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By certification 
Product Name: Sodium sulfite anhydrous
Category: Inorganic chemical/inorganic salt
CAS NO: 7577-83-7
Molecular Formula: Na2S2O3
H.S code: 283210 0000
Specifications:
| Item | |||
| Best Quality | First grade quality | Qualifier | |
| Sodium sulfite (dry basis)% | ≥ 97.0 | ≥ 96.0 | ≥ 93.0 |
| Fe% | ≤ 0.003 | ≤ 0.005 | ≤ 0.02 |
| nsol. in water% | ≤ 0.02 | ≤ 0.03 | ≤ 0.05 |
| Free alkali (Na2SO3) Assay % | ≤ 0.10 | ≤ 0.40 | ≤ 0.80 |
| Sulphate (Na2SO4) Assay % | ≤2.5 | — | — |
| Chlorides (NaCl) Assay % | ≤2.1 | — | — |
Molecular Weight: 126.04
Packing: 25kg plastic woven bag, 50kg/500kg/1000/1250kg pp woven bags / According to the customer's requests
Appearance: white or yellowish crystal.
Use: Used as deoxidant and bleaching agent for printing & dyeing industry; also used for paper making,
electronic and water treatment industries.
