Sodium Acid Pyrophosphate (SAPP)

Sodium Acid Pyrophosphate (SAPP)

Synonyms: disodium dihydrogenpyrophosphate; di-sodium dihydrogen pyrophosphate anhydrous ,Sodium Acid Pyrophosphate; Sodium pyrophosphate dibasic; Diphosphoric acid, disodium salt; Disodium Dihydrogen Pyrophosphate; Disodium Pyrophosphate; Disodium pytophosphate; SAPP; disodium phosphonato phosphate  

Molecular Weight: 219.924  

Molecular Formula: Na₂O₇P₂  

CAS No.: 7758-16-9  

EINECS:  231-835-0

 

Physicochemical  Properties: 

White monoclinic crystalline powder or molten solid. The relative density is 1.86. Soluble in water, insoluble in ethanol. When the aqueous solution is heated with dilute inorganic acid, it will be hydrolyzed into phosphoric acid. Sodium acid pyrophosphate is slightly hygroscopic and forms six crystalline hydrates after absorbing water. When heated above 220°C, it decomposes to form sodium metaphosphate. When used as a leavening agent, it may contain an appropriate amount of aluminum salt and/or calcium salt to control the reaction rate.

 

Applications and Usages: 

Used as a rapid starter, moisture retaining agent, quality improver, used in baked foods such as bread, biscuits, meat, aquatic products, etc.

 

Product Specification:

 

Items		Technical Grade	Food Grade
Main content (Na2H2P2O7)	≥	95.0%	95.0%
P2O5		63.0-64.0	63.0-64.0
Water insoluble matter	≤	1.0%	1.0%
PH value		3.5-4.5	3.5-4.5
Loss on ignition	≤	0.5%	0.5%
Arsenic (As)	≤		0.0003%
Fluoride (F)	≤		0.005%
Heavy metal (Pb)	≤		0.002%
APPEARANCE	White powder or granula

 

 

Packing: 

In 25kg PE+PP bag, or according to customer's requirement.

 

 

PIC: Flora  Cao
Email: km155@kmchem.com
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