How To Dispose Of Dry Ice

How to dispose of dry ice? You can dispose of dry ice using six different methods. One can dispose of the office by leaving ice outside to transform it into gas. You can dispose of it by leaving it inside and transform it into gas. Thirdly you can use hot water to melt ice. The fourth method to dispose of the office includes breaking up dry ice in order to sublimate it in no time. Moreover, you can use a cooler to dispose of dry ice. Dry ice may be safely disposed of by leaving it outdoors or in a well-ventilated area, where it will convert to gas and vanish. Dry ice should not be disposed of in the toilet or tank because it may frost the liquid in your pipes, causing them to break.

What is Dry Ice:

Dry ice is carbon dioxide that has been frozen (CO2). In order to convert pure CO2 gas into a liquid, it is first compressed and chilled in the ice production process. The liquid CO2 is then put into a dry ice manufacturing machine, which releases the pressure, resulting in a CO2 “flake” that is compacted into granules or chunks of dry ice.

Density 0.9167–0.9168 g/cm3
Refractive index 1.309
Young’s modulus 3400 to 37,500
Tensile strength 5 to 18 kg-force/cm2
Compressive strength 24 to 60 kg-force/cm
Poisson’s ratio 0.36±0.13
Thermal conductivity 0.0053(1 + 0.105 θ) cal/(cm s K), θ = temperature in °C
Specific heat capacity 0.5057 − 0.001863 θ cal/(g K), θ = absolute value of temperature in °C

What Is Sublimation and How Does It Work?

Dry ice has a surface temperature of –109.3° F (–57° C). Dry ice dissolves or sublimates at this temperature. Both terms refer to when a material transforms from a gas state without first being a liquid. Dry ice will dissolve without leaving any moisture or wetness behind.

Dry ice has a wide range of industrial uses since it is very cold and vanishes without making objects wet or leave the liquid behind. It’s used to keep meals, chemicals, medical samples, and supplies safe, particularly during transit. It’s mostly used for ice blowing, a cleaning technique that removes mildew and graffiti from equipment and instruments.

What Can You Do With Dry Ice?

So, how can you use dry ice? Yes, fake fog or other foggy visual effects are possible. However, the options do not stop there.
Here are a few more applications for solid carbon dioxide.

1. Launch a rocket

When dry ice is mixed with water, it sublimes or changes from a freeze to a vapor without passing through a liquid phase. If sublimation takes place in a confined container, the co2 generated will build up pressure, which will ultimately result in a tiny burst. This similar explosive reaction may be used to send a simple rocket flying with a few additional steps.

Dry ice rockets may be made in a variety of methods, including many YouTube demos. However, one of the simplest ways just needs a Coke bottle and a piece of cardboard. (The men in the video above didn’t utilize a box; although it isn’t required, it is a good method to guarantee that you achieve the greatest possible launch.)

To begin, cut a hole in the box’s base the same height as the plastic bottle; this will be where you’ll place your projectile when it’s time to fire it. Then, at the top of the bottle, cut or drill a tiny hole to allow the gas to escape, then seal the hole with Scotch tape.

Fill the bottle with water until it’s approximately 1/3 full, then add ice cubes until it’s half full. Close the bottle quickly, place it uptrend in the shoebox, and watch your rocket take off from a safe distance. However, keep in mind that certain dry ice missiles have a propensity to launch horizontally.

2. Brew some root beer

Dry ice is just solid carbon dioxide, and co2 is what gives soda its fizz. Therefore you can create your own fizzy beverage with a piece of it.

Take one litre of water, 2 pounds of dry ice, and two grams of root beer extract to create one gallon of root beer. Some recipes ask for two cups of sugar. However, this may or may not be required depending on the root beer extract you choose.

In a big container with at least 4 gallons of capacity and a sealable top, combine the waters, extract, and glucose (if using). Toss the dry ice into the liquid in pieces using tongs. Cover the container but sometimes open it to mix the solution and discharge some of the tension that has built up within to prevent it from exploding.

Your beverage should be ready to drink in about an hour. When you go to sip your mixture, ensure there are no solid pieces of dry ice left; although gaseous carbon dioxide is safe to ingest, solid carbon dioxide may do severe harm to your internal organs. If you leave out the root beer extract, you may create seltzer water using the same method.

