as acid or heavy metals), friction, or impact. The rate of decomposition increases with temperature and varies based on the peroxide formulation. Harmful or flammable gases and vapors may result from the decomposition.

Examples of organic peroxides include:

• Hydrogen peroxide
• Calcium peroxide
• Fertilizers
• Pool chemicals

To learn more about IATA Dangerous Goods Regulations visit our IATA DGR Online Training Certification Courses web page.