Sodium Sulfite
【English name】: Sodium Sulfite
【Molecular formula】: Na2SO3
【Physical and chemical properties】: White crystal or powder, PH: 9-9.5; density: 2.633(15.4℃); refractive index: 1.565; molecular weight: 126.04
【Executive standard】: HG/T2967-2010
| item | index | ||
| superior grade | top grade | qualified | |
| sodium sulfite (Na2SO3) %≥ | 98 | 97 | 96 |
| ferrum(Fe) %≤ | 0.003 | 0.003 | 0.005 |
| water insolubles%≤ | 0.01 | 0.02 | 0.03 |
| free alkali(Na2SO3) %≤ | 0.001 | 0.1 | 0.4 |
| sodium sulfate(Na2SO4) %≤ | 1.2 | 2.5 | 2.5 |
| chloride(Nacl) %≤ | 0.003 | 0.1 | 0.1 |
【Uses】:
As deoxidizing agent and bleaching agent in dyeing industry; as developing agent in photographic industry; as reducing agent in organic industry; also applied in paper-making, electronic and water treatment industry
【Packaging】: 25kg plastic woven bag
-
Next:None
- Back
-
Prev:Sodium bisulfite