How long will dry ice last in a freezer?
In a standard freezer, you will need 25-30 pounds of dry ice to keep food frozen for one day. If you have a larger freezer you can plan on needing around 3 pounds for each cubic foot of freezer space. Less dry ice will be needed for the refrigerator since the food will not have to be frozen.
Q: Can I save dry ice in my freezer? A: No. Dry ice turns to a gas at –109.3° F, so even a freezer will be far too warm to prevent that from happening. And dry ice should never be kept in a walk-in freezer, because it produces carbon dioxide that can be hazardous in poorly ventilated areas.
Dry ice should not be kept in a home freezer. You can keep dry ice in a Styrofoam container, such as a cooler, that is not airtight. It can be kept in there until it sublimates (turns into a gas), usually within 18 to 24 hours.
The following table for how long dry ice lasts is based on an average five-pound brick of dry ice that remains whole (not broken into pieces): In a cooler – 18-24 hours. Outdoors – 3-5 hours. In liquid – 15-45 minutes.
- Use a cooler to store it. Storing dry ice in a cooler will slow down the sublimation process. ...
- Cover the ice with newspaper. While carrying the dry ice dry ice, you can cover it with a newspaper to prevent it from coming in touch with the atmosphere. ...
- Pick it up close to the destination.
Can you put dry ice in a drink? Dry ice is safe for using in cocktails, as long as you avoid swallowing and use gloves and tongs during handling. A 1-inch chunk will settle to the bottom of drinks and cocktails and disappear in about 5 minutes.
At -109 degrees F, dry ice can replace the cooling power of a refrigerator or freezer. During a power outage, place dry ice on the top shelf of the freezer and the bottom shelf of the refrigerator. In a standard freezer, you will need 25-30 pounds of dry ice to keep food frozen for one day.
Store the dry ice in the cooler and towel used to buy it in a well-ventilated area. Coolers are not airtight so as the dry ice evaporates some of the gas will escape. Do not store the dry ice in your refrigerator or freezer. Do not store it in a tightly enclosed area.
Dry ice stored in a cooler will last for 18-24 hours, other storage times and conditions are listed below.
For instance, 10 pounds of dry ice will last about 24 hours in a 25-quart cooler. However, if you use an extra five pounds for a total of 15, you can double your cooling time to 48 hours. If you have a larger cooler, you will naturally need more dry ice.
How much is dry ice at Walmart?
The Cost of Dry Ice at Walmart
At Walmart, a pound of dry ice is sold for $1.44, while other stores sold theirs per pound from $1.00- $3.00.
On average, the price ranges between $1.00 to $3.00 per pound. Some retailers also offer discounts on bulk purchases.

Most of the items that have to be kept cold and insulated are shipped inside of styrofoam boxes. A 1-pound bag of dry ice can last anywhere between 12 to 24 hours inside of these boxes. Having 2 of these bags inside of the shipping box and you could get between 18 to 36 hours before the dry ice evaporated.
While it's almost certainly less expensive to get dry ice from a store, it's possible to make it yourself using a CO2 fire extinguisher or pressurized carbon dioxide in a tank or cartridge. You can get carbon dioxide at several types of stores (sporting good stores and some cookware stores), or you can order it online.
Dry ice should never be placed in a closed container include a plastic container, glass container, ice chest, or freezer. Never use dry ice or store dry ice in a place without ventilation. Use thick gloves designed for handling dangerous substances whenever you need to touch dry ice.
IF TRANSPORTING IN THE PASSENGER COMPARTMENT OR TRUNK OF A VEHICLE, LIMIT DRY ICE TO SMALL QUANTITIES AND OPEN ALL WINDOWS OR ENSURE CONSTANT SUPPLY OF FRESH AIR FOR THE DURATION OF THE TRIP. IMPROPERLY DISPOSED DRY ICE CAN CREATE A HAZARDOUS ATMOSPHERE, CAN POSE THREATS TO HUMANS AND ANIMALS, AND CAN ATTRACT INSECTS.
DO'S AND DON'TS TO HANDLE DRY ICE SAFELY:
food. Place dry ice on top of cardboard with food below - dry ice will freeze any food that it touches. # Do not put your head directly into the freezer when using dry ice. # Do not breath in vapors - they can cause suffocation or extreme breathing problems.
Dry ice is available at Walmart for about $1.44 per pound; however, Walmart only carries one brand, Penguin Brand dry ice, which you can also order online depending on where you live.
Biting into a solid piece of dry ice—at a temperature below -109.3 °F / -78 °C—would be a potentially dangerous, and certainly unpleasant, experience.
Store the dry ice in the cooler and towel used to buy it in a well-ventilated area. Coolers are not airtight so as the dry ice evaporates some of the gas will escape. Do not store the dry ice in your refrigerator or freezer. Do not store it in a tightly enclosed area.
Is it safe to put dry ice in refrigerator?
Use Dry Ice Safely
The quantity of dry ice used in a regular freezer or refrigerator is unlikely to produce carbon dioxide gas in sufficient quantity to cause a health problem. Dry ice can readily be used to keep foods cool in those types of containers.
For instance, 10 pounds of dry ice will last about 24 hours in a 25-quart cooler. However, if you use an extra five pounds for a total of 15, you can double your cooling time to 48 hours. If you have a larger cooler, you will naturally need more dry ice.
Cover the outside of the dry-ice block with a few layers of newspaper, towels or a paper bag. This will add insulation to the block, slowing sublimation. Pack any airspace inside the cooler with these insulators, because the air can cause sublimation over time.