Sodium Acid Pyrophosphate(SAPP) CAS NO.7758-16-9

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°C, 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.

  Appearance                      White powder 
    Content as Na2H2P2O7       95%min 
    Insoluble Substance           1%max 
    Arsenic as As                     3ppm max 
    Heavy metal as Pb             2ppm max 
    Fluoride as F                      30ppm max 
    PH(1%solution)Value          4.0±0.5 
   Solubility        13g per 100g saturated solution at 25℃ 

Sodium Acid Pyrophosphate(SAPP)

Chemical formula : Na2H2P2O7
Molecular weight: 221.95

CAS Number: 7758-16-9
Properties:
White powder granular;Relative density 1.86g/cm3;Soluble in water insoluble in ethanol; If its aqueous solution is heated together with diluted inorganic acid, it will be hydrolyzed into phosphoric acid; It is hydroscopic, when absorbing humidity it will become into a product with hexa-hydrates; If it is heated at a temperature above 220°C, 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 avoid stickiness mushiness of the noodles; When applied to crackers cakes, it may shorten fermentation time, lower the breakage, make the porous space in goodder therefore lengthen the shelf life.