3. Keep your food fresh.

Food may be flash-frozen using dry ice, and it’s a better method to preserve fruit and vegetables than just putting them in the Freezer. When flash frozen produce is defrosted, it retains its original texture and does not get mushy.

Get a seven to ten lb bag of dry ice and place it in a big cooler to blast freeze your meals. Place the fruits and vegetables you wish to freeze on a baking sheet and place them on top of the ice cubes. Lock the cooler, and after your food is completely frozen, move it to a regular freezer and store it for as long as you like.

4. Defend oneself against pests

Because insects and other bugs are drawn to carbon dioxide gas, dry ice may be used to entice them away from their mammalian prey. You may greatly improve the trap’s effectiveness by putting a fabric bag with four chunks of dry ice inside near a mosquito light. Dry ice pieces strategically placed may also be used to entice bed bugs.

Some individuals use dry ice to keep bugs out of their terrariums; removing the animals, filling the tank with a few glasses of solid atmospheric co2 and hot water, covering the tank, and letting it rest for five minutes seems to work. Simply remove the cups after five minutes, cover the tank, and let it sit for two or three hours before reintroducing your animals.

How to Get Rid of Dry Ice

The dry ice comes in the shape of flake, pellet, or block. It’s often used to move temperature-sensitive goods, create fog effects, and conduct scientific investigations. Allowing dry ice to revert to its gaseous state in an open area with adequate ventilation is the best way to get rid of it. Dry ice should never be left in a restricted area because it may produce a quick burst of CO2 poisoning.

Following are the methods to dispose of dry ice:

Method 1: Sublimation of Dry Ice

1. When handling dry ice, use insulated gloves.

Dry ice may cause skin irritation if it comes into touch with it. You may get burnt or frostbite on your exposed skin after contacting ice cubes for a few seconds. Wear insulated gloves while handling dry ice to provide a sufficient barrier between your fingertips and the ice.

  • Oven mitts or winter gloves may be used to handle ice cubes for a few seconds, at least in an emergency.

  • Nitrile exam gloves will not offer enough protection against dry ice.

  • When handling dry ice, use tongs whenever feasible.

2. Sublimate dry ice in an unrestricted, well-ventilated space.

Dry ice will change from a frozen to a gas at any temperature below 109 °F (78 °C). Put the dry ice through a good area to ensure that the co2 gas does not hurt anybody. To avoid damaging your floor, place the ice cubes on a sheet of Styrofoam or hard plastic.

  • Place dry ice in a big room with glass doors or on a safe balcony, for example.

  • To minimize exposure to carbon dioxide gas, select a location where you do not spend lots of time.

  • Never put dry ice on a tiled or solid-surface countertop because the intense cold can ruin it.

3. Allow at least one day for the dry ice to sublimate fully.

It may take many days for the dry ice to fully return to a gaseous state, depending on how much you have. Allow the dry ice to rest for one full day in a well-ventilated location before checking to see whether it has sublimated. To reduce your sensitivity to the carbon dioxide gas being produced, avoid wasting so much time in this region.

  • It takes approximately 24 hours for 10 pounds of dry ice to sublimate completely.

  • It will take longer for dry ice blocks to compartmentalize than grains or flakes.


Sublimate dry ice in an unrestricted, well-ventilated space. Allow at least one day for the dry ice to sublimate fully. Dry ice can also be used to entice insects and keep them from munching on fruit and veg.

Method 2: Preventing Issues

1. Dry ice should not be disposed of in places where the general public may see it.

Leaving ice cubes in a common corridor or other public space exposes people to the danger of contact burns. It could also result in a buildup of co 2, resulting in an oxygen-deficient environment. Carbon dioxide should always be stored or disposed of in an inaccessible location to the general public.

  • Ensure animals can’t get to the dry ice while you’re getting rid of it since it may cause contact burns.

2. Dry ice should never be thrown away or down a trash compactor.

In a well-ventilated environment, dry ice must sublimate or evaporate. A buildup of carbon dioxide vapor in a confined space can result in a burst, which is extremely dangerous. Dry ice should never be thrown away in a garbage can, trashcan, or plummets a building’s garbage bin.

  • A quick burst could cause personal injury or damage to property.

