Handwarmers are useful for treating mild-moderate aches, joint pain, cramps, and stomach pain. My handmade handwarmers can be reused, by boiling the bag until completely dissolved (30-40 seconds) and slowly cooling it. Because of its many uses, instead of throwing the used handwarmers in the trash, it can be used to clean out rust, scales, and stains on metal surfaces, it can be poured out on to the concrete, sealing it, preventing water damage, it can be used to lightly season your potato chips, it is used for preserving food as well, because it prevents bacteria growth. Sodium Acetate has other industrial uses, such as textiles (as a photoresist), in the laboratory to study molecular biology and biochemistry, and as a buffer, when acetic acid (ex. vinegar) is added, to balance a mildly acidic pH level.
I made a jacket with scented, salt based handwarmers. They are scented with essential oils, which can be chosen between peppermint or chamomile. The handwarmers are stored in cotton/polyester pouches, for better insulation. There are separate pockets in the jacket; one for the handwarmers, and one for anything else. I sewed the zipper, buttons, thumb holes, pockets, ribbon, and fabrics all by hand, as well as painting the back.
Here, ingredients from miss vickie’s chips conatin sodium acetate. (Yes, I ate them)
Active ingredient: Sodium Acetate
Molecular formula: CH3COONa, abbreviation NaOAc
2D structure:
3D structure:
The salt that makes the handwarmers hot is a solution called sodium acetate, also known as hot ice. The substance that triggers the exothermic reaction is the sodium acetate trihydrate crystals. When the crystals are melted at a point of 58-58.4 Degrees Celsius, they dissolve into their water of crystallization. If the solution is cooled down, it is now a supersaturated solution. To activate crystallization, add a speck of sodium acetate trihydrate into the supersaturated solution, and doing so, a process called nucleation occurs. A small number of molecules form a pattern of the crystalline solid, continuing to grow until it has filled the mold of the place it is stored.
These are the materials I began with to create the jacket. Most were thrifted, or accessories I already had.
These are the materials I started with to create the sodium acetate for my handwarmers, which I purchased from the grocery store.
I sewed the back cloth on, and some ribbon around the borders to make the logo pop.
I sewed another pair of pockets, and added a little decoration, then cut out some thumb holes and buttons.
I decided to sew a pouch from some spare fabric (cotton x polyester) to insulate the handwarmers better, and for a soft texture. Then, I added a zipper as convenience.