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refrigerator

Submitted by sat on 28 October 2015

Answer reviewed 27 February 2023

Storage of bromine and iodine

Bromine and iodine are both classified as Class 8 (Corrosive) dangerous goods. Bromine water and iodine should be stored in their own tightly sealed containers within a secondary container, either in a corrosives cabinet or in the corrosives section of the chemical store, and segregated from combustible material, organic substances, reducing agents and metals. Refer to the Safety Data Sheets (SDSs) for guidance on handling and storing chemicals.

For more specific information for Bromine and Iodine in the school setting, see the Chemical Management Handbook for Australian Schools - Edition 32

Corrosive chemicals such as bromine water and iodine should not be stored in a refrigerator due to the lack of ventilation, and the ability of the vapours/fumes to corrode the metal components of the fridge. It is also important to check the lids periodically for cracks. Dilute iodine solution (iodine/potassium iodide) goes off very quickly, so it is best practice to prepare dilute iodine solutions as required.

Location of refrigerators

‘There must be no sources of ignition within the chemical store. Switching devices for light fittings or ventilation fans must be outside the storeroom, e.g., a light switch just outside the entrance door. Gas-fired or electric element heaters and other electrical equipment including refrigerators must not be installed within a chemical store.’1

For further information, see our Information sheet AIS: Refrigerators and freezers in science

Science ASSIST recommends:

References

1 Science ASSIST. (2017). GUIDELINES for the design and planning of secondary school science facilities in Australian schools. Retrieved from the Science ASSIST website: https://assist.asta.edu.au/resource/4175/guidelines-design-and-planning-...

2 Science ASSIST. (2018). Chemical Management Handbook for Australian Schools – Edition 3, Retrieved from the Science ASSIST website: https://assist.asta.edu.au/resource/4193/chemical-management-handbook-au...

Chem-Supply. (2021). Bromine water, Safety Data Sheet. Search https://shop.chemsupply.com.au/ to source the latest Safety Data Sheet via the product information page.

Chem-Supply. (2020). Iodine, Safety Data Sheet. Search https://shop.chemsupply.com.au/ to source the latest Safety Data Sheet via the product information page.

The University of Queensland Occupational Health and Safety Unit. (2022). Storage of Chemicals in Fridges, Freezers and Cold Rooms - Guidelines. Retrieved from The University of Queensland website https://ppl.app.uq.edu.au/content/2.70.07-storage-chemicals-fridges-free...