|
Item |
Spc | ||
|
superior |
Fist class |
Qualify class | |
|
Appearance |
White crystle | ||
|
Content，% ≥ |
97.0 |
95.0 |
93.0 |
|
NaOH，% ≤ |
0.50 |
0.50 |
1.00 |
|
Na2C03，% ≤ |
1.30 |
1.50 |
2.00 |
|
NaCL，% ≤ |
0.50 |
1.50 |
3.00 |
|
Na2S，% ≤ |
0.06 |
0.08 |
0.10 |
|
Moisture，% ≤ |
0.50 |
1.00 |
1.5 |
|
PH |
7-8 |
7.5 |
7.0 |
