Food & beverage
Acidity regulator and emulsifying salt.
Ingredients / Phosphates / Trisodium Phosphate (TSP)
Phosphates
Trisodium Phosphate (TSP) (E 339(iii))
Trisodium phosphate (TSP) for U.S. manufacturers, from vetted producers. FCC / USP grade on request. Download the sample spec sheet, then send us your grade and quantity.
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Key facts
| CAS No. | 7601-54-9 |
|---|---|
| E-number (EU) | E 339(iii) |
| Synonyms | Sodium phosphate, Tribasic sodium phosphate, Trisodium orthophosphate |
| Chemical formula | Anhydrous: Na3PO4 Hydrated: Na3PO4 nH2O (n = 1/2, 1, 6, 8, or 12) |
| Molecular weight | 163,94 (anhydrous) |
| Description | White odourless crystals, granules or crystalline powder |
| Solubility | Freely soluble in water. Insoluble in ethanol |
| Grades | EU Reg. 231/2012 (E 339(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 trisodium phosphate (TSP) is
Trisodium phosphate is obtained from aqueous solutions and crystallises in the anhydrous form and with 1/2, 1, 6, 8 or 12 H2O. The dodecahydrate always crystallises from aqueous solutions with an excess of sodium hydroxide. It contains ¼ molecule of NaOH. Formula Anhydrous: Na3PO4 Hydrated: Na3PO4 nH2O (n = 1/2, 1, 6, 8, or 12), molecular weight 163,94 (anhydrous). White odourless crystals, granules or crystalline powder. Freely soluble in water. Insoluble in ethanol. (Source: EU Regulation 231/2012, E 339(iii).)
Applications by industry
Sample specification
Values from EU Regulation 231/2012 (E 339(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 | Sodium phosphate anhydrous and the hydrated forms, with the exception of the dodecahydrate, contain not less than 97,0 % of Na3PO4 calculated on the dried basis. Sodium phosphate dodecahydrate contains not less than 92,0 % of Na3PO4 calculated on the ignited basis P2O5 content between 40,5 % and 43,5 % on the anhydrous basis |
|---|---|
| Loss on ignition | When dried at 120 °C for two hours and then ignited at about 800 °C for 30 minutes, the losses in weight are as follows: anhydrous not more than 2,0 %, monohydrate not more than 11,0 %, dodecahydrate: between 45,0 % and 58,0 % |
| Water insoluble matter | Not more than 0,2 % on the anhydrous basis |
| Fluoride | Not more than 10 mg/kg (expressed as fluorine) |
| Arsenic | Not more than 1 mg/kg |
| Cadmium | Not more than 1 mg/kg |
| Lead | Not more than 1 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 trisodium phosphate (TSP) used for?
Typical uses by industry. Food & beverage: Acidity regulator and emulsifying salt. 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 339(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 trisodium phosphate (TSP)?
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 on ignition, water insoluble matter, fluoride, arsenic, cadmium, 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 phosphates
Dicalcium PhosphateDipotassium Hydrogen Phosphate (DKP)Disodium Phosphate (DSP)Monocalcium PhosphateAll phosphates
Need trisodium phosphate (TSP)?
Send us the grade, quantity and delivery location. Email [email protected] or call +1 (713) 766-6811.