Sodium acetate is a kind of organic matter. Sodium acetate trihydrate is white crystal with a relative density of 1.45 and a melting point of 58℃. It is weathered in dry air, loses its crystalline water at 120℃ and decomposes at higher temperature. Anhydrous sodium acetate is colorless transparent crystal, melting point 324℃. Soluble in water.

Physical Properties of Sodium Acetate

Appearance:

Sodium acetate typically appears as a white, crystalline solid or powder.

Solubility:

It is highly soluble in water, with a solubility of approximately 1 g in 1.5 mL of water at room temperature. It is less soluble in ethanol and insoluble in ether.

Melting Point:

The melting point of sodium acetate is around 58 °C (136.4 °F). The trihydrate form has a higher melting point due to the presence of water molecules.

Density:

The density of sodium acetate is about 1.5 g/cm³.

Taste:

It has a mildly salty flavor, which is why it is sometimes used in food applications.

Chemical Properties of Sodium Acetate

pH:

An aqueous solution of sodium acetate has a pH of around 7.0, making it neutral.

Buffering Capacity:

Sodium acetate is commonly used as a buffering agent in biochemical applications due to its ability to maintain a stable pH when mixed with acetic acid.

Reactivity:

Sodium acetate can react with strong acids to produce acetic acid and the corresponding salt. It can also react with strong bases to form sodium hydroxide and other products.

Dehydration:

When heated, sodium acetate can lose water and form anhydrous sodium acetate, which can further decompose at higher temperatures.

Thermal Properties:

Sodium acetate has a unique property known as supercooling, where it can remain liquid below its melting point. Upon disturbance, it crystallizes rapidly, releasing heat in an exothermic reaction.