Item

Index %

Inspection

Result %

Total Alkali(Quality Fraction of Na_HCO₃ Dry Basis)%≥

99.0-100.5

100.02

Lost of Ignition   %    ≤

0.2

0.08

PH 90(10g /L ) ≤

8.3

8.2

NaCl (Quality Fraction of Cl Dry Basis) % ≤

0.20

0.13

Iron（dry mass fraction of Fe）% ≤

0.001

0.0008

Water insoluble matter mass fraction % ≤

0.01

0.004

As Quality Fraction(Dry Basis) % ≤

0.0001

<0.0001

Pb Quality Fraction(Dry Basis)      % ≤

0.0005

<0.0005

Ca Quality Fraction(Dry Basis)      % ≤

0.03

<0.03

Sulfate（SO₄ dry basis of the mass fraction）

0.02

0.005