sodium carbonate manufacture

ITEMS

SPECIFICATIONS

TESTING  RESULT

TOTALALKALICONTENT%

99.2 MIN

99.38

CHLORIDE (NACL)%

0.70 MAX

0.55

SULFATE (SO4) %

0.03 MAX

0.02

IRON (FE2O3) %

0.0035 MAX

0.0008

WATER INSOLUBLEMATTER%

0.03 MAX

0.01

Inspecting item

Index

Result

Method of calibration

Surface

White fine particles

GB/T210-2022 6.1

Total base amount

(in Na₂CO₃, in dry base)w/%≥

99.4

99.74

GB/T210-2022 7.3

Total base amount

(in Na₂CO₃, in wet base)o/%≥

98.1

99.60

Sodium chloride

(in NaCl, in dry base)o/%≤

0.30

0.20

GB/T210-2022 7.4.2

Iron

(Fe, measured as dry base)w/%≤

0.0025

0.0005

GB/T210-2022 7.5.1

Water-insoluble w/%≤

0.02

0.011

GB/T210-2022 7.7.2

Stacking density/(g/mL)≥

0.85

1.13

GB/T210-2022 7.9

Particle size,180um sieveresiduew/%≥

75.0

90.4

GB/T210-2022 7.10