huizhong

Alias: Sodium pyrosulfite <br />
Name in English: Sodium Metabisulfite<br />
Molecular formula: Na2S2O5    <br />
Molecular weight: 190.10<br />
Appearance: White or yellowish crystal powder <br />
Quality standard: HG/T 2826-2008


 <br />
ItemIndex<br />
SuperiorFirst class<br />
Main content (Na2S2O5   ), % ≥96.595<br />
Iron (Fe),  % ≤0.0050.01<br />
Water-insoluble,  % ≤0.050.05<br />
Arsenic (As),  % ≤0.0001-<br />
 <br />
Applications: <br />
  Printing and dyeing mordant;<br />
  Antichlor in after fabric bleaching;<br />
  Chemical and medicine reducer and sulfonating agent;<br />
  Bleaching agent of bamboo, wood and paper fiber;<br />
  Nonferrous metal dressing agent; waste water finishing agent;<br />
  Rubber coagulator; alkyl spice aldehyde in spice industry;<br />
  Depilating agent, softening agent and anti-wear agent in leather industry;<br />
Reducer of developer and protective agent of fixative in sensitization industry.<br />