Potassium sorbate

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Potassium sorbate
Names
IUPAC name
Potassium (2E,4E)-hexa-2,4-dienoate
Other names
E202
Potassium (E,E)-sorbate
Sorbistat potassium
Sorbistat-K
Properties
C6H7KO2
CH3CH=CH−CH=CH−CO2K
Molar mass 150.22 g/mol
Appearance White solid
Odor Odorless
Density 1.363 g/cm3 (20 °C)
Melting point 270 °C (518 °F; 543 K)
Boiling point Decomposes
58.5 g/100 ml (100 °C)
Solubility Soluble in ethanol, methanol, propylene glycol
Slightly soluble in acetone
Very slightly soluble in chloroform, corn oil, diethyl ether
Insoluble in benzene, toluene, xylene
Vapor pressure ~0 mmHg
Hazards
Safety data sheet Sigma-Aldrich
Lethal dose or concentration (LD, LC):
4,340 mg/kg (rat, oral)
Related compounds
Related compounds
Sorbic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Potassium sorbate is the potassium salt of sorbic acid, with the chemical formula CH3CH=CH−CH=CH−CO2K.

Properties

Chemical

Addition of a strong acid will form sorbic acid.

Physical

Potassium sorbate is a white solid, soluble in water.

Availability

Potassium sorbate can be bought from winemaking suppliers. Can also be purchased online.

Preparation

Potassium sorbate is easily produced by neutralizing sorbic acid with potassium hydroxide.

Projects

Handling

Safety

Potassium sorbate is non-toxic and safe to handle.

Storage

In closed plastic or glass bottles.

Disposal

Potassium sorbate doesn't require special disposal. Discard it as you wish.

References

Relevant Sciencemadness threads