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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