sodium sulfite/sulphite, white or light yellow crystalline powder, purity97%min, used as dechlorinating agent, bleaching agent, developer, reductant, stabilizer, or in papermaking, electronic and water treatment industry.
specifications:
|
Item |
Value |
|
Sodium sulfite (Na2SO3 ), mass fraction /% |
≥97. 0 |
|
Fe, mass fraction /% |
≤0. 01 |
|
Free alkali(as Na2SO3), mass fraction /% |
≤0. 60 |
|
Heavy metals(as Pb), mass fraction /% |
≤0. 001 |
|
As (As), mass fraction /% |
≤0. 0002 |
|
Clarity |
passed |