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Certificate of Analysis
Product Name: Sodium sulfite Catalogue Number: GR-24437
Batch Size: N/A Lot Number: 20230404
CAS Number: 7757-83-7 Production Date:
Molecular Formula: Na2O3S Report Date: 2023-04-04
Molecular Weight: 126.05 Expiry Date:
Storage: Room temperature, Protected from light and Sealed


Test Items Specifieation Results
Appearance White or Colorless powder to crystal Complies
Purity ≥96% 96. 36%
Fe ≤0. 005% 0. 005%
Water insoluble matter ≤0.03% 0.03%
Free alkali (as Na₂SO₃) ≤0.10 0.1
Sulfate (as Na₂SO₃) ≤2.5 2.31
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