Sodium Acid Pyrophosphate, known as SAPP or E450(i) CAS 7758-16-9, is an odorless white crystalline phosphate. It dissolves readily in water and delivers mild acidic reaction. It is widely used as slow-release leavening agent and moisture-binding additive for food processing, and also works as a sequestrant for industrial formulations. TNJ Chemical is the leading manufacturer and exporter since 2001. We guarantee high quality, competitive price, stable supply, fast delivery and tech support etc. To inquire more, please contact sales@tnjchem.com
Product Information
Chemical Name: Sodium Acid Pyrophosphate
Synonym: SAPP, Disodium Dihydrogen Pyrophosphate, E450(i)CAS No.: 7758-16-9
Molecular Formula: Na₂H₂P₂O₇
Molecular Weight: 221.94
HS Code: 2835252000
Appearance: White crystalline powder or free-flowing granules
Solubility: Soluble in water; insoluble in ethanol
pH (10 g/L aqueous solution): 4.0–5.0
Decomposition Temperature: 220 ℃
Character: Hygroscopic, aqueous solution gradually hydrolyzes when heated
| Item | Range |
|---|---|
| Assay (Na₂H₂P₂O₇) | 95.0–100.5 % |
| P₂O₅ Content | 63.0–64.0 % |
| Water Insoluble Matter | ≤ 1.0 % |
| Loss on Drying | ≤ 0.5 % |
| Fluoride (F) | ≤ 50 mg/kg |
| Arsenic (As) | ≤ 3 mg/kg |
| Lead (Pb) | ≤ 2 mg/kg |
| Heavy Metals (as Pb) | ≤ 10 mg/kg |
Use & Application
SAPP serves as delayed-action leavening acid for baking powder, frozen batter, biscuits and pancakes. It retains moisture in cooked ham, sausages and seafood to keep juicy texture. It also acts as chelator for instant noodles, water treatment, detergent builders and metal surface treatment.
Supplied in 25kg woven sacks with inner PE liner.
Store in cool, dry, ventilated warehouse. Keep packages well sealed against moisture.
Separate from strong alkaline and toxic materials.
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