Food & beverage
Emulsifying salt and buffer in processed cheese and meat products.
Ingredients / Phosphates / Tetrasodium Pyrophosphate, TSPP
Phosphates
Tetrasodium Pyrophosphate, TSPP (E 450(iii))
Tetrasodium pyrophosphate (TSPP) 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. | 7722-88-5 |
|---|---|
| E-number (EU) | E 450(iii) |
| Synonyms | Tetrasodium pyrophosphate, Tetrasodium disphosphate, Tetrasodium phosphate |
| Chemical formula | Anhydrous: Na4P2O7 Decahydrate: Na4P2O7 · 10H2O |
| Molecular weight | Anhydrous: 265,94 Decahydrate: 446,09 |
| Description | Colourless or white crystals, or a white crystalline or granular powder. The decahydrate effloresces slightly in dry air |
| Solubility | Soluble in water. Insoluble in ethanol |
| Grades | EU Reg. 231/2012 (E 450(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 tetrasodium pyrophosphate (TSPP) is
Chemical name: Tetrasodium diphosphate. Formula Anhydrous: Na4P2O7 Decahydrate: Na4P2O7 · 10H2O, molecular weight Anhydrous: 265,94 Decahydrate: 446,09. Colourless or white crystals, or a white crystalline or granular powder. The decahydrate effloresces slightly in dry air. Soluble in water. Insoluble in ethanol. (Source: EU Regulation 231/2012, E 450(iii).)
Applications by industry
Sample specification
Values from EU Regulation 231/2012 (E 450(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 | Content not less than 95 % of Na4P2O7 on the ignited basis P2O5 content not less than 52,5 % and not more than 54,0 % |
|---|---|
| Loss on ignition | Not more than 0,5 % for the anhydrous salt, not less than 38 % and not more than 42 % for the decahydrate (105 °C, 4 hours then 550 °C, 30 minutes) |
| Water insoluble matter | Not more than 0,2 % |
| 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 1mg/kg |
| Mercury | Not more than 1 mg/kg |
Download the full spec sheet (PDF)
Also available
Further sheets under the same EU entry. Send us the variant you need with your quote request.
- TSPP C grade: 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 tetrasodium pyrophosphate (TSPP) used for?
Typical uses by industry. Food & beverage: Emulsifying salt and buffer in processed cheese and meat products. 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 450(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 tetrasodium pyrophosphate (TSPP)?
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 tetrasodium pyrophosphate (TSPP)?
Send us the grade, quantity and delivery location. Email [email protected] or call +1 (713) 766-6811.