Product Name

Potassium Sorbate

CAS No.

590-00-1/24634-61-5

Molecular Formula

C₆H₇KO₂

Molecular Weight

150.22

Quality Standard

FCC IX

Packing

In 25kgs carton

Shelf Life

2 years, Keep in cool and dry place

Item

Specification

Appearance

White to off- white granular

Odor

Slight characteristic odor

Solubility

Freely soluble in water and practically insoluble in ether

Heat Stability

No change in color after heating for 90 min at 105 ℃

Identification Test

(1) Potassium test: Passes Test

(2) Test of double bonds:Passes Test

(3) UV: conforms with standard spectrum

(4) Melting point:133.0～135.0 ℃

Assay（on dry weight basis)

99%～101.0%

pH-Value(10% water solution)

8.5-10.5

Transmittance

≥90.0%

Clarify

Passes Test

Organic Volatile Impurities

Meet the requirement

Acidity(As sorbic acid )

≤1%

Alkalinity(as K2CO3)

≤1%

Chloride(as Cl)

≤0.018%

Sulfate(as SO4)

≤0.038%

Loss On Drying

≤1.0 %

Aldehydes(as formaldehyde)

≤0.1%

Arsenic (as As)

≤3mg/kg

Lead

≤2mg/kg

Zinc

≤0.1mg/kg

Cadmium

≤0.02mg/kg

Mercury

≤1mg/kg

Heavy Metals(as Pb)

≤10mg/kg

Total Count Colony

≤100cfu/g

Mould&Yeast

≤100cfu/g

Coliform

≤30cfu/g