Sodium citrate dihydrate - Trisodium citrate

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1kg £13.33 £15.99
5kg £26.24 £31.49
25kg £77.91 £93.49
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Technical grade

Trisodium Citrate Dihydrate is a tribasic salt of citric acid. It consists of colourless to white crystals and is practically odourless. Trisodium citrate dihydrate is commonly used in various technical and industrial applications mainly as a pH buffering, sequestering or emulsifying agent. Also used as a retarder for mortar mixes.


Properties of Trisodium citrate:

Other names: Sodium citrate dihydrate; Trisodium citrate, trisodium salt of 2-hydroxy-1,2,3-propanetricar­boxylic acid; trisodium salt of -hydroxy-tricarballylic acid; Natrocitral; Citrate sodique;
CAS No: 6132–04–3
EINECS No: 200–675–3
Empirical formula: C6H5Na3O7 . 2H2O
Molecular mass: 294.10 g/mol
Density: 1.7g/cm3
Appearance: colourless crystals or white, granular powder
pH: 8 – 8.7 at 50g/L at 25C
Melting point: >300 C
Solubility in water: 760 g/L (25C)

Easily soluble in hot water. Soluble in cold water. Insoluble in alcohol. Soluble in 1.3 parts water. Soluble in 0.6 parts boiling water.

Uses of Trisodium Citrate

Buffering agent.
Manufacture of household cleaners, degreasers and detergents.
Industrial applications

In the cleaning industry trisodium citrate is commonly used because of its excellent cleaning characteristics and its unusual property of being almost neutral yet portraying the characteristics of an acid as in descalers and an alkali as in degreasers. Cleaning products include laundry powders and detergents, toilet cleaners, hard surface cleaners, carpet cleaners, dish washing liquids, powder and liquid degreasers and pre-soaks. It is becoming more and more popular now as it is considered environmentally friendly, it substitutes phosphates and is readily biodegradable.

In industry trisodium citrate finds many uses including alkaline degreaser baths, electroplating chemicals for copper and nickel etc, photo chemicals. It is also used in the paper and pulp industries and the textiles industry.

sodium citrate is effective to retard plaster mixes. It must be used carefully as adding too much will prevent the plaster curing properly. Premix the citrate in water first and add to the plaster mix.

Health & Safety

Not a hazardous substance or mixture according to Regulation (EC) No. 1272/2008. This substance is not classified as dangerous according to Directive 67/548/EEC..

See MSDS for Trisodium citrate for full details in the documents section above. 

PLEASE NOTE: This product is not for human or animal consumption.


Click Here to view MSDS Safety Data Sheet

Click Here to view Sales Specification Sheet