Sodium bisulfite
CAS:7631-90-5
Molecular formula：HNaO3S
Molecular Weight:104.06
Chemical formula: NaHSO3
Appearance and properties : White crystalline powder，the smell
of sulfur dioxide
Main ingredients content: 99.5% industrial grade or higher
  Application: used as a bleaching agent, mordant, vegetable
dehydration and preservatives, photographic reductant, medicine,
electroplating, papermaking, etc. Rinse aid
　pH：4.0-5.0
Solubility: soluble in water, slightly soluble in alcohol, ether.