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 Food Grade
1. Appearance  White powder   White powder
2. Assay(as Na2H2P2O7)%≥95. 0 95. 0
3.P2O5%≥ 63. 0-64. 0 63. 0-64. 0
4. PH Value 3. 5-4. 5 3. 5-4. 5
5.Water Insoluble %≤1. 0 1. 0
6.Fluoride (as F) % ≤- 0. 005
7. Heavy Metals (as Pb) % ≤- 0. 001
8.Arsenic (As)% ≤- 0. 0003
9.Loss on ignition(105) %≤0. 5  0. 5