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866-84-2 Usage


Potassium citrate is a potassium salt of citric acid with the molecular formula C6H5K3O7. It is a white, slightly hygroscopic crystalline powder that is odorless with a saline taste. As a food additive, potassium citrate is used to regulate acidity and is known as E number E332. Medicinally, it may be used to control kidney stones derived from either uric acid or cystine.


Used in Food Industry:
Potassium citrate is used as a preservative, stabilizing and pH buffering agent, and for other purposes. It helps regulate acidity and maintain the product's pH constant, ensuring product stability and quality.
Used in Pharmaceutical Industry:
Potassium citrate is used as a buffering agent, chelating agent, flavoring agent, stabilizer, antioxidant, and emulsifying salt. It is an effective way to treat/manage gout and arrhythmia, if the patient is hypokalemic. It is widely used to treat urinary calculi (kidney stones) and is often used by patients with cystinuria.
Used in Veterinary Medicine:
Potassium citrate is used as a non-irritating diuretic in dogs and cats, helping to reduce the pain and frequency of urination caused by highly acidic urine.
Industrial Uses:
In the United Kingdom, potassium citrate is used as an over-the-counter drug for the relief from discomfort experienced in mild urinary-tract infections by increasing the urinary pH. However, caution is advised for patients with renal impairment, cardiac problems, and the elderly, as well as those with raised blood pressure or diabetes, who should consult their general practitioner before taking potassium citrate.

Potassium citrate

The applications of potassium citrate (or tripotassium citrate) mainly derive from its alkaline properties. It is used to treat kidney stones composed of uric acid and cysteine, as well as other renal failures caused by excess acidity, including in veterinary applications. As an additive to soft drinks and other edibles, it also functions as an acid buffer, less bitter than other potassium salts, and with less sodium than trisodium citrate. An additional use of potassium citrate is to supplement potassium in patients with hypokalemia, preventing and treating gout and arrhythmia.

Prevention of urinary calculi drug

Potassium citrate is the drug which is most commonly used to prevent calculus. It was found that in the urine pH value and citric acid value and have a very close relationship with the formation urinary tract calculus. In an acidic urine (pH <5.5), the uric acid solubility is very low, so it is likely to cause uric acid calculus; while in alkaline urine (pH> 7), it is easy to form calcium or magnesium phosphate calculus. 63% of urinary calculus patients are below normal urine citrate, and potassium citrate can provide a lot of citric acid to enhance the urine pH value. So for uric acid calculus, It has a very significant therapeutic effect to low calcium citrate calculus disease and tubular poisoning calcium calculus disease. But It will raise the concentration of potassium and lower the concentration of ammonium ion in urinary, which is because not only complements the citric acid, but also supplements of potassium. Since potassium metabolism is very quickly in the body, there is no change in blood potassium concentration. It has little effect on the body. The daily amount of total urine, oxalate, phosphate, sodium, magnesium, sulfate and uric acid and other aspects test from patients with uric acid calculus, it is found that it is not affected by taking potassium citrate.

Production methods

Citric acid and potassium hydroxide or potassium bicarbonate derived products. C6H8O7 + 3KHCO3 → CaH5K3O7 · H2O + 3CO2 ↑ + 2H2O


https://en.wikipedia.org/wiki/Potassium_citrate https://kidneystones.uchicago.edu/how-citrate-gets-into-the-urine/ https://www.drugbank.ca/drugs/DB09125 http://www.urocit-k.com/ http://www.jungbunzlauer.com/en/products/special-salts/tripotassium-citrate.html https://www.quora.com/Why-is-potassium-citrate-buffer-is-an-acid-buffer

Production Methods

Potassium citrate is produced by adding potassium bicarbonate or potassium carbonate to a solution of citric acid until effervescence ceases, filtering the solution and evaporating to granulation.

Flammability and Explosibility


Safety Profile

Poison by intravenous route. When heated to decomposition it emits toxic fumes of K2O.


Potassium citrate is usually administered by mouth in dilute aqueous solution. This is because of its somewhat caustic effect on the stomach lining, and the potential for other mild health hazards. In states where non-prescription potassium citrate is legal, the maximum allowable over-the-counter (OTC) dose for elemental potassium is regulated by the FDA to be no more than 100 mg (approximately 3 % of the daily allowance ) . Pure potassium citrate contains 38.28 % potassium.

Check Digit Verification of cas no

The CAS Registry Mumber 866-84-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,6 and 6 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 866-84:
102 % 10 = 2
So 866-84-2 is a valid CAS Registry Number.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017


1.1 GHS Product identifier

Product name Potassium citrate

1.2 Other means of identification

Product number -
Other names seltz-k

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:866-84-2 SDS

866-84-2Upstream product

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866-84-2Relevant articles and documents

Method of manufacturing a granular mineral composition


Page/Page column 12, (2008/06/13)

A method for forming mineral granules can be accomplished with a granulation reaction of edible acids and mineral bases to form mineral salts. The reaction is carried out in a manner that produces granules without requiring a binder or requiring the use o

Effervescent composition and tablet made there from


, (2008/06/13)

The present invention relates to an acidic effervescent component for direct tableting of effervescent tablets and a process for its preparation.

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