Molecular Formula: Na2SO3
CAS No.: 7757-83-7
H.S. Code: 28321000
Appearance: White crystal/powder
Standard: GB1893-2008
Product Specification：
項 目 | 優等品 | 一等品 | 合格品 |
主含量（以Na2S2O5計），% | ≥ 97.0 | ≥96.0 | ≥93.0 |
鐵含量（以Fe計），% | ≤ 0.003 | ≤0.005 | ≤0.02 |
水不溶物含量，% | ≤ 0.02 | ≤0.03 | ≤0.05 |
游離堿（以Na2SO3計）% | ≤0.1 | ≤0.4 | ≤0.8 |
硫酸鈉（Na2SO4）% | ≤2.5 | / | / |
氯化鈉（NaCl），% | ≤ 0.1 | / | / |
Application:
Used as bleaching agent, preservative agent, bulking agent, antioxidant; pharmacyeutical synthesis; Used as a reducing agent in the production of dehydrated vegetables.
Storage: keep away from sunlight and moisture, store in ventilated dry place.