| ≥1 piece |
|
Items |
Index |
||
|
Superior quality |
First class |
qualified |
|
|
(Na5P3O10) % ≥ |
96 |
90 |
85 |
|
(P2O5) %≤ |
57.0 |
56.5 |
55.0 |
|
Water insoluble%≤ |
0.10 |
0.10 |
0.15 |
|
Fe %≤ |
0.007 |
0.015 |
0.30 |
|
PH value (1% solution) |
9.2-10.0 |
|
|
|
Whiteness %≥ |
90 |
80 |
70 |
|
Granularity 1.00mm reside in sieve %≤ |
5.0 |
|
|