What is Sodium Citrate

The term sodium citrate is most commonly used to refer to trisodium citrate. However, it can also refer to other sodium salts from citrate — such as disodium citrate and monosodium citrate.Food grade sodium citrate — identified by the E number E331 — has many commercial applications. One of its primary uses is to prolong the shelf life of food products. In addition to its widespread use as a preservative, its flavoring characteristic makes it a popular ingredient in many beverages — especially those with citrus flavors. Though few people are aware of sodium citrate’s formal name, they rely on its strength as an alkalizer when they use Alka Seltzer tablets — making it quite a popular compound found in many households.

  • Synonyms: Citric Acid Trisodium Salt, E 331, Sodium Citrate, Sodium Citrate Anhydrous, Trisodium Citrate, Trisodium Citrate Anhydrous
  • INCI: Sodium Citrate
  • Chemical formula: Na3C6H5O7
  • CAS # : 68-04-2
  • Hazard: May form combustible dust concentrations in air


Use the links below to view all package sizes for these specific products:

Sodium Citrate 33% FCC
Sodium Citrate DIHY USP/FCC
Trisodium Citrate Dihydrate USP FCC JBL MTL

Product specifications

AppearanceClear Pale-Yellow Liquid
SolubilitiesSoluble in water
Molecular weight258.06 g/mol
Weight per gallon10.4296 lbs/gal
ClassAcidulant, Citrate
GradesIndustrial, ACS, USP, NF Grade, Kosher, Halal


  • Food and Beverage: It is primarily used as a preservative, a flavoring agent, or both. Its tartness adds flavor to a range of foods and drinks such as bratwurst, club soda, powdered drink mixes, gelatins, jams, wines, carbonated drinks, ice cream, processed cheeses, milk powders, and yogurt. Furthermore, it is added as an emulsifying salt in almost all processed sliced cheese foods to prevent them from becoming over0ly greasy when melted.
  • Pharmaceuticals:It is used as a flavoring agent, it helps with the palatability of such products. These combined effects also make it a useful ingredient in foaming vitamin tablets, denture cleaners, and pain relievers. It is used in blood transfusions; sodium citrate has been a known anticoagulant. It is used in coating in tubes used for blood collection and preservative in blood banks.
  • HI&I: It is used as a sequestering builder. It influences the alkalinity of solutions and bonds with minerals found in water in order to soften it.
  • Personal Care: It is used as anti-aging creams & lotions, bar soap, body wash, hair care, moisturizing creams, shampoo and sunscreens
  • Others: From reducing rust and calcium in boiler systems to decontaminating radioactive materials in nuclear settings, it is prized for its cleaning and polishing abilities as well as its lack of toxicity. It can be used as a descaler that does not require the equipment being cleaned to stop operating.


The term sodium citrate is most commonly used to refer to trisodium citrate. However, it can also refer to other sodium salts from citrate — such as disodium citrate and monosodium citrate. It is also known by its IUPAC name as trisodium 2-hydroxypropane-1,2,3-tricarboxylate, and it has the chemical formula Na3C6H5O7 and the assigned CAS Number 68-04-2. Other names for sodium citrate include citric acid, trisodium salt, and 1,2,3-propanetricarboxylic acid.

Whether you are a sodium citrate supplier, a member of a research and development team, or a procurement professional, you can count on food grade ingredient distribution from Brenntag North America. Our clean label alternatives, tailor-made supply chain solutions, and just-in-time deliveries are designed to support your business’s success.

Thanks to our portfolio of more than 10,000 products, combined with our distribution network that stretches across more than 70 countries and 500 locations, you will always get the quality products you need on time and in the quantity you require.

Sodium Citrate is available in metal drums, bags quantities

You can download a copy of the SDS for sodium citrate from Brenntag Connect.

Download the SDS now.


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