Back ProductAnhydrous Sodium Sulfite
CAS NO.：7757-83-7
Molecular Formula：Na2SO3
Structural Formula：
Molecular Weight：126.04
Appearance：White crystal or powder
Use：Medicinal excipients, Antioxidants。
Packing：25kg/Drum
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CAS NO.：7631-90-5
Molecular Formula：NaHSO3
Structural Formula：
Molecular Weight：104.06
Appearance：White particles or crystalline powder.
Use：Medicinal excipients, Antioxidants。
Packing：25kg/Drum
Specification Standard：Pharmacopoeia of the people's Republic of China, 2020 Edition (Volume 4)
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Item
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Index
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Appearance
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White particles or crystalline powder；A slight odor of sulfur dioxide.
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Assay（As SO2）
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61.5%～67.4%
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Ferric salt
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≤10ppm
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Sulfates
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≤4.0%
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Heavy metals
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≤10ppm
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Arsenic
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≤1ppm
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Phenylhydrazine