Sodium Acid pyrophosphate

Molecular Formula: Na₂H₂P₂O₇
Molecular Weight: 221.939
CAS Number: 7758-16-9
EINECS Number: 231-835-0
Customs Code: 28353990
Alias: SAPP

Characteristics:

  • White powder or white granules
  • Relative density: 1.1
  • Soluble in water, insoluble in ethanol
  • Aqueous solution hydrolyzes into phosphoric acid when heated with dilute inorganic acids
  • Hygroscopic, forms a hexahydrate upon absorbing moisture
  • Decomposes into sodium metaphosphate when heated above 220°C
Category: Tag:

Description

Product Uses:

  • Food Processing:
    1. Used as a rapid fermenting agent, quality improver, leavening agent, buffer, chelating agent, rehydrating agent, and adhesive.
    2. As an acidic component in synthetic leavening agents for bread and pastries, it produces CO₂ over a longer period, making it suitable for baked goods with low moisture content.
    3. Combined with other phosphates, it acts as a water retention agent in processed cheese, luncheon meat, ham, meat products, and seafood.
    4. Rehydrating agent in instant noodles.
  • Feed Additive: Enhances the nutritional value of animal feed.

Packaging, Storage, and Transportation:

  • Available in 25kg, 50kg, 1000kg, 1200kg, 1250kg bags with customizable options.
  • Store in a dry, well-ventilated area, and avoid exposure to moisture. It retains its quality during long-term storage, and any clumping can be resolved by crushing or dissolving before use.
  • Non-toxic and non-hazardous, it can be transported by road, sea, or rail as general cargo.

Specifications:

Item
Index GB25567-2010-2010
Main content (as Na2H2P2O7), ω/ % ≥
95
 P2O5, ω/ % ≥
63.0-64.0 
pH value (10g/L)
3.5—4.5
Water insoluble，ω/ % ≤
1
F，ω/ % ≤
0.005
Heavy metal(as Pb), ω/ % ≤
0.001
As, ω/ % ≤
0.0003
Pb, ω/ % ≤
0.0002

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