Uses of dry ice The main uses of dry ice are

1, eat dry ice, add dry ice to wine, cocktails or drinks, it's cold and delicious, and the glass is smoking, which is particularly interesting.

2. Dry ice can also be used as a cold storage preservative. Dry ice volatilizes into dry carbon dioxide gas after gasification, which has the function of oxygen isolation and corrosion prevention, so it can keep food from deteriorating for a long time.

3, industrial grade dry ice, can be used to clean the mold.

4. Dry ice is widely used in stage, theater, film and television, weddings, celebrations and party effects.

5. For planting flowers and vegetables in greenhouses, carbon dioxide fertilizer can be applied and dry ice can be used to achieve regular and quantitative fertilization.

6. Dry ice is often used to put out fires. Because dry ice is the solid form of carbon dioxide, it can be put into a fire extinguisher to achieve the purpose of extinguishing fire through the flame retardant characteristics of carbon dioxide.

7. Dry ice can remove all kinds of oil base, varnish, ink and fuel. Avoid discharging dangerous substances and solutions.

8. Dry ice can remove residues, gelatinous substances and oil stains from baking in the oven, as well as the mixture of fresh products before baking.

9. Dry ice is also used for long-distance and short-distance transportation of electronic cryogenic materials and small components.

10. The function of dry ice in medical treatment is to transport vaccines and other special drugs at low temperature.

What is dry ice?

Dry ice is solid carbon dioxide, which is made by liquefying carbon dioxide into colorless liquid under the pressure of 6250.5498kPa and then rapidly solidifying under low pressure. Now dry ice has been widely used in many fields.

The history of dry ice can be traced back to 1823 Faraday and Derby in England. They liquefied carbon dioxide for the first time, and then Chirolet of Germany successfully produced solid carbon dioxide at 1834. But it was only used for research at that time and was not widely used.

Characteristics of dry ice

Carbon dioxide is invisible. It's not smoke, it's fog. When carbon dioxide changes from solid to gas, it absorbs a lot of heat, which makes the temperature of the surrounding air drop rapidly, and the air temperature drops accordingly. Its solubility in water vapor becomes smaller, and the water vapor liquefies, giving off heat and becoming small water droplets, which is fog. This is the same as the "white fog" of popsicles in summer. It's all water droplets, not other gaseous substances.

That is, we see white fog instead of white smoke.

The temperature of dry ice is much lower than that of water, so it is equivalent to heating dry ice, which absorbs heat and sublimates, reducing the temperature of water and even freezing it.

Matters needing attention in dry ice

Safe contact

Remember, every time you touch dry ice, you must be careful to touch it with thick cotton gloves or other shelter. If it is in direct contact with the skin for a long time, it may cause cell freezing and similar slight or extremely serious frostbite damage. Dry ice cannot be used in sealed places such as cars and cabins, because the sublimated carbon dioxide will be denser than oxygen, so it will squeeze out oxygen, which may lead to shortness of breath or even suffocation.

1. Never let children touch dry ice alone.

The temperature of dry ice is extremely low, please don't put it in your mouth to prevent frostbite.

3, take dry ice must use thick cotton gloves, clips and other shelter.

Please use dry ice in a well-ventilated place and avoid in a closed space with dry ice.

5. Dry ice cannot be mixed with liquid.

6, can't put dry ice in a completely sealed container, otherwise it may explode!

7. If you want to keep dry ice, please put it in a breathable incubator.

Tip: Use dry ice correctly and safely to avoid injury.

keep

Put dry ice in an incubator: an incubator with good insulation effect can slow down the sublimation of dry ice. Because the pressure generated by sublimation of dry ice will cause explosion, it is not allowed to store dry ice in a closed incubator.