Trisodium citrate

Trisodium citrate

Trisodium citrate has the chemical formula of Na₃C₆H₅O₇. It is sometimes referred to simply as “sodium citrate” and uses as food additives.

CAS NO:6132-04-3

E NO: E331iii

  • Description
  • Analysis


Trisodium citrate with IUPAC name Trisodium 2-hydroxypropane-1,2,3-tricarboxylate is a weak base and has a sour and salty taste. There are two types of this product: anhydrous and dehydrate. By neutralization of citric acid with pure sodium hydroxide or carbonate, Trisodium citrate dihydrate is prepared. In the food industry, Na3C6H5O7 is used as preservatives and in other fields used as anticoagulants in blood and biologically buffers, and its effects in the prevention of kidney stones. For information on how to buy this product and place an order, you can contact our colleagues in the sales department.

Where to buy Trisodium citrate?

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Chemical formula


Molar mass


258.06 g/mol (anhydrous),

294.10 g/mol (dihydrate)



White crystalline powder


1.7 g/cm3
Melting point > 300 °C (572 °F; 573 K) (hydrates lose water ca. 150 °C)
Boiling point Decomposes
Solubility in water  Pentahydrate form: 92 g/100 g H2O (25 °C)
Chemical structure   structure of trisodium citrate


What is Trisodium citrate used in?

This product is also referred to as sodium citrate, has many applications in different parts. Some of them are mention below:

In food

  • As an additive, usually for flavor or as a preservative. For example, use as a flavoring agent in club soda and also to contribute a tart flavor in ready-to-drink beverages.
  • As a chelating agent, to prevent spoilage of foods
  • As a pH control agent, for increasing preservative
  • As an emulsifier for making cheese

trisodium citrate in cheese

In medical

  • As an anticoagulant in blood transfusions
  • To relieve discomfort in urinary tract infections
  • As an osmotic laxative
  • As an antacid to reduce the risks associated with the aspiration of gastric contents

anticoagulant in blood transfusions

In industrial

  • As an industrial cleaner
  • To produce various goods such as inks, paints, coatings, agrochemicals, plastics, polymers, textile, and leather
  • Boiler descaling

Safety information

Research and studies show this sodium salt has no side effects on the body, so World Health Organization (WHO) is generated as safe foods.

In some cases, this salt of citric acid has side effects such as muscle twitching or cramps, swelling or weight gain, weakness, mood changes, rapid and shallow breathing, fast heart rate.


According to the MSDS paper mention some points important:


  •  inhaled: provide fresh air.
  •  skin contact: rinse and then wash skin with waterand soap.
  •  eye contact:  rinse cautiously with water for several minutes.
  • f ingesting: rinse the mouth.



Sodium Citrate