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Potassium Iodide
CAS Number: 7681-11-0

Molecular Formula: KI
Molecular Weight: 166.00

Potassium Iodide Suppliers
Potassium Iodide

Potassium Iodide USP Grade Specifications
KI -- 166.00
Potassium iodide -- CAS 7681-11-0

Potassium Iodide contains not less than 99.0 percent and not more than 101.5 percent of KI, calculated on the dried basis.

Identification: A solution of it meets the requirements of the tests for Potassium and for Iodide.
Alkalinity: Dissolve 1.0 g in 10 mL of water, and add 0.1 mL of 0.1 N sulfuric acid and 1 drop of PhPh TS: no color is produced.
Loss on drying: Dry it at 105C for 4 hours: it loses not more than 1.0% of its weight.
Iodate: Dissolve 1.1 g in sufficient ammonia- and carbon dioxide-free water to obtain 10 mL of solution, and transfer to a color-comparison tube. Add 1 mL of starch and 0.25 mL of 1.0 N sulfuric acid, mix, and compare the color with that of a control containing, in a similar volume, 100 mg of Potassium Iodide, 1 mL of standard iodate solution [prepare by diluting 1 mL of potassium iodate solution (1 in 2500) with water to 100 mL], 1 mL of starch TS, and 0.25 mL of 1.0 N sulfuric acid. Any color produced in the solution of the test specimen does not exceed that in the control: not more than 4 µg per g is found.
Limit of nitrate, nitrite, and ammonia: To a solution of 1 g in 5 mL of water contained in a test tube of about 40-mL capacity add 5 mL of 1 N sodium hydroxide and about 200 mg of aluminum wire. Insert a pledget of purified cotton in the upper portion of the test tube, and place a piece of moistened red litmus paper over the mouth of the tube. Heat the test tube and its contents in a steam bath for 15 minutes: no blue coloration of the paper is discernible.
Thiosulfate and barium: Dissolve 0.5 g in 10 mL of ammonia- and carbon dioxide-free water, and add 2 drops of 2 N sulfuric acid: no turbidity develops within 1 minute.
Heavy metals: Dissolve 2.0 g in 25 mL of water: the limit is 0.001%.


Potassium Iodide FCC Food Grade Specifications
KI Formula weight 166.00
CAS 7681-11-0

DESCRIPTION
Potassium Iodide occurs as hexahedral crystals, either transparent and colorless or somewhat opaque and white, or as a white, granular powder. It is stable in dry air but slightly hygroscopic in moist air. One gram is soluble in 0.7 mL of water at 25C, in 0.5 mL of boiling water, in 2 mL of glycerin, and in 22 mL of alcohol.

REQUIREMENTS
Identification:
A. A 1:10 aqueous solution responds to the tests for Potassium and for Iodide.
B. The pH of a 1:20 aqueous solution is between 6 and 10.
Assay: Not less than 99.0% and not more than 101.5% of KI after drying.
Iodate: Not more than 4 mg/kg.
Lead: Not more than 4 mg/kg.
Loss on Drying: Not more than 1%.
Nitrate, Nitrite, and Ammonia: Passes test.
Thiosulfate and Barium: Passes test.


Potassium Iodide Analytical Reagent Grade Specifications
KI -- Formula Weight 166.00
CAS Number 7681-11-0

REQUIREMENTS
Assay: Minimum 99.0% KI
pH of a 5% solution: 6.0-9.2 at 25C

MAXIMUM ALLOWABLE
Insoluble matter: 0.005%
Loss on drying at 150C: 0.2%
Chloride and bromide (as Cl): 0.01%
Iodate (IO3): 3 ppm
Nitrogen compounds (as N): 0.001%
Phosphate (PO4): 0.001%
Sulfate (SO4): 0.005%
Barium (Ba): 0.002%
Heavy metals (as Pb): 5 ppm
Iron (Fe): 3 ppm
Calcium (Ca): 0.002%
Magnesium (Mg): 0.001%
Sodium (Na): 0.005%

We also supply Potassium Iodide BP Ph Eur Grade.

Please visit SDS Safety Data Sheet of Potassium Iodide Suppliers.

American Molecules, also known as ammol.org is a distributor, supplier and manufacturers' representative of all types of Pharmaceuticals, Functional Ingredients, Excipients and Specialty Chemicals in Texas USA. Our principals manufacture supply and export USP NF BP, Ph Eur, etc grades of chemicals pure and reagent grade, mineral fortifiers, FCC food grade. Tailor made particle size and customized specifications are offered. The principal's facility is having one or more of the certifications like FDA approval and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) for export to Europe is available. The manufacturers suppliers and exporters observe WHO Good Manufacturing Practices and Good Laboratory Practices.

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Suppliers and Manufacturers' Representative:
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