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Sodium pyrophosphate SPP

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Time：2018-04-09 22:10:35   
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Detailed introduction：
Detailed introduction:
Chemical formula: Na4P2O7
Molecular weight: 265.9
Executive Standard: HG/T2968-1999
Properties: White powder, soluble in water, insoluble in alcohol, relative density 2.45, melting point 890 °C, aqueous solution is weakly alkaline. 

Technical indicators:
No.  Index name  Industrialgrade  Giftedclass
 1 Maincontent(calculatedasNa4P2O7) %≥  96.5  96.5
 2 P2O5                                                   %≥  51.5  51.5

 3

 Orthophosphate         

 qualified

  qualified
 4  pH value (1% aqueous solution)  9.9-10.7  9.9-10.7
 5 Fineness(screenedthrough60mesh) %≥  90  90
 6 Heavy metal (Pb)                             %≤  -  0.001
 7 Arsenic (calculated as As)                %≤  -  0.0003
 8 Fluoride (in F)                                   %≤  -  0.005
 9 Water insoluble matter                   %≤  0.2  0.2

Packing: Inner plastic outer packing, net weight 25kg, stored in ventilated and dry place.
 

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