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What is in instant cold packs?

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2011-03-15 19:27:33
2011-03-15 19:27:33

Ammonium Nitrate and water.

Urea + plus a Non-Toxic Cooling Additive and Water providing a safer alternative to the dangerous Ammonium Nitrate

*Ammonium Nitrate is highly dangerous and used as an oxidizing agent in explosives.

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inside most instant cold packs


endothermic absorbs energy from the surrounding environment -think instant cold packs. Exothermic gives off energy to the surrounding environment - think instant hot packs.


they react together to become very cold that's why its used in instant cold packs.


According to the msds it should, if you can see 2640 written on it anywhere.


There's an ampule inside them. Bend until you can hear the ampule break, then shake them to start the chemical indothermic reaction.


Examples include Urea [CO(NH2)2], Potassium Nitrate [KNO3] and Ammonium Nitrate [NH4NO3]. All are commonly found in "Instant cold packs" that become cold when you rupture the inner bag by depressing the pack gently but firmly. When then inner water makes contact with the chemicals listed above inside the outer bag of the pack, the endothermic reaction begins. This is the source of the cold temperature these types of Instant Cold Packs produce.



Cold packs were invented 25 years ago by Cardinal Health.


Yes, the compound in the packs is a supersaturated solution of sodium acetate.


Technically no they don't. However the chemicals can break down and the packaging can deteriorate. I would replace them every couple of years.


The first of the instant cold packs was a liquid-type invented by Albert A. Robbins and patented August 11, 1959. Robbins' "Chemical Freezing Package" involved and outer pouch containing two separate compartments for water and ammonium nitrate that would mix and freeze when the user split a perforation between the two - say by hitting or snapping the package as we would with the modern variety. Robbins' patent was assigned to Kwik-Kold of America. Parent company Cardinal Health continues to market this, and the more recently invented gel-type cold packs, to this day.


Cold packs and ice bags are placed on a localized site and provide topical relief


the ammonium nitrate used in most common ice packs retains cold temperatures


Energy (in the form of heat) is absorbed from the environment during endothermic reactions. Instant cold packs, for example, become cold when the ammonium nitrate and water are mixed. As the chemical reaction takes place, it absorbs heat, which is why the pack feels cold.


Instant cold packs consist of two substances that are kept separate until they need to mix. In most cases they consist of some salt, such as ammonium nitrate, contained in an outer bag with water in an inner bag. Squeezing the pack breaks the inner bag, releasing the water, which dissolves the ammonium nitrate. This process absorbs heat, making the pack cold.


The formula of ammonium nitrate is NH4NO3. By the way, to make ammonium nitrate, add nitric acid to ammonia. Ammonium nitrate is used commercially in instant cold packs.


Yes, hot packs have exothermic reactions (the contents create heat) and cold packs have endothermic reactions (they require heat to occur, therefore making the surroundings colder). In hot packs its a reaction between water and a salt solution, and in cold packs its normally water and ammonium nitrate. peeace


Ice packs keeps lunches cold.


That is an ENDOTHERMIC reaction. It absorbs heat, rather than giving off heat. The instant cold packs in first aid kits use this property- they contain ammonium nitrate and water- which get cold when combined.


if you can see the lable for it then it is


You can find "Instant Fusion" in Cyberdark Impact and Champion Pack Game 7.


Instant hot and cold packs are used by athletes to quickly and conveniently treat an injury. They last for about 20 minutes. The packs take advantage of chemicals that either absorb a lot of heat or release a lot of heat when dissolved in water. When a chemical process absorbs a lot of heat it is called endothermic. When heat is released, it is called exothermic. In cold packs, ammonium nitrate is used because it absorbs a lot of heat when it dissolves in water. The water and ammonium nitrate are in separate compartments in the pack. When the cold pack is needed, the chambers are broken and the ammonium nitrate dissolves in the water, absorbing heat and making the pack as cold as 0C. In hot packs, calcium chloride or magnesium sulphate are used, along with the water. They release heat when the chambers are broken and the chemical dissolves in the water. A hot pack can reach a temperature of 90C. :)


No, they release energy.


When ammonium nitrate (NH4NO3) is mixed with water, the dissolution of ammonium nitrate occurs - that is, it is broken up into its ions. This is endothermic, and is the driving reaction behind instant cold packs.


Cold packs are recommended within the first 48 hours after back pain begins, with use of hot packs subsequently.



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