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Sodium sulfite anhydrous

Chemical Name Sodium sulfite anhydrous
CAS Number 7757-83-7
Product Number SW000035
Molecular Formula Na2O3S
Molecular Weight 126.0427
Appearance : white crystalline powder .
Molecular formula : Na2SO3
Packing : double-layer plastic woven bag.
Uses : used in medicine, papermaking, tannage, leather, printing, dyeing, bleaching and food .
Quality standard : Q/320124JM02-2003
Index name Premium grade
Super grade First grade Salable product Industrial grade
Sodium sulfite ( Na2SO3 ) , % ≥ 97.0 96.0 93.0 90.0
Fe , ?≤ 0.003 0.005 0.01 /
Water insoluble matter , % ≤ 0.02 0.03 0.05 /
Free alkali ( as Na2SO3 ) , % ≤ 0.10 0.40 0.60 /
Na2SO4 , % ≤ 2.50 / / /
NaCl , % ≤ 0.10 / / /

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