Dry Ice Packaging and Labeling Instructions - Class 9 UN 1845

Dry ice is a regulated substance and must be packaged, marked and labeled appropriately to be transported under Department of Transportation (DOT) guidelines. See below for appropriate steps to ensure your package's compliance.


To ensure the safe transportation of Class 9 UN 1845 with dry ice, it is vital to adhere to the applicable regulations set forth by the United Nations and the International Air Transport Association (IATA). These regulations provide specific guidelines for packaging, documentation, marking, and handling procedures. 

Dry ice can be a very serious hazard in a small space that isn't well-ventilated. As dry ice melts, it turns into carbon dioxide gas. In a small space, this gas can build up. If enough carbon dioxide gas is present, a person can become unconscious, and in some cases, die. Therefore, dry ice is regulated for transport and must be packaged, marked and labeled appropriately.

Class 9 UN 1845 shipping with dry ice offers numerous benefits and is widely used in various industries. Some notable applications include:

  1. Food Industry: Dry ice helps maintain the freshness and quality of perishable food items during transport, including seafood, fruits, and vegetables.

  2. Pharmaceuticals: Many temperature-sensitive pharmaceuticals, vaccines, and biological samples require cold chain logistics, and dry ice plays a vital role in preserving their efficacy.

  3. Laboratory and Research: Scientific experiments, clinical samples, and certain chemicals often need to be transported under controlled conditions, making dry ice an ideal choice.

To safely ship Class 9 UN 1845 goods with dry ice, several important regulatory requirements and safety measures must be followed:

  1. Packaging: Proper packaging is crucial to prevent any leaks, spills, or damage during transit. The packaging should be robust, leak-proof, and capable of withstanding the extreme temperatures associated with dry ice.

  2. Labeling and Documentation: All packages containing dry ice must be labeled appropriately to indicate the presence of hazardous material. In addition, proper documentation, including shipping papers, manifests, and safety data sheets, must accompany the shipment to provide crucial information to handlers and emergency personnel if required.

  3. Ventilation: Adequate ventilation in transport vehicles or containers is essential to prevent the accumulation of carbon dioxide gas. This helps maintain a safe working environment for personnel involved in handling or unloading the shipment.

  4. Training and Awareness: Individuals responsible for handling and transporting Class 9 UN 1845 shipments with dry ice must receive proper training on the potential hazards, safety procedures, and emergency response protocols. This ensures they are equipped with the knowledge and skills needed to mitigate risks effectively.

How to Prepare Shipments Containing Dry Ice


  1. Dry ice releases carbon dioxide gas which can build up enough pressure to rupture the packaging. You must ensure the packaging you use allows the release of this pressure to prevent rupturing the package. For example, do not use steel drums or jerricans as outer packaging, and do not place dry ice within sealed plastic bags.
  2. Use good quality fiberboard (corrugated cardboard), plastic or wooden boxes as the outer box. Styrofoam must not be used as an outer packaging.
  3. A layer of Styrofoam within a box works well as insulation. Ensure the Styrofoam IS NOT sealed to be airtight.
  4. The maximum amount of dry ice per package varies based on destination.


  1. The following package markings are required:

    1. Dry Ice (or Carbon Dioxide Solid) Note: The Proper Shipping Name, namely Dry Ice (or Carbon Dioxide Solid) must be on the same surface of the package as the hazard label or Class 9 label, when package dimensions are adequate.

    2. UN 1845

    3. The net quantity of dry ice in the package in kilograms

  2. The name and address of both the shipper and recipient must be durably marked. This information can be marked on the package itself, or you can mark the shipper and recipient in the fields provided on the Dry Ice Label

Dry Ice UN 1845 shipper address


  1. A Class 9 label is required. Do NOT write inside the diamond border of the label.
  2. You are required to note the amount of dry ice either directly on the box or in the spot provided on the label. (Bottom-right corner of the label)
  3. You are required to note the name and address of the shipper and recipient on the box or in the specified area of the label.

UN 1845 Label

Discover how Mercury can streamline your dry ice shipping process, ensuring compliance with Class 9 UN 1845 regulations. Get in touch today to unlock efficient, reliable, and safe transportation solutions for your business. 

Dry Ice Labeling

Hazardous Materials

Guide to Shipping with Hazardous Materials

At Mercury, we prioritize safe and compliant transportation of goods. To assist our clients, we've created a guide on shipping Dangerous Goods (DG).

Questions or need a quote? If you require further assistance or have any inquiries, feel free to reach out to us by completing the contact form or calling us at 617-723-5205. We will be glad to assist you with your shipping requirements. 

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