轻碱

指标项目

Items

指标值

Standard Values

实测值

Actual Values

外观

Outward

白色结晶粉末

White crystalline powder

白色结晶粉末

White crystalline powder

总碱量（以干基的Na₂CO₃的质量分数计）%

Total alkalinity (measured by the mass fraction of dry base Na₂CO₃)

≥99.2

99.6

总碱量（以湿基的Na₂CO₃计的质量分数计）%

Total alkalinity (measured by the mass fraction of wet base Na₂CO₃) %

≥97.9

99.3

氯化钠（以干基的NaCl的质量分数计）%

Sodium chloride (measured by the mass fraction of dry base NaCl) %

≤0.70

0.28

铁（Fe）的质量分数（干基计）/%

measured by the mass fraction of Fe (dry base) /%

≤0.0035

0.0026

硫酸盐（以干基的SO₄的质量分数计）/%

Sulfate ( measured by the mass fraction of dry base SO₄) /%

≤0.03

0.01

水不溶物的质量分数/%

Mass fraction of water insoluble matter /%

≤0.03

0.01