1. Chemical name: Sodium Acid Pyrophosphate
Other Name: Disodium Pyrophosphate
2. Molecular Formula: Na2H2P2O7
3. Molecular weight: 221.90
4. CAS Number: 7758-16-9
5. Property: White monoclinic crystal powder. Its relative density is 1.86. It is soluble in water, insoluble in alcohol. It hydrolyzes to orthophosphate when heated in acid medium. It is hygroscopic, forms hexahydrate in damp air, and decomposes to metaphosphate at above 220℃
6. Specs.:
Assay (On dry basis), %: ≥ 95.0;
Loss on drying: ≤0.5% (105°C, one hour);
Water insoluble: ≤1.0%;
Fluoride: ≤10 ppm (expressed as fluorine);
Arsenic: ≤3 ppm;
Lead: ≤ 4ppm;
Heavy metals as Pb: ≤10ppm;
Ph: 3.5-4.5(1% solution);
Ror: 28;
Appearance: white granular or powder.
7. Usage: Used as rapid ferment agent, quality improver in food industry. Applied to acid component of synthetic swelling agent, such as bread and cake. Builted with other phosphates can be applied to water retention of meat product, such as canned meat, cooked ham, meat can and instant noodles.
8. Packing: In 25kgs net kraft paper bag.
9. Storage and transport: It should be stored in a dry and ventilative warehouse and kept away from moisture and poisonous substances. Handled with care, so as to avoid damage to packing bags.
