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Industrial Grade Sodium Metabisulfite



Quality Standard HG/T2826-2008

Item

Chinese standard

Company standard 

HG/T2826-2008

Top-grade

First grade

Main content(以Na2S2O5計(jì)),%

≥96.5

≥95.0

≥97.0

Fe (Fe),%

≤0.005

≤0.010

≤0.002

Water-Insoluble%

≤0.05

≤0.05

≤0.02

Arsenic(As) content%

≤0.0001

—

≤0.0001

Molecular Formula: Na2S2O5

Molecular weight:190.10

Appearance:White crystal powder




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