Alaska Air Cargo does accept carbon dioxide solid (commonly known as dry ice) for shipping but it must be packaged and labeled properly.
Packaging
Shipments must be tendered in packaging constructed to permit the release of carbon dioxide gas. This is to prevent a buildup of pressure that can rupture packaging. Sturdy outer packaging is required. Styrofoam coolers are not allowed.
Labeling and Marking
Packages that contain 5.5 lbs. or less of dry ice must be marked “Dry Ice” or “Carbon Dioxide, Solid,” followed by the net weight of the dry ice and the identification of the contents being cooled or frozen.
Packages that contain more than 5.5 lbs. of dry ice must be marked with the net quantity of dry ice, the shipper and consignee’s names and addresses, and a Class 9 Miscellaneous hazard label. If an air waybill is used, the Nature and Quantity of Goods field must contain the Proper Shipping Name (“Dry Ice” or “Carbon dioxide, solid”), Class 9, UN1845, the number of packages and the net weight of dry ice in each package.
Alaska Air Cargo ships lithium cells or batteries provided they are in good condition. Defective or damaged lithium batteries or those intended for waste disposal or recycling can't be shipped. Shipments of UN 3481 and UN 3091 lithium batteries packed with or contained in equipment are acecpted. UN 3480 and UN 3090 lithium batteries in a package without equipment (including portable rechargers) are only accepted for transport on freighter aircraft.
Technical Specifications
You may need to ask your battery manufacturer for technical data before tendering battery shipments as cargo. For more specific requirements for shipping lithium batteries, please refer to the following the FAA SafeCargo website.
Many common household products contain or are designated as dangerous goods; hairspray, cooking spray, nail polish and ammunition, to name a few. What is allowed to pack in baggage when flying may not be allowed to ship in cargo. If you're unsure if your items are cleared to fly, please read the information available on this page to familiarize yourself with the ins and outs of shipping dangerous goods.
Examples of commonly shipped dangerous goods:
While firearms and ammunition may be shipped as cargo, there are restrictions you need to be aware of as many products associated with firearms are considered regulated dangerous goods and must be declared and properly packaged.