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Pemasok yang Diaudit | 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 either uric acid or cystine. |
| Item | GB14889-94 | BP93/98 | E332 |
| Appearance | White, hygroscopic, granular powder or transparent crystals | ||
| Identification | Positive tests for citrate and for potassium | ||
| Appearance of solution | Clear and colourless | -- | |
| Assay(on anhydrous basis),% | ≥99.0 | 99.0-101.0 | ≥99.0 |
| Chlorides,≤ppm | -- | 50 | -- |
| Heavy metal(As Pb),≤ppm | 10 | 10 | 5 |
| Sodium,≤% | -- | 0.3 | -- |
| Oxalates,≤% | -- | 0.03 | 0.01 |
| Sulphates,≤% | -- | 0.15 | -- |
| Acidity or Alkalinity | By test | Passes test | -- |
| Readity carbonisable substances | -- | Not deeper than standard | -- |
| Loss on drying(180ºC,4h) | 3.0-6.0 | 4.0-7.0 | ≤6% |
| pH(5% aqueous solution) | -- | -- | 7.5-9.0 |
| Arsenic(As),≤ppm | 3 | -- | 1 |
| Lead(Pb),≤ppm | -- | -- | 1 |
| Mercury(Hg),≤ppm | -- | -- | 1 |
Usage of Potassium Citrate
White crystal or powder; odourless; taste salty; slightly deliquescence; readily soluble in water or glycerine, almost insoluble in ethanol (Relative density 1.98, it will melt and decompose when heated to 230ºC) .
In food processing industry,it is used as buffer agent ,chelate agent, stabilizer, antibiotic oxidizer, emulsifier, flavor
regluator, used in dairy product, jellies, jam, meat, tinned pastry.
Used as emulsifier in cheese and used in citrus freshening.
In pharmaceutical, it is used for curing hypokalimia, potassium depletion and alkalization of urine.
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