|
ITEM
|
INDEX
|
||
|
Excellent
|
I Grade
|
Acceptable
|
|
|
Na5P3O10 %≥
|
96
|
90
|
85
|
|
P2O5 %≥
|
57.0
|
56.5
|
55.0
|
|
Water insoluble content %≤
|
0.10
|
0.10
|
0.15
|
|
Fe %≤
|
0.007
|
0.015
|
0.030
|
|
PH Value
|
9.2-10.0
|
||
|
Whiteness %≥
|
90
|
80
|
70
|
|
Fineness (1.00mm sieve reside)% ≤
|
5.0
|
||
Package: 25kg in plastic woven bag with polythene liner