3. Dry ice should not be flushed or washed down the drain.

Dry ice’s high temperature may damage your toilet’s components and pipes. It’s best not to attempt to throw it in the sink like normal ice, which melts quickly. Similarly, dumping dry ice down the loo may seem to be a quick and painless method to get rid of it, but it will almost certainly cause permanent damage to your pipework.

4. Dry ice should be stored in jars that allow carbon dioxide gas to escape.

Avoid storing dry ice in any closed container that is not designed for the storage of dry ice before discarding it. Styrofoam dry ice shipping jars and heated dry ice plastic tubs are examples of these containers. These may be purchased through a shipping business or from scientific equipment shops online.

  • Dry ice storage containers that aren’t designed for it won’t have enough protection or ventilation to keep it safe.

  • Because it is heated but not airtight, Styrofoam is an excellent dry ice storage medium.

5. If you’re carrying dry ice in your car, keep it in the trunk.

The carbon dioxide emitted by dry ice may rapidly fill a tiny passenger vehicle’s interior. This may make the motorist feel sick or dizzy, increasing the chances of an accident. If you must carry dry ice by automobile, make sure it is secured in the trunk.

  • Dry ice should not be transported over long distances.

Method 3: Use hot water to speed up the melting process

You may expedite the process by using hot water if you don’t want to sit around waiting for the ice to melt. Because water is considerably more efficient than air at transmitting heat, sublimating dry ice into gas will happen much quicker in hot water.

One of the quickest methods to dispose of dry ice is to place it in a pot of boiling water of water on the stove. When you wouldn’t want to do that, a basin or bucket filled with warm water would suffice.

The dry ice will cool and perhaps freeze the water over time. As a result, you may need to drain the chilled water and replace it with additional warm water. When compared to dry ice, even cool or ambient temperature water is hot and will hasten the rate of the dry ice dissolving. More information on how long dry ice will last in water may be found here.

Do not even put dry ice in your link or anywhere else where it may frost the water in your pipes since this could cause them to break and result in a hefty plumbing cost.

Method #4: Part Ways The Dry Ice To Make It Sublimate More Quickly

Unless you want the dry ice to vanish faster, break it into smaller pieces. It will convert into gas and vanish faster.

  • If you’re splitting up the dry ice, be sure to use gloves and safety eyewear.

  • It’s so cold that it may burn your flesh, and it can even blind you if it falls in your eye.

Method #5: Use a Cooler to Slowly Dump of Dry Ice

If you want your dry ice to survive as long as possible, store it in a high-quality cooler. It will be protected from the hot outside air and last longer.

In a cooler like a Yeti, dry ice may survive for days and can be used to keep food chilled. It won’t stay forever in a freezer and will ultimately convert to gas, but the Freezer will significantly slow down the process.

Also, ensure your cooler isn’t completely airtight to avoid pressure buildup. Will dry ice in a cooler cause an ice burst?

Method 6: Place it in the Freezer:

If you don’t want the dry ice’s “cold power” to go to waste, you may store it in your refrigerator to store frozen food.

This is OK in small amounts, but in big amounts, it will most certainly turn off your Freezer since the thermostat will detect the temps as being very low.

In certain cases, dry ice may actually harm your Freezer. For some, it’s worth it; for others, the danger of destroying your Freezer isn’t worth it. Find out whether it’s a good idea to use dry ice in your refrigerator.


Dry ice should never be thrown away in a garbage can or down a trash compactor. A buildup of carbon dioxide vapour in a confined space can result in a burst, which is extremely dangerous. Dry ice should be stored in jars that allow carbon dioxide gas to escape. If you don’t want to wait for the dry ice to evaporate, you may need to sublimate it in water.

How Do You Get Dry Ice Out of Plastic Bags?

Dry ice is often packaged in plastic bags to make it simpler to handle and to allow the gas to escape. Consider leaving the ice cubes out to reheat and convert into gas to dispose of it in garbage bags. The plastic bag may be thrown away after the dry ice is entirely gone.

What Dry Ice Shouldn’t Be Used For


  1. Do not handle dry ice with your exposed skin.

  2. Dry ice should not be positioned centrally on a solid surface or ceramic countertop because it may cause the surface to fracture.

  3. Directly expose open foodstuff in your fridge to dry ice, which may instantly freeze food. If you’re flash-freezing anything like fish, put it in a ziplock bag or vacuum-seal it before exposing it to dry ice.

