Molecular formula: Na2H2P2O7
Molecular weight: 221.95
National Standard: GB 1886.339-2021
CAS Number: 7758-16-9
Other Name: Disodium Pyrophosphate; Disodium Dihydrogen Pyrophosphate;DisodiumDihydrogen Diphosphate
INS: E450I
CNS.:15.008
ROR:15-22-28-40
Properties
White powder or granular;Relative density 1.86g/cm3;Soluble in water and insoluble in ethanol; If its aqueous solution is heated together with diluted inorganic acid, it will be hydrolyzed into phosphoric acid; It is hydroscopic, and when absorbing humidity it will become into a product with hexa-hydrates; If it is heated at a temperature above 220℃, it will be decomposed into sodium meta phosphate.
Application
Buffer; emulsifier; leavening agent; sequestrant. As a leavening agent it is applied to roast foodstuffs to control the fermentation speed; When applied to instant noodles, it can shorten water resetting time and avoid stickiness and mushiness of the noodles; When applied to crackers or cakes, it may shorten fermentation time, lower the breakage, make the porous space in good order and therefore lengthen the shelf life.
Package
Packing :25 kgs bag,1000 kgs,1100 kgs, 1200 kgs jumbo bag
Loading:25 kgs on pallet: 24MT/20’FCL; Un-palletized:25MT/20’FCL
Jumbo bag :20 bags /20’FCL ;
Specifications
No | Specifications | National Standard | Ronghong Standard |
1 | Assay % ≥ | 93—100.5 | 96.0 |
2 | Phosphorus pentoxide % ≥ | / | 64 |
3 | PH value (10g/L solution) | 3.5-4.5 | 3.5-4.5 |
4 | Moisture % ≤ | / | 0.2 |
5 | Sulfates(SO4) % ≤ | / | 0.1 |
6 | Heavy metal, as Pb % ≤ | 0.001 | 0.0002 |
7 | Arsenic, as As % ≤ | 0.0003 | 0.0001 |
8 | Fluoride as F % ≤ | 0.005 | 0.001 |
9 | Water insoluble % ≤ | 1.0 | 0.008 |
10 | Pb % ≤ | 0.0002 | 0.0001 |
11 | Fe % ≤ | / | 0.0005 |
12 | Cl % ≤ | / | 0.015 |
13 | Cadmium %≤ | / | 0.0001 |
14 | Mercury %≤ | / | 0.0001 |
15 | Aluminum %≤ | / | 0.015 |
16 | Bulk Density | Granular-0.93g/cm3,powder-0.975g/cm3 | |
17 | Loss on Drying %≤ | / | 0.5% |