Dry Ice: The Ultimate Solution for Shipping Perishables

In the world of logistics, the challenge of shipping perishable items efficiently and safely is a constant concern. This is where dry ice, a versatile and powerful cooling agent, plays a pivotal role. Dry ice, or solid carbon dioxide, remains a preferred choice for many businesses and individuals needing to transport perishable goods over long distances. This blog post explores the advantages of using dry ice for shipping perishables and provides practical tips for packaging and shipping with dry ice.

Understanding Dry Ice

Dry ice is the solid form of carbon dioxide (CO2) and is extremely cold at -78.5°C (-109.3°F). Unlike regular ice, dry ice doesn’t melt into a liquid but instead sublimates, turning directly from a solid to a gas. This unique property makes it an ideal substance for keeping items frozen without the mess of water and the risk of spoiling the contents.

Advantages of Using Dry Ice for Shipping

  1. Maintains Lower Temperatures: Dry ice keeps perishables frozen longer than regular ice, ensuring they stay fresh during transit.
  2. No Residue: As it sublimates, dry ice doesn’t leave any liquid residue, keeping the shipped items and packaging dry and intact.
  3. Weight Efficiency: Dry ice is lighter than water ice, reducing shipping costs and making it more efficient for air transport.
  4. Safety and Compliance: Dry ice is non-toxic and non-flammable, making it a safe choice for shipping various goods, including food and medical supplies.

Packaging Tips with Dry Ice

  1. Choose the Right Container: Use a well-insulated container, such as a styrofoam box, to slow down the sublimation of dry ice and maintain the cold temperature.
  2. Use Sufficient Dry Ice: The amount of dry ice needed depends on the shipping duration and the type of perishables. As a general rule, 5-10 pounds of dry ice should suffice for a 24-hour period.
  3. Protect Perishables from Direct Contact: Place a barrier, like cardboard or bubble wrap, between the dry ice and the perishable goods to prevent freezing burns.
  4. Allow for Gas Venting: As dry ice sublimates into CO2 gas, it’s important to use a container that allows for venting to prevent pressure build-up and potential rupture.
  5. Label the Package Appropriately: Clearly label the package as containing dry ice, and indicate the net weight of dry ice used.
  6. Include Packing Slip: Ensure all necessary shipping documents are included and visible.

Shipping Considerations

Airline has 5 lb maximum

Ground shipping has no maximum weight of dry ice to ship.

  1. Choose a Fast Shipping Service: Opt for the quickest delivery option to ensure perishables remain frozen throughout transit.
  2. Check Regulations: Be aware of carrier and destination regulations regarding the shipment of dry ice. Some carriers have specific guidelines on the amount of dry ice allowed per package.
  3. Notify the Recipient: Inform the recipient about the expected delivery date and the inclusion of dry ice to ensure they handle it safely upon arrival.
  4. Monitor Weather Conditions: Extreme temperatures, both hot and cold, can affect the sublimation rate of dry ice. Plan accordingly.

Safety in Handling Dry Ice

  1. Use Protective Gear: Always handle dry ice with insulated gloves as it can cause frostbite-like injuries.
  2. Avoid Confined Spaces: Pack and open dry ice shipments in well-ventilated areas to prevent CO2 buildup.
  3. Educate Staff and Customers: Ensure that everyone involved in the shipping process is aware of the proper handling and risks associated with dry ice.


Dry ice is an invaluable tool in the world of shipping, especially for perishable goods. Its ability to maintain low temperatures for extended periods, combined with its clean and efficient nature, makes it an ideal choice for businesses and individuals looking to transport sensitive items. By following proper packaging and safety guidelines, one can leverage the benefits of dry ice to ensure that perishable goods arrive at their destination in optimal condition. As the demand for reliable cold chain logistics grows, the role of dry ice in the shipping industry is set to become increasingly significant, offering a cold and steady hand in the dynamic world of transportation.

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