Sodium citrate is colourless or white crystalline granule or crystalline powder, odorless, tasting salty and cool, soluble in water but insoluble in ethanol and slightly deliquescent in moist air. The PH value is 7.6-8.6 in 5% aqueous solution. If heated to 150℃,it may lose crystal water.
Sodium Citrate Specifications
Items | Specifications |
Appearance | White crystals or crystalline powder |
Identification | Conforms |
Clarity and color of Solution | Conforms |
Assay | 99.0 - 101.0% |
Chloride(Cl-) | 50 ppm max |
Sulfate(SO42-) | 150 ppm max |
Loss on drying | 11.0 - 13.0% |
Heavy metals(Pb) | 10 ppm max |
Oxalate | 300 ppm max |
Alkalinity | Conforms |
Readily carbonisable substances | Conforms |
In food processing industry:
It is used as buffer,chelate agent,nutrient additive,emulslfier,flavor for yoghurt. and as preservative in syrup manufactured goods,buffer acidity in cold drink,prevent acid in dairy products,used as binder in cheese and minced meat,acid coagulant in jellies and jam,emulsifier and stabilizer,in cheese and ice cream.
In Detergent Industry:
It can replace sodium tripolyphosphate as a kind of assistant. It can also be used in fermentation, injection,photography and metal plating.
In pharmaceutical industry:
it is used as Anticoagulant.
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