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Potassium Acetate

Potassium Acetate USP BP ACS Reagent Supplier, Manufacturer's Representative

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DESCRIPTION

Potassium Acetate

Specifications of Commercial Pure Potassium Acetate
CAS Number: 127-08-2
Appearance : white
Assay%: 99.0%-100.5%
pH of a 5% solution at 25C: 7.5-8.5
Aluminum(AI) %: ≤0.0001
Chloride(CI) %: ≤ 0.01
Heavy Metal(as Pb)%: ≤ 0.002
Iron(Fe) %: ≤  0.001
Loss on Drying(150C) %: ≤ 1.0

Potassium Acetate USP
C2H3KO2 98.14
Acetic acid, potassium salt. --- [CAS Number 127-08-2].
Potassium Acetate contains not less than 99.0 percent and not more than 100.5 percent of C2H3KO2, calculated on the dried basis.

Identification: A solution (1 in 10) responds to the tests for Potassium and for Acetate.
pH: between 7.5 and 8.5, in a solution (1 in 20).
Loss on drying: Dry it at 150 for 2 hours: it loses not more than 1.0% of its weight.
Heavy metals: the limit is 0.002%.
Limit of sodium: To pass the test not more than 0.03% of sodium is found.

Potassium Acetate BP
Formula: C2H3O2K
Weight: 98.14
CAS Number: 127-08-2

DEFINITION
Potassium acetate contains not less than 99.0 per cent and not more than the equivalent of 101.0 per cent of C2H3KO2, calculated with reference to the dried substance.

CHARACTERS
A white, crystalline powder or colourless crystals, deliquescent, very soluble in water, freely soluble in alcohol.

IDENTIFICATION
A. It gives reaction of acetates.
B. It gives reaction of potassium.

TESTS
Solution S: Dissolve 10.0 g in distilled water and dilute to 100 ml with the same solvent.
Appearance of solution: Solution S is clear and colourless.
pH: Dissolve 1.0 g in carbon dioxide-free water and dilute to 20 ml with the same solvent. The pH of the solution is 7.5 to 9.0.
Reducing substances: Dilute 10 ml of solution S to 100 ml with water. Add 5 ml of dilute sulphuric acid and 0.5 ml of a 0.32 g/l solution of potassium permanganate. Mix and boil gently for 5 min. The solution remains pink.
Chlorides: Dilute 2.5 ml of solution S to 15 ml with water. The solution complies with the limit test for chlorides (200 ppm).
Sulphates: Dilute 7.5 ml of solution S to 15 ml with distilled water. The solution complies with the limit test for sulphates (200 ppm).
Aluminium: If intended for use in the manufacture of peritoneal dialysis solutions, haemofiltration  solutions or hem dialysis solutions, it complies with the test for aluminium.  Dissolve 2.0 g in 50 ml of water and add 5 ml of acetate buffer solution pH 6.0.  The solution complies with the limit test for aluminium (1 ppm). Use as a reference  solution a mixture of 1 ml of aluminium standard solution (2 ppm Al), 5 ml of  acetate buffer solution pH 6.0 R and 49 ml of water. To prepare the blank use a mixture of 5 ml of acetate buffer solution pH 6.0 R and 50 ml of water.
Iron: Dilute 5 ml of solution S to 10 ml with water. The solution complies with the limit test for iron (20 ppm).
Heavy metals: Dissolve 5.0 g in water and dilute to 20 ml with the same solvent. 12 ml of the  solution complies with limit test A for heavy metals (4 ppm). Prepare the standard  using lead standard solution (1 ppm Pb).
Sodium: Not more than 0.5 per cent of Na, determined by atomic emission
Loss on drying: Not more than 3.0 per cent, determined on 1.000 g by drying in an oven at 100 °C to  105C.

Potassium Acetate ACS Analytical Reagent
Formula: CH3COOK
Weight: 98.14
CAS Number: 127-08-2

REQUIREMENTS
Assay: 99.0% CH3COOK
pH of a 5% solution: 6.5-9.0 at 25C

MAXIMUM ALLOWABLE
Insoluble matter: 0.005%
Chloride (Cl): 0.003%
Phosphate (PO4): 0.001%
Sulfate (SO4): 0.002%
Heavy metals (as Pb): 5 ppm
Iron (Fe): 5 ppm
Calcium (Ca): 0.005%
Magnesium (Mg): 0.002%
Sodium (Na): 0.03%

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