CAS No. 24634-61-5

Batch: Purity:99.45
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Potassium sorbate Chemical Structure
Chemical Structure
Check the Potassium sorbate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name potassium (2E,4E)-hexa-2,4-dienoate
CAS Number 24634-61-5
Molecular Formula

C6H7KO2
Molecular Weight (MW) 150.22
SMILES [K+].C/C=C/C=C/C([O-])=O
InChIKey CHHHXKFHOYLYRE-STWYSWDKSA-M

Biological Activity

Potassium sorbate is a food preservative and antimicrobial agent isolated from Sorbus aucuparia. It functions as an inhibitor of various molds, yeasts, and select bacteria. By disrupting cellular membrane integrity and inhibiting essential intracellular enzyme systems, potassium sorbate compromises nutrient transport and cell metabolism. These cellular disruptions suppress microbial growth and inhibit spore germination, providing effective antimicrobial preservation across diverse biological and food science applications.

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
Water 30 mg/mL
Ethanol 15 mg/mL
DMSO Insoluble
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

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Note: Technical data last updated: Sep 1, 2026.