Potassium Sorbate BP

Potassium sorbate is the potassium salt of sorbic acid. It is a white salt that is very soluble in water (58.2% at 20 °C).


It is primarily used as a food preservative (E number 202). Potassium sorbate is used to inhibit molds and yeasts in many foods, such as cheese, wine, yogurt, dried meats, apple cider, rehydrated fruits, soft drinks and fruit drinks, and baked goods. It acts as a wine stabilizer.


Chemical Name: Potassium Sorbate
Mol. Formula: C6H7KO2
Mol. Weight:  150.2 g/mol
CAS no.: 590-00-1



Test Specification
Characters It occurs as white or almost white powder or granules.






(a) Ultraviolet and visible absorption spectrophotometry

(b) Infrared absorption spectrophotometry

(c) Specified Test. The residue obtained melts at 132 °C to 136 °C.

(d) Specified Test. The solution gives reaction of Potassium.

Solubility Very soluble in water, slightly soluble in ethanol (96%)
Appearance of solution Solution is clear and not more intensely colored than reference solution Y5.
Acidity or alkalinity Specified Test.
Aldehydes Not more than 0.15%, expressed as C2H4O.
Loss on drying Not more than 1.0%
Heavy Metals Not more than 10 ppm
Assay Not less than 99.0% and not more than 101.0% (dried substance).


Shelf life, Storage and Packing

It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.


GLP, cGMP (FDA) Approved, ISO 9001, ISO 14001, ISO 45001, ISO 17025, ISO 22000, FSSC 22000, FSSAI, Halal and Kosher certified.
We observe WHO Good manufacturing practice and Good laboratory practice.

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