Potassium Acetate

Potassium acetate commercial pure powder and solution is used for de-icing, snow melting or thawing on air-port runway, concrete and bridges.

Potassium Acetate BP Grade Specifications

C2H3O2K -- 98.14 -- CAS 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 olutions 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 100C to 105C.

Potassium Acetate USP Grade

Potassium Acetate
C2H3KO2 98.14
Acetic acid, potassium salt.
Potassium acetate [CAS 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 Analytical Reagent Grade

CH3COOK
Formula 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%

Certifications :
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