|
Item |
Company standard |
|
sodium sulfite (Na2SO3), mass fraction /% |
≥98.0 |
|
Fe, mass fraction /% |
≤0.001 |
|
Free alkali(As content Na2CO3), mass fraction /% |
≤0.05 |
|
Heavy metal content(Pb), mass fraction /% |
≤0.0001 |
|
As content (As content), mass fraction /% |
≤0.0001 |
|
Clarity |
Passed |