|
Item |
Top grade |
First grade |
Qualified product |
|
Mass fraction of total acidity (calculated by HCL)/% ≥ |
31.0 |
||
|
Mass fraction of iron (calculated as Fe)/% ≤ |
0.002 |
0.008 |
0.01 |
|
Mass fraction of burning residue meter/% ≤ |
0.05 |
0.10 |
0.15 |
|
Mass fraction of free chlorine (calculated as Cl)/% ≤ |
0.004 |
0.008 |
0.01 |
|
Mass fraction of arsenic/% ≤ |
0.0001 |
||
|
The mass fraction of sulfate ( calculated as SO4 2- )//% ≤ |
0.005 |
0.03 |
- |
|
Note: Arsenic Index is mandatory |
|||
Refined hydrochloric acid
|
No. |
Item |
Index |
|
1 |
Total acidity (calculated as HCl), ω/% ≥ |
31.0 |
|
2 |
Calcium (calculated as Ca) mg/L ≤ |
0.50 |
|
3 |
Magnesium (calculated as Mg) mg/L ≤ |
0.10 |
|
4 |
Iron (calculated as Fe) mg/L ≤ |
2.0 |
|
5 |
Manganese (calculated as Mn) mg/L ≤ |
1.0 |
|
6 |
Residue on Evaporation mg/L ≤ |
30.0 |
|
7 |
Free chlorine (calculated as Cl) mg/L ≤ |
40.0 |
