Sodium Citrate

Other Trading Names:

  • Tri-Sodium Citrate
  • Citric Acid Trisodium Salt
  • Citric Acid Sodium
  • Sodium Citrate Tribasic

CAS Number: 68-04-2

HS Code: 29181520

Types of Packaging:

  • 25kg/Bag
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Sodium Citrate

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Name of index






Crystalline white powder or colourless crystals






≥99.0%( anhydrous basis)

Acidity and Alkalinity


Accord with the test










Heavy metals(As Pb), ≤%






Oxalate(As H2C2O4), ≤%






Easy carbonify substance


Accord with the test




Chloride, ≤%






Loss on drying,






pH value(5% aqueous solution)























Chemical Description

  • Trisodium citrate has the chemical formula of Na3C6H5O7.It is sometimes referred to simply as sodium citrate, though sodium citrate can refer to any of the three sodium salts of citric acid. It possesses a saline, mildly tart flavor.
  • For this reason, citrates of certain alkaline and alkaline earth metals (e.g. sodium and calcium citrates) are commonly known as "sour salt" (occasionally citric acid is erroneously termed sour salt).
  • Sodium citrate is colorless or white crystal and crystalline powder. It is inedible and tastes salt, cool. It will lose crystal water at 150° C and decompose at a higher temperature. It dissolves in ethanol.
  • Sodium citrate is used to enhance flavor and maintain stability of active ingredients in food and beverage in the detergent industry, it can replace Sodium tripolyphosphate as a kind of safe detergent it can also be used in fermentation, injection, photography and metal plating.
  • Sodium citrate is sometimes used as an acidity regulator in drinks, and also as anemulsifier for oils when making cheese.
  • It allows the cheeses to melt without becoming greasy.
  • Sodium citrate is also known as citrate of soda, the white crystals or granular powder was obtained by neutralizing citric acid with sodium carbonate. It is soluble in water but less so in alcohol.
  • Sodium citrate was used as a preservative in albumen papers.
  • Sodium Citrate is a buffer and sequestrant obtained from citric acid as sodium citrate anhydrous and as sodium citrate dihydrate or sodium citrate hydrous.
  • The crystalline products are prepared by direct crystallization from aqueous solutions. sodium citrate anhydrous has a solubility in water of 57 g in 100 ml at 25°c, while sodium citrate dihydrate has a solubility of 65 g in 100 ml at 25°c. it is used as a buffer in carbonated beverages and to control ph in preserves.
  • It improves the whipping properties in cream and pre- vents feathering of cream and nondairy coffee whiteners. it pro- vides emulsification and solubilizes protein in processed cheese. It prevents precipitation of solids during storage in evaporated milk.
  • In dry soups, it improves rehydration which reduces the cooking time. It functions as a sequestrant in puddings.
  • It functions as a complexing agent for iron, calcium, magnesium, and aluminum. typical usage levels range from 0.10 to 0.25%. it is also termed trisodium citrate
  • sodium citrate may be used in cosmetic formulations as an alkalizer and to bind trace metals in solutions (by means of a chelating action). It is the sodium salt of citric acid. 
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Sodium Citrate