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Citrates
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Sodium Citrate
Chemical Name: Dihydrous trisodium 2-hydroxy propane-1,2,3-tricarboxylate sodium citrate.
Molecular Formula: Na3C6H5O7·2H2O
Molecular Weight: 249.10
Properties: Colourless or white crystalline granule or crystalline powder, odourless;taste salty and cold;soluble in water,difficulity in ethanol;slightly deliquescence in moist air, PH7.6-8.6 in 5% aqueous solution,when heated to 150℃,it may lose crystal water.
Quality standard: GB6782-2009,BP93/98,E331
Application: In food processing industry,it is used as buffer,chelate agent,nutrient additive,emulsifier,flavor for yoghurt. In pharmaceutical industry,it is used as anticoagulant and as binder in cheese and minced meat,acid coagulant in jellies and jam,emulsifier and stabilizer in cheese and ice cream.
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 damaging to bags.
Index item GB6782-2009 BP93/98 E331
Appearance -- Colorless or white crystal or crystalline
Content,% 99.0-100.5t 99.0-101.0 99.0-101.0
Acidity and alkalinity up to specification Accord with the test Accord with the test
Sulfate,≤% 0.01 0.015 0.015
Heavy metal(in lead),≤% -- 0.001 0.0005
Oxalate,≤% 0.01 0.03 0.01
Readily carbonizable substance 1.0% Accord with the test Accord with the test
Chloride,≤% 0.005 0.005 0.005
Loss on drying,% 10.0-13.0 11.0-13.0 11.0-13.0
PH value(5% transparent solvent) -- -- 7.5-9
Arsenic,≤ppm 1 -- 1
Lead,≤ppm 2 -- 1
Mercury,≤ppm -- -- 1
Clarity -- Accord with the test
Light transmittance 96.0    
Ferric salt≤mg/kg 5    
Calcium salt ≤mg/kg 0.02    
Water insolubles passed soluble film test    
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