Sodium Acetate

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Sodium Acetate
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This is a solution of water and Sodium Acetate: a colourless salt with very interesting properties, not least that it is the main flavour ingredient in salt and vinegar crisps, listed as ingredient E262. It is used in extremely diverse applications for its acidic properties, such as in the tanning and dyeing industries as well as part of concrete and rubber production. It is fairly easy to make it at home with distilled vinegar and baking soda, for it is the sodium salt of acetic acid (the main component of vinegar). When dissolved in distilled water at a high concentration, the solution becomes ‘supersaturated’ and in this state is all set for a remarkable process to occur. If the liquid is triggered (either by a shock wave or the seeding it with a pre-existing crystal) the liquid transforms into a solid, with large crystals forming before your eyes. This reaction is exothermic and gives off heat, giving rise to the use of this material in re-usable commercial hand-warming pouches. To re-use them, all one needs to do is boil the pouch to melt the crystals and thus reinstate the super saturated solution.

Sample ID: 1011

Particularities

Chemical symbol
C2H3NaO2, (NaOAc)
State
Liquid
Compound
Selections
Categories
Mineral
Curiosities
Transformative
Relationships
Salt | Ice | Solution | Supersaturated | Hot | Acid | Crystalline | Flavour | Vinegar

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