Sorbic Acid & Sorbates
Potassium Citrate
Chemical Name: Mono-hydrous trisodium 2-hydroxy propane-1,2,3-tricarboxylate potassium citrate.
Molecular Formula: C6H5K3O7
Molecular Weight: 324.41
Properties: 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 230℃) .
Quality standard: GB14889-94, BP93/98, E332
Application: 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.
Packing: It is packed with polyethylene bag as liner and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg.
Storage and transport: Kept in tightly-closed containers, it should be stored in a dry and ventilative warehouse, kept away from moisture and hot. Furthermore, it should be separately from poisonous substances. Handled with care, so as to avoid damage to bags.
Index item GB14889-94 BP93/98 E332
Appearance White, hygroscopic, granular powder or transparent crystals
Identity test Positive tests for citrate and for potassium
Appearance   Clear and colourless  
Content(in dry basis),% ≥99.0 99.0-101.0 ≥99.0
Chloride ≤ppm -- 50 --
Heavy metal(in lead)≤ppm 10 10 5
Sodium,≤% 0.3 --
Oxalate,≤% -- 0.03 0.01
Sulfate,≤% -- 0.15 --
Acidity and alkalinity passed testing Passes test --
Readily carbonizable substance -- Not deeper than standard --
Loss on drying(180℃,4h) 3.0-6.0 4.0-7.0 ≤6%
PH range(5% transparent solvent) --   7.5-9.0
Arsenic,≤ppm 3 1
Lead,≤ppm -- -- 1
Mercury,≤ppm -- 1
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