Na4O
: Properties:, relative density is 1.62, melting point is 73.3 to 76.7 centigrade, it becomes sodium phosphate anhydrous . It is easy to Standard executedGB 25565-2010
Specification |
Tech grade |
High purity grade |
|
Appearance |
White or colorless crystal powder |
||
Main contents |
%≥ |
|
|
|
%≥ |
18.10 |
18.30 |
PH value of 1 |
- |
11.5-12.5 |
11.5-12.5 |
Arsenic, as As |
%≤ |
0.005 |
0.0003 |
|
%≤ |
0.005 |
0.003 |
Heavy metal, as Pb |
%≤ |
0.003 |
0.001 |
Lead, as P |
%≤ |
- |
0.0004 |
|
%≤ |
|
|
Loss on drying |
%≤ |
45-57 |
45-57 |