Result

Na₂SO₃  ω/%≥90.0%

93.12

Moisture  ω/%≤2.0%

0.96

Water Insoluble ω/%≤0.05%

0.03

Na2CO3  ω/%≤0.60%

0.42

Na2SO4  ω/%≤19.7%

7.21

Fe  ω/%≤0.01%

0.008

Specification

Result

  Na₂SO₃

97%

97.4

 Fe %

0.003

0.002

 Pb %

0.001

0.001

 As %

0.0001

0.0001

Water insoluble % ≤

0.02

0.01

  Na₂CO₃% ≤

0.1

0.09

Na₂SO₄ % ≤

2.5

1.1

NaCl % ≤

0.1

0.08

PH Value ≤

8-9

8.5

Appearance

White powder

White powder