Who invented instant cold packs

In hot packs its a reaction between water and a salt solution, and in cold packs its normally water and ammonium nitrate. 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. 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. Log in. Decade - s. Study now. See Answer. Best Answer. Study guides. Scientists 20 cards. How has technology changed farming. Who is considered the father of modern art criticism. Which is an example of matter cycling through the bodies of living things. Which is an example of a recent development used to address food shortages in urban areas.

Poetry 20 cards. What is one of the key features of blank verse. Why did 20th-century psychologists study the subconscious. Which is the best example of stream of consciousness writing.

Kiteboarding 2 cards. What size kite do you use in 15 knots of wind. When was kiteboarding invented. Q: Who invented instant cold packs? Write your answer Related questions. Who invented cold packs?

Where can you find ammonium nirate? What happens when you mix ammonium nitrate and water togather? What are some retailers that sell cold packs? What happens to the reaction during endothermic and exothermic reaction? Does nexcare instant cold packs have amonia nitrate? Who invented instant noodle? Why can't you refreeze instant cold packs? What's going on here?

The liquid inside the cold pack is water. In the water is another plastic bag or tube containing ammonium-nitrate fertilizer. When you hit the cold pack, it breaks the tube so that the water mixes with the fertilizer. This mixture creates an endothermic reaction -- it absorbs heat. The temperature of the solution falls to about 35 F for 10 to 15 minutes. Sign up for our Newsletter! Mobile Newsletter banner close. They became the only automated instant cold pack, ice pack heating pad and hot pack company in the world and soon produced in excess of 10,, packs per year.

Another industry first. These products had now become universal. They were being used by the military, hospitals, clinics, MD offices, ambulances, schools, industrial plants, police officers, sports arenas, boy scouts, girl scouts, moms and dads etc. They were being distributed in great volumes internationally.