Online Exporter big recharged hot water bag for Brasilia Manufacturer
Online Exporter big recharged hot water bag for Brasilia Manufacturer Detail:
Product detail pictures:
We thinks what buyers think, the urgency of urgency to act during the interests of a purchaser position of theory, allowing for much better high-quality, reduced processing costs, charges are more reasonable, won the new and outdated consumers the support and affirmation for Online Exporter big recharged hot water bag for Brasilia Manufacturer, The product will supply to all over the world, such as: venezuela , Botswana , Manchester , "Good quality, Good service " is always our tenet and credo. We take every effort to control the quality, package, labels etc and our QC will check every detail during producing and before shipment. We are willing to establish long business relationship with those who seek the high quality products and good service. We have set up a wide sales network across European countries, North of America, South of America, Middle East, Africa, East Asia countries.Please contact us now, you will find our professional experience and high quality grades will contribute to your business.
How to Make an Instant Cold Pack from Sodium Acetate.
We’ve proven that crystallizing sodium acetate “hot ice” actually gets warmer: http://www.youtube.com/watch?v=CAwxhAP9mnc
So the opposite should be true; if we dissolve it, it should get colder. We prove this in this video and show it cools down to about 9 Celsius in our experiments. This gives an “instant cold pack” effect very similar to the ones you find in store-bought instant cold packs. This is not as good as the store-bought packs, but it’s reusable.
To make it, simply make the hot ice like our other videos here: http://www.youtube.com/watch?v=21IcpkxgBVY
Crystallize the hot-ice and let the solid sodium acetate trihydrate cool down to room temperature. Then store it in an air-tight container.
To initiate cooling, just add an equal amount of water.
You have to make the hot ice before you can make the cold pack. Using raw sodium acetate bought online won’t work because it’s dried out. Creating hot-ice introduces the right amount of water needed for this experiment.
You also can’t let your freshly made hot ice dry out. Nor can you let it evaporate to make sodium acetate powder, it has to be hot ice for this to work.
Two competing effects occur during solvation. The exothermic effect of the water molecules interacting with the ions of sodium and acetate. And the endothermic effect of breaking up the interactions of ions. By using sodium acetate trihydrate at room temperature, you’ve already gotten rid of some of the exothermic interactions. But the endothermic ones remain. If you used anhydrous sodium acetate, the exothermic interactions roughly cancel out the endothermic ones.
Thanks for watching
Subscribe, Rate and Comment!