Specifications

Colourless or white crystals, or a white crystalline or granular powder, easily vaporize. It will loose water at 100

1,Formula :Na₄P₂O₇ ;Na₄P₂O₇·10H₂O

2,Formula wt, anhydrous 265.90  Formula wt, decahydrate 446.06

3,CAS: anhydrous [7722-88-5];  CAS: decahydrate [13472-36-1]

4,Specificity: Colourless or white crystals, or a white crystalline or granular powder, easily vaporize. It will loose water at 100°C. It will melt at 985°C, easily melt in water, can not melt in ethyl alcohol. Aqueous is alkalescence.

5,Packing: 25kg net paper bag or 1mt big bag with PE liner.

Name of index	FCC-V	E450(iii)
Description	Colorless or white crystals, or a white crystalline or granular powder
pH of a 1 % solution	--	9.8-10.8
Assay (ignited basis)	95-100.5%	≥95%(ignited basis)
P2O5 Content ,%	--	52.5-54
Lead, ≤%	0.0004	0.0004
Water insoluble ,≤%	0.2	0.2
Fluoride, ≤%	0.005	0.001
Loss on Ignition	1,Anhydrous:≤0.5%; 2,Decahydrate 38-42%	1,Anhydrous ≤0.5% 2,Decahydrate 38% -42% 105°C,4h then 550°C30m)
As,≤%	0.0003	0.0003
Cadmium ≤%	--	0.0001
Mercury ≤%	--	0.0001