What chemical reactions can be refrigerated and which ones can be refrigerated? The more the merrier

Ammonium nitrate dissolves in water and can be refrigerated.

All chemical reactions that occur near room temperature can be refrigerated.

Ice salt refrigeration – sprinkling salt on top of the ice cubes.

The chemical fertilizer urea CO(NH2)2 can be quickly cooled, urea is easy to obtain, and its solution can be sprinkled on grass or under trees after use as fertilizer to be absorbed, without polluting the environment. Usage: Put the items that need to be cooled, such as beer and drinks, into a plastic bucket, add water to the bucket, the amount of water is best not over the items, add an appropriate amount of urea to the water, and the items will be cooled quickly.

Ammonium chloride solids react with barium hydroxide solids to refrigerate (be careful with this, it will freeze quickly).

Ammonium nitrate dissolves in water and can be refrigerated.

Ba(OH)2 and NH4Cl absorb a lot of heat by their reactions. No BA(OH)2 is available for CA(OH)2.

Hydrated lime and ammonium chloride (fertilizer) are both easy to find ......

ba(oh)2·8h2o+2nh4cl=bacl+2nh3·h2o＋8h2o

Easy to carry and mild in condition.

FeSO4+2Nach3CoO=Fe(OH)2+2CH3CoOH+Na2SO4 and other hydrolysis reactions.

Chemical preparations: Freon, can be recycled and refrigerated; However, there is always a day when the air conditioner and refrigerator run out, so you still have to add it when you use it! Take a look at the following: ammonia is toxic and circulates once leaked.

The ammonium chloride and barium hydroxide reaction can be quickly cooled, but in real life, it should be noted that this reaction produces ammonia gas, so it needs to be sealed.

Ammonium chloride solids react with barium hydroxide solids to refrigerate (be careful with this, it will freeze quickly).

Ammonium nitrate dissolves in water and can be refrigerated.

Ice salt baths can bring the temperature to a negative value, which is also relatively fast. Even if you sprinkle NaCl in ice, you can also use the usual table salt.

1. With ice cubes (no chemical reaction).

2. Potassium nitrate (dissolved in water, the hydration process is greater than the dissolution process, so the solution will be cold).

Ice salt baths. Ice cubes with calcium chloride, sodium chloride or anything can reduce the temperature to minus a few degrees.

Or you can use difluoroethane spray cans, which are non-toxic, rely on vaporization to absorb heat and refrigerate, and are also very easy to use.

There are still many substances that can meet the requirements of the topic. It depends on what the specific conditions you mentioned, what it is used for, and how cheap it is, and how non-toxic and harmless it is.

It should be noted that the chemical reactions that can produce a large amount of gas are violent reactions, and most of them are theoretically flammable and explosive, and can be used as bombs. It's dangerous. People who are not familiar with chemistry should not try it lightly, especially at home.

Ammonium nitrate can be dissolved in water.

Table salt and ice. But when the ice melts, it is no longer cooled.

I don't know for 1-2 years.

Ice, water. Liquid nitrogen, but that's not very safe.

Dry ice can.