HAZMAT Class 9 Miscellaneous Dangerous Goods

Any article or substance that presents a danger but is not covered by other classes is included in Class 9 Miscellaneous Substances and Articles. Class 9 includes, but is not limited to, the following substances and articles:

• Aviation-regulated solids and liquids
• Magnetized material
• Elevated-temperature substances
• Environmentally hazardous substances
• Genetically modified micro-organisms (GMMOs) and genetically modified organisms (GMOs)
• Lithium batteries
• Other miscellaneous articles
  • Asbestos
  • Dry ice
  • Chemical and first aid kits
  • Battery-powered equipment

Dry Ice

Carbon dioxide in its solid form, commonly known as dry ice, is often used as a refrigerant to maintain samples or goods in either a frozen or cold state. Even non-dangerous goods shipped with dry ice must be considered as a dangerous good under these Regulations.

Dry ice is identified as UN 1845. It can pose the following hazards:

• Explosion: Dry ice releases large volumes of carbon dioxide gas as it sublimates. If enclosed in a sealed container, this release of gas can cause a dangerous buildup of pressure, and ultimately, an explosion.
• Suffocation: The presence of a large volume of carbon dioxide in a confined or poorly ventilated space can pose an asphyxiation hazard due to a lack of available oxygen.
• Temperature: Carbon dioxide exists as a solid at approximately -110° F (-78.89° C). This extremely low temperature can rapidly cause severe frostbite when in contact with exposed skin.

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