White crystal Powder Potassium Acid Citrate CAS: 6100-05-6
Chemical Name: Potassium Citrate
Appearance: White crystal or crystalline powder
Molecular Formula: C6H5O7K3.H2O
Molecular Weight: 324.41
EINECS No.: 212-755-5
Potassium citrate (also known as tripotassium citrate) is a
potassium salt of citric acid with the molecular formula C6H5K3O7.
It is a white, hygroscopic crystalline powder. It is odorless with
a saline taste. It contains 38.3% potassium by mass. In the
monohydrate form it is highly hygroscopic and deliquescent.
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.
In food processing industry, it is used as buffer, chelate agent,
stabilizer, antioxidant, emulsifier and flavoring. It can be used
in dairy product,jelly, jam, meat and tinned pastry. It also can be
used as emulsifier in cheese and refreshing in oranges and etc. In
pharmaceutical, it is used for hypokalimia, potassium depletion and
alkalization of urine.
Name of index
White, hygroscopic, granular powder or transparent crystals
Positive tests for citrate and for potassium
Appearance of solution
Clear and colourless
Assay(on anhydrous basis),%
Heavy metals(As Pb),≤ppm
Acidity or Alkalinity
Easiest carbonated substances
Not deeper than standard
Loss on drying(180°C,4h)
pH(5% aqueous solution)
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