  4. Keep your fridge stocked with far more than 10 pounds of dry ice each day. Even more than that may result in a buildup of carbon dioxide within the device.

  5. Do not store dry ice in your refrigerator’s freezer section; it may lower the total degree of the Freezer below the set temperature and may cause it to malfunction.

  6. Don’t throw dry ice near sewage lines or down the trash disposal, lavatory, or sink drainage; it may freeze and break pipes.

  7. Don’t put dry ice in rubbish grates, garbage cans, or other enclosed or poorly ventilated areas like a pantry. Carbon dioxide would enter the confined area as the dry ice evaporated, potentially causing asphyxia.

  8. Carbon dioxide is also heavier than oxygen, so it tends to fall into low-lying places like basements, where it may replace existing oxygen and fill the space with carbon dioxide.

  9. Place dry ice in outdoor places where people and dogs may reach it.

  10. Do not carry dry ice in a truck that is not properly ventilated. When carrying dry ice in your vehicle, uncover one or more windows. If you must leave the windows shut, switch off the indoor environment recirculation option (typically found on the center console) to allow fresh air from outside to flow inside the vehicle for optimum ventilation. To avoid carbon dioxide overexposure, don’t carry the dry ice for even more than 15 minutes at a time.

Follow These Ice Disposal Tips and Dry Ice Safety Recommendations

When handling dry ice, the following three techniques may help you reduce the risks.

1. Keep your face and fingers safe.

Dry ice may cause skin injury and frostbite due to its very low surface temperature. To assist avoid contact injuries, follow these steps:

  • Avoid touching dry ice with your hands. Exam gloves made of nitrile will not provide enough protection. Gloves that are insulated are suggested. Cryogenic gloves are made for touching very cold items.

  • Protect your eyes with eyewear such as safety goggles or a gas mask.

2. Do not store dry ice in enclosed locations with inadequate ventilation, like walk-in freezers or basements.

CO2, which is approximately 1.5 times heavier than air, may displace oxygen in tiny or confined areas. If a tiny piece of dry ice sublimes rapidly, it may generate a significant amount of CO2. CO2 is harmful in high quantities and may cause a person to cease respiration and lose consciousness rapidly. Suffocation, unconsciousness, and respiratory arrest may occur when dry ice sublimates in a confined, poorly ventilated area, such as a walk-in freezer.

3. Dry ice should not be stored in airtight containers.

If dry ice melts within a sealed container, the CO2 gas inside will pressurize the container, causing it to burst or explode. Dry ice should only be stored in jars that let gas escape.

Dry Ice Storage

To assist decrease the rate of sublimation, dry ice may be kept in non-airtight chests or buckets constructed of insulating foam. Any temperature over –109.3° F causes dry ice to sublimate. The pace at which it vaporizes varies greatly depending on the amount and the kind of dry ice used.

As per a study released by the Federal Aviation Administration, a small number of pellets will sublimate considerably faster than a single big block (FAA).

Dry ice bottles should only be stored in well-ventilated areas.

Disposal of Dry Ice

Permitting dry ice to absorb at room temperature is a good method to get rid of it, but there are certain safety considerations to keep in mind.

  • Only permit dry ice to liquefy in well-ventilated locations to prevent dangerous CO2 accumulation. • Never leave dry ice alone in public places.

  • Dry ice should never be disposed of in a toilet, sink, or trash disposal. Extreme cold may wreak havoc on plumbing.

  • Never throw dry ice out in a garbage container.

  • Dry ice should not be placed directly on marble or laminated surfaces. The cold may cause adhesives to deteriorate and break.

Dry Ice Burns: First Aid

Dry ice may cause hypothermia or ice burn if it comes into contact with the skin. For addressing dry ice contact injuries, OSHA recommends the following first aid steps:

  • Seek medical help as soon as possible.

  • Take off any clothes that aren’t completely frozen to the skin.

  • Soak the afflicted body part in warm water (not exceeding 40° C, or 104° F).

  • Do not heat the area with dry heat.

  • Avoid rubbing the afflicted region.


These are the frequently asked questions about dry ice.

1. Should I take any extra measures while utilizing dry ice?

When working with dry ice, there are a few things to keep in mind:

  • Dry ice is considerably colder than normal ice, and it may cause frostbite-like skin burns. When handling it, you should use insulated gloves. If you’re cutting or chipping it, use protective goggles and face protection.

