Sodium Acid Pyrophosphate, SAPP

Sodium Acid Pyrophosphate, SAPP
Chemical formula  Na2H2P2O7
Molecular weight: 221.95
CAS Number: 7758-16-9
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.
Uses:
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.
Packing and storage:
Packed in 25kg,50kg,1000kgnet bage,store at a cool, dry and well ventilated place.
Guaranteed Technical Specifications 
Specifications Industrial Grade 
1 Appearance White powder 
2 Assay(as Na2H2P2O7)% 95.0 
3P2O5% 63.0-64.0 
4 PH Value 3.5-4.5 
5Water Insoluble % 1.0 
6Fluoride (as F) %  - 
7 Heavy Metals (as Pb) %  - 
8Arsenic (As)%  - 
9Loss on ignition(105) % 0.5 
we can also produce Food Grade Sodium Acid Pyrophosphate.