Food & beverage
Acidity regulator and buffer in beverages; emulsifying salt in processed cheese.
Ingredients / Acidulants & pH control / Sodium Citrate
Acidulants & pH control
Sodium Citrate (E 331(iii))
Sodium citrate for U.S. manufacturers, from vetted producers. FCC / USP grade on request. Download the sample spec sheet, then send us your grade and quantity.
TRACED · CERTIFIED · RELIABLE · TRANSPARENT · TESTED
Key facts
| CAS No. | 6132-04-3 |
|---|---|
| E-number (EU) | E 331(iii) |
| Synonyms | Tribasic sodium citrate |
| Chemical formula | Anhydrous: C6H5O7Na3 Hydrated: C6H5O7Na3·nH2O (n = 2 or 5) |
| Molecular weight | 258,07 (anhydrous) 294,10 (hydrated n = 2) 348,16 (hydrated n = 5) |
| Description | Crystalline white powder or colourless crystals |
| Grades | EU Reg. 231/2012 (E 331(iii)) sample spec · FCC / USP available on request for U.S. food/pharma use |
| Origin | Confirmed in every offer; stated per lot on the COA |
| Storage, shelf life, packaging | Per the producer's specification, on request |
What sodium citrate is
Chemical name: Trisodium citrate. Formula Anhydrous: C6H5O7Na3 Hydrated: C6H5O7Na3·nH2O (n = 2 or 5), molecular weight 258,07 (anhydrous) 294,10 (hydrated n = 2) 348,16 (hydrated n = 5). Crystalline white powder or colourless crystals. (Source: EU Regulation 231/2012, E 331(iii).)
Applications by industry
Sample specification
Values from EU Regulation 231/2012 (E 331(iii)), consolidated text of 18.08.2026. Actual values depend on the producer; the producer's specification and the COA for your lot are available on request.
| Assay | Not less than 99 % on the anhydrous basis |
|---|---|
| Loss of drying | Anhydrous: not more than 1,0 % (180 °C, 18 hours) Dihydrate: 10,0 to 13,0 % (180 °C, 18 hours) Pentahydrate: not more than 30,3 % (180 °C, 4 hours) |
| Oxalates | Not more than 100 mg/kg expressed as oxalic acid, after drying |
| Arsenic | Not more than 1 mg/kg |
| Lead | Not more than 2 mg/kg |
| Mercury | Not more than 1 mg/kg |
Download the full spec sheet (PDF)
Documents and sourcing
Droplet promise. Origin confirmed in every offer. Sample lot record on request, from the producer. SDS, allergen and other statements on request. We work with vetted producers and give you access to U.S.- and EU-stocked material through our partner network.
Data sheet, SDS and COA on request. Every delivery ships with a COA linked to the delivered lot.
Questions buyers ask
What is sodium citrate used for?
Typical uses by industry. Food & beverage: Acidity regulator and buffer in beverages; emulsifying salt in processed cheese. Suitability for your product and market is confirmed with the producer's specification.
Which grades can McBoeck supply?
Food grade to EU Regulation 231/2012 (E 331(iii)). FCC / USP grade is available on request for U.S. food and pharma use. Particle size and other grade details follow the producer's specification, on request.
Which documents come with sodium citrate?
Every delivery ships with a COA linked to the delivered lot. Origin confirmed in every offer. Sample lot record on request, from the producer. SDS, allergen and other statements on request.
What does the sample spec sheet show?
Limits for assay, loss of drying, oxalates, arsenic, lead and mercury, taken from EU Regulation 231/2012. Actual values depend on the producer; the producer's specification and the lot COA are available on request.
How do I get a quote?
Send us the grade, quantity and delivery location through the quote form or at [email protected]. We work with vetted producers and give you access to U.S.- and EU-stocked material through our partner network.
Related acidulants & pH control
Acetic AcidCalcium CitrateCalcium GluconateCitric Acid, AnhydrousAll acidulants & pH control
Need sodium citrate?
Send us the grade, quantity and delivery location. Email [email protected] or call +1 (713) 766-6811.