  • Keep dry ice out of children’s reach; never consume or swallow dry ice, and avoid breathing carbon dioxide gas.

2. Is it possible to choke from dry ice?

In a confined, poorly ventilated area, dry ice may be a severe danger. Dry ice decomposes into co2 gas as it melts. This gas may build up in a short area. A person may fall unconscious and, in certain instances, die if there is enough co2 gas present.

3. Is dry ice suitable for use in a walk-in cooler or refrigerated?

Using dry ice in a walk-in refrigerator, chiller, confined truck bed, or another tight area with inadequate ventilation is very hazardous. A significant quantity of dry ice in a walk-in freezer or refrigerator may generate a lot of carbon dioxide, which can be deadly to anybody who enters the area.

4. How can you know if you’ve been subjected to too much carbon dioxide?

Excessive exposure to carbon dioxide causes headaches and trouble breathing, as well as nausea and vomiting at higher levels of exposure.

5. What are some suggestions for utilizing dry ice to keep meals cool?

Here are some suggestions for utilizing dry ice to keep meals cool:

  • Buy dry ice in the shape and size that will be needed. Cutting may be tough and hazardous.

  • Dry ice should be dried and stored that allows for some leaking. Carbon dioxide gas may build up pressure within a vase or container if it is not evacuated when dry ice melts.

6. How much dry ice do I require?

The amount of dry ice required to keep a storage fridge or refrigerator at a constant temperature varies. The following are some basic guidelines for utilizing dry ice to chill foods:

1. Keep refrigerated:

  • A household refrigerator may consume up to 10 pounds of dry ice every day.

  • Because dry ice may cause things to freeze, keep foods that might be harmed by chilling as far away from it as possible.

  • Fill the base of a home-type unit with ice. To keep your glass shelves from breaking, use newspaper or other items as insulation.

  • Cover liquids securely to prevent them from becoming carbonated when the fridge fills with CO2.

2. In the Fridge:

Place 30 - 50 pounds of dried ice on top of the food in a chest freezer every day.

3. In a Refrigerator/Freezer Combination Unit for the Home:

  • A freezer on the bottom of the unit might consume 15 to 25 lbs each day if it’s put on top of the food.

  • A freezer on top of a unit might consume 20 to 30 pounds a day if it’s put on top of and around food.

  • A device with a side-by-side freezer, positioned on top of and around food, may consume 30 to 40 pounds per day.

7. What is the best way to get rid of dry ice?

  • Do not dump dry ice in sewerage, trash disposal, or garbage chute since it may cause co2 gas to collect and build up pressure.

  • In a well-ventilated location, let remaining dry ice melt and convert into gas.

8. Can dry ice be stored for three days?

If you use bigger blocks and a greater overall quantity of dry ice, it may last up to 2-3 days. During lengthy journeys, certain shipping firms can refill dry ice to keep your cargo cool.

9. Will dry ice in a cooler explode?

When dry ice “melts,” carbon dioxide gas is released, which may pile up within an airtight cooler and cause it to explode. When utilizing dry ice, users must follow certain use guidelines and safety measures.

10. How long would 1 kilogram of dry ice keep you warm?

Dry ice, on the other hand, is not food and should never be handled or eaten directly! So, how long does dry ice keep you cool? In a midsize cooler box, 810pcs of 1kg dry ice may last for around 24 hours.


The usage of dry ice has grown in popularity over time. Dry ice disposal, on the other hand, is difficult, but there are a few safe methods to go about it. When disposing of dry ice, there are a number of considerations to keep in mind in order to prevent any unpleasant situations. Dry ice is useful, but if not handled properly, it may cause cuts and injuries. Make sure dry ice is kept in an insulated or Styrofoam container when not in use. Make sure there’s plenty of airflows, and don’t store dry ice in sealed containers.

  • One of the simplest methods to dispose of dry ice is to use a Styrofoam cooler. These coolers, unlike ordinary sealed containers, include a layer of Styrofoam. Insulation is provided by Styrofoam.

  • Another simple method to dispose of dry ice is to put it in an area with plenty of air. The leftover dry ice will sublimate since it is compressed carbon dioxide.

  • Avoid flushing dry ice down the drain. It will continue to sublimate in the pipe, causing damage to your plumbing.