Food & beverage
Leavening acid in baking powder and bakery; keeps processed potatoes from discolouring.
Ingredients / Phosphates / Sodium Acid Pyrophosphate, SAPP
Phosphates
Sodium Acid Pyrophosphate, SAPP (E 450(i))
Sodium acid pyrophosphate (SAPP) 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. | 7758-16-9 |
|---|---|
| E-number (EU) | E 450(i) |
| Synonyms | Disodium dihydrogen diphosphate, Disodium dihydrogen pyrophosphate, Sodium acid pyrophosphate, Disodium pyrophosphate |
| Chemical formula | Na2H2P2O7 |
| Molecular weight | 221,94 |
| Description | White powder or grains |
| Solubility | Soluble in water |
| Grades | EU Reg. 231/2012 (E 450(i)) 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 acid pyrophosphate (SAPP) is
Chemical name: Disodium dihydrogen diphosphate. Formula Na2H2P2O7, molecular weight 221,94. White powder or grains. Soluble in water. (Source: EU Regulation 231/2012, E 450(i).)
Applications by industry
Sample specification
Values from EU Regulation 231/2012 (E 450(i)), 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 disodium diphosphate P2O5 content not less than 63,0 % and not more than 64,5 % |
|---|---|
| Loss on drying | Not more than 0,5 % (105 °C, 4 hours) |
| Water insoluble matter | Not more than 1 % |
| 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 |
| Aluminium | Not more than 200 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 acid pyrophosphate (SAPP) used for?
Typical uses by industry. Food & beverage: Leavening acid in baking powder and bakery; keeps processed potatoes from discolouring. 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(i)). 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 acid pyrophosphate (SAPP)?
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 drying, water insoluble matter, fluoride, arsenic, cadmium, lead, mercury and aluminium, 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 sodium acid pyrophosphate (SAPP)?
Send us the grade, quantity and delivery location. Email [email protected] or call +1 (713) 766-6811.