Potassium Citrate Commercial Pure & BP USP FCC Food grade Manufacturers |
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MSDS of Potassium Citrate BP USP IP FCC Food grade Manufacturers
Potassium Citrate
Technical & Pure.
Also IP BP Ph. Eur. USP ACS AR LR FCC Food Grades
Specifications of Potassium Citrate BP Ph Eur
C6H5K3O7,H2O -- 324.4 -- 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
phenolphthalein 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 ± 1 °C for 60 min. Cool rapidly. The solution is not
more intensely colored 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.
Potassium Citrate USP
Potassium Citrate
C6H5K3O7·H2O 324.41
1,2,3-Propanetricarboxylic acid, 2-hydroxy-,
tripotassium salt, monohydrate.
Tripotassium citrate monohydrate [6100-05-6]
Anhydrous 306.40 [866-84-2]
Potassium Citrate contains not less than 99.0 percent and not more than 100.5 percent of C6H5K3O7, calculated on the dried basis.
Identification—
A solution (1 in 10)
responds to the tests for Potassium and for Citrate.
Alkalinity— A solution of 1.0 g in 20
mL of water is alkaline to litmus, but after the addition of 0.20
mL of 0.10 N sulfuric acid, no pink color is
produced by the addition of 1 drop of phenolphthalein TS.
Loss on drying— Dry it at 180 for 4 hours: it loses between 3.0%
and 6.0% of its weight.
Tartrate—
To a solution of 1 g
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: no crystalline
precipitate is formed.
Heavy metals— Dissolve 2 g in 25 mL
of water, and proceed as directed for Test Preparation, except to
use glacial acetic acid to adjust the pH: the limit is 0.001%.
Potassium Citrate FCC
Tripotassium Citrate
KOOCCH2C(OH)(COOK)CH2COOK·H2O
C6H5K3O7·H2O Formula wt 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 phenolphthalein TS.
Lead: Not more than 2 mg/kg.
Loss on Drying: Between 3.0% and 6.0%.
Potassium Citrate BP USP IP FCC Food Grade Manufacturers:
Muby Chem Ltd.
Toll manufacturing & Warehouse at Houston & Midland, Texas, USA and India
USA, Canada, Mexico Customers may e-mail: usa@mubygroup.com
Call 1-844-682-9243
Europe Africa Asia India Mumbai e-mail: info@mubygroup.com
Call +91-22-23774610
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