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SODIUM ACID PYROPHOSPHATE (SAPP)
Molecular formula: : Na2H2P2O7 
Molecular Weight: 221.95
Properties: White crystal powder;Relative density 1.86 .
CAS No.: 7758-16-9 

Product Specification/Models
Sodium Acid Pyrophosphate Food Grade (SAPP) 
Specification :
Appearance    White powder
Assay %                       95.0Min
Insoluble matter in water %   1.0Max
As %                        0.0003Max
Heavy metal (Pb) %          0.001Max
Fluorides %                 0.005Max 
Ph value (1%of aqueous solution)     4.0±0.5
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