Potassium citrate (also known as tripotassium citrate) is a potassium salt of citric acid with the molecular formula K3C6H5O7. It is a white, hygroscopic crystalline powder. It is odorless with a saline taste. It contains 38.28% 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 uric acid or cystine
Potassium citrate | |
Tripotassium 2-hydroxypropane-1,2,3-tricarboxylate | |
Identifiers | |
· 866-84-2 | |
E332(ii) (antioxidants, ...) | |
PubChem CID | · 13344 |
Properties | |
K3C6H5O7 | |
306.395 g/mol | |
Appearance | white powder hygroscopic |
odorless | |
1.98 g/cm3 | |
180 °C (356 °F; 453 K)[1] | |
230 °C (446 °F; 503 K)[1] | |
soluble | |
Acidity (pKa) | 8.5 |
Product Characters:White or yellowish crystalline ganules or crystalline powders
Executive Standards:BP/USP/FCC/E332/GB1886.74-2016
Packaging:plastic woven bag, 25kg net composite paper-plastic bags or 3-ply kraft paper bags with PE liner,500kg or 1000kg net PP woven jumbo bags
Storage:plastic woven bag, 25kg net composite paper-plastic bags or 3-ply kraft paper bags with PE liner,500kg or 1000kg net PP woven jumbo bags
Main Usage:Mainly used in food industry, pharmaceutical industry and laboratory analytical reagents. In the food industry it can be used as buffer, chelating agents, stabilizer etc., it can be used for milk and dairy products, jellies, jams, meat, cheese emulsification, citrus preservation etc. In the pharmaceutical industry it’s used for hypokalemia, potassium deficiency and alkaline urine. It can also be used for chemical analysis reagent.