Potassium Citrate Monohydrate Anhydrous Specifications of Commercial Pure & BP Ph Eur USP IP FCC Food Grade & Micro Encapsulated Potassium Citrate Manufacturers & Exporters
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Potassium Citrate Monohydrate CAS Number 6100-05-6
Potassium Citrate Anhydrous CAS Number 866-84-2
Micro Encapsulated Potassium Citrate
Potassium Citrate USP Grade Specifications:
C6H5K3O7-H2O --- 324.41
C6H5K3O7 --- 306.40
1,2,3-Propanetricarboxylic acid, 2-hydroxy-, tripotassium salt, monohydrate;
Tripotassium citrate monohydrate CAS 6100-05-6
Potassium Citrate Anhydrous CAS 866-84-2.
DEFINITION
Potassium Citrate contains NLT 99.0% and NMT 100.5% of potassium citrate (C6H5K3O7), calculated on the dried basis.
IDENTIFICATION
A. Identification Tests: General, Potassium and Citrate: A 100-mg/mL solution meets the requirements.
Tartrate:
Sample: 1 g of Potassium Citrate
Analysis: Dissolve the Sample in 1.5 mL of water in a test tube, add 1 mL of 6 N acetic acid, and scratch the walls of the test tube with a glass rod.
Acceptance criteria: No crystalline precipitate is formed.
Alkalinity:
Sample solution: Dissolve 1 g of Potassium Citrate in 20 mL of water.
Analysis: To the Sample solution add 0.20 mL of 0.10 N sulfuric acid, and add 1 drop of phenolphthalein.
Acceptance criteria: The Sample solution is alkaline to litmus. No pink color is produced after the addition of phenolphthalein.
Loss on Drying: Dry a sample at 180C for 4 h: it loses 3.0% to 6.0% of its weight.
Packaging and Storage: Preserve in tight containers.
Potassium Citrate BP Ph Eur Grade Specifications
C6H5K3O7-H2O -- 324.4 -- CAS 6100-05-6
DEFINITION
Potassium citrate contains not less than 99.0 per cent and not more than the equivalent of 101.0 per cent of tripotassium 2-hydroxypropane-1,2,3-tricarboxylate, calculated with reference to the anhydrous substance.
CHARACTERS
A white, granular powder or transparent crystals, hygroscopic, very soluble in water, practically insoluble in alcohol.
IDENTIFICATION
A. To 1 ml of solution S (see Tests) add 4 ml of water. The solution gives the reaction of citrates.
B. 0.5 ml of solution S gives reaction of potassium.
TESTS
Solution S: Dissolve 10.0 g in carbon dioxide-free water prepared from distilled water and dilute to 100 ml with the same solvent.
Appearance of solution: Solution S is clear and colourless.
Acidity or alkalinity: To 10 ml of solution S add 0.1 ml of PhPh solution. Not more than 0.2 ml of 0.1 M hydrochloric acid or 0.1 M sodium hydroxide is required to change the colour of the indicator.
Readily carbonizable substances: To 0.20 g of the powdered substance to be examined add 10 ml of sulphuric acid and heat in a water-bath at 90 ± 1C for 60 min. Cool rapidly. The solution is not more intensely coloured than reference solution.
Chlorides: Dilute 10 ml of solution S to 15 ml with water. The solution complies with the limit test for chlorides (50 ppm).
Oxalates: Dissolve 0.50 g in 4 ml of water, add 3 ml of hydrochloric acid and 1 g of granulated zinc and heat on a water-bath for 1 min. Allow to stand for 2 min, decant the liquid into a test-tube containing 0.25 ml of a 10 g/l solution of phenylhydrazine hydrochloride and heat to boiling. Cool rapidly, transfer to a graduated cylinder and add an equal volume of hydrochloric acid and 0.25 ml of potassium ferricyanide solution. Shake and allow to stand for 30 min. Any pink colour in the solution is not more intense than that in a standard prepared at the same time and in the same manner using 4 ml of a 0.05 g/l solution of oxalic acid (300 ppm).
Sulphates: To 10 ml of solution S add 2 ml of hydrochloric acid and dilute to 15 ml with distilled water. The solution complies with the limit test for sulphates (150 ppm).
Heavy metals: 12 ml of solution S complies with limit test A for heavy metals (10 ppm).
Sodium: Not more than 0.3 per cent of Na, determined by atomic emission spectrometry.
Water: 4.0 per cent to 7.0 per cent, determined on 0.500 g by the semi-micro determination of water. After adding the substance to be examined, stir for 15 min before titrating.
Specifications of Potassium Citrate IP Grade
Potassium citrate IP grade is also offered.
Specifications of Potassium Citrate FCC Food Grade
Tripotassium Citrate
KOOCCH2C(OH)(COOK)CH2COOK-H2O
C6H5K3O7-H2O Formula weightt 324.41
INS: 332(ii) CAS: 6100-05-6
DESCRIPTION
Potassium Citrate occurs as transparent crystals or as a white, granular powder. It is deliquescent when exposed to moist air. One gram dissolves in about 0.5 mL of water. It is almost insoluble in alcohol.
Function: Buffer; sequestrant; stabilizer.
REQUIREMENTS
Identification: A 1:20 aqueous solution gives positive tests for Potassium and for Citrate.
Assay: Not less than 99.0% and not more than 100.5% of C6H5K3O7 after drying.
Alkalinity: A 1:20 aqueous solution is alkaline to litmus, but after the addition of 0.2 mL of 0.1 N sulfuric acid to 10 mL of this solution, no pink color appears after the addition of 1 drop of PhPh.
Lead: Not more than 2 mg/kg.
Loss on Drying: Between 3.0% and 6.0%.
We manufacture and supply Micro Encapsulated Potassium Citrate. The core consists of pure grade of 80% Potassium Citrate and the coating will be of 20% vegetable oil wax or polymer. Encapsulation makes the core material slow release or extended release.
SDS MSDS of Potassium Citrate Monohydrate Anhydrous BP Ph Eur EP JP USP NF IP ACS Analytical Reagent FCC Food grade & Micro Encapsulated Potassium Citrate Manufacturers |
