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

Specifications:

Items                                                            FCC-Ⅳ
Appearance                                                 White crystals or powder
Contents ( as Na₂H₂P₂O₇)                       ≥95.0%
Arsenic, as As                                             ≤0.0001%
Heavy metals as Pb                                  ≤0.001%
Pb                                                                  ≤0.0001%
Fluoride, as F                                              ≤0.005%
Water insoluble                                           ≤1.0%
PH value                                                       3.5-4.5