Dry Ice Cold Chain Shipping Guide (UN1845)
Detailed resolution of the operating processes, temperature control, packaging requirements and care for dry ice (UN1845) cold chain transport.
What's a dry ice cold chain?
Dry ice (solid carbon dioxide, UN1845) is a commonly used cold chain transport source at temperatures of about -78.5°C. Dry ice cold chain transport is widely used for the international transport of temperature-sensitive goods such as biological reagents, vaccines, medical samples and biological products.
The danger of dry ice.
Dry ice belongs to Class 9 Dangerous (Miscellaneous Dangerous Goods), UN No. 1845. In transport, care should be taken that:
- Dry ice rises to generate carbon dioxide gas, and there's a risk of asphyxiation in closed space.
- Direct contact can cause freezing.
- Transport packaging requires air vents to prevent accumulation of air pressure
- Declared dry ice as clean as required by IATA.
Cold chain temperature range
| Temperature Range | Applicable goods | Cold Source |
|---|---|---|
| 2°C ~ 8°C | Vaccines, medicines, biological agents | Ice bag/gel ice bag |
| -20°C ~ -40°C | Special reagents, enzymes | Dry ice (appropriate) |
| -78°C | Biological samples, cell strains, virus samples | Dry ice (full) |
Operating Process
- Requirement confirmation:Confirm cargo temperature requirements, duration of transport, destination
- Packaging selection:Select the appropriate size to calculate the amount of dry ice based on the length of the transport
- Temperature recorder:Place the temperature recorder, monitor the temperature in the box for the entire time.
- UN Declaration:Declares dry ice as a UN1845 hazard as required by IATA.
- Transport tracking:Follow logistics from full course, confirm the temperature record is complete upon arrival.
FAQ
Q: How long can dry ice cold chains last?
Assess the target temperature range, packaging configuration, payload, ambient conditions and route. No original project temperature records have been supplied to verify transport performance or duration. Supplier packaging specifications do not establish the outcome of a GENORDA shipment.
Q: What documents are needed for dry ice transport?
A: The goods MSDS (if applicable) are to be supplied and dry ice itself declared as UN1845. Temperature records are available upon arrival.
Declarations of exemption:This information is based on GENORDA's cold chain operation experience for reference purposes only. For specific cold chain programmes, consult the GENORDA compliance team.
Article Information
References
- •IATA Dangerous Goods Regulations, 67th Edition (2026), Dry Ice Section
- •WHO Vaccine Cold Chain Storage and Transport Guidelines
- •GENORDA internal cold chain operation SOP (internal file)