Sodium ulphite anhydrous | back |
Appearance : white crystalline powder .
Molecular formula : Na2SO3
CAS NUMBER :7757-82-6
Packing : double-layer plastic woven bag.
Uses : used in medicine, papermaking, tannage, leather, printing, dyeing, bleaching
and food .
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Index name
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Premium grade
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Super grade
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First grade
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Salable product
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Industrial grade
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Sodium sulphite ( Na2SO3 ) , % ≥
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97.0
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96.0
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93.0
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90.0
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Fe , ‰ ≤
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0.003
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0.005
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0.01
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/
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Water insoluble matter , % ≤
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0.02
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0.03
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0.05
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/
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Free alkali ( as Na2SO3 ) , % ≤
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0.10
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0.40
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0.60
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/
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Na2SO4 , % ≤
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2.50
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/
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/
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/
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NaCl , % ≤
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0.10
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/
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/
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/
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