Item Sodium Carbonate
(AR)
(Na2CO3)Assay, % 99.8
(N)Nitrogen compounds, % 0.001
(SiO3) 0.006
Phosphate and Silicate, %
(Fe)Iron, % 0.0005
(Pb)Heavy metals, % 0.0005
Clarity
Insoluble matter in water, % 0.01
(300degrees)Drying loss, % 1.0
(Cl)Chloride, % 0.002
(SO4)Sulfate compounds, % 0.005
(Mg)Magnesium, % 0.002
(Al)Aluminum, % 0.003
(K)Potassium, % 0.005
(Ca)Calcium, % 0.01
Sodium Carbonate
(AR)
(Na2CO3)Assay, % 99.8
(N)Nitrogen compounds, % 0.001
(SiO3) 0.006
Phosphate and Silicate, %
(Fe)Iron, % 0.0005
(Pb)Heavy metals, % 0.0005
Clarity
Insoluble matter in water, % 0.01
(300degrees)Drying loss, % 1.0
(Cl)Chloride, % 0.002
(SO4)Sulfate compounds, % 0.005
(Mg)Magnesium, % 0.002
(Al)Aluminum, % 0.003
(K)Potassium, % 0.005
(Ca)Calcium, % 0.01
Sodium Carbonate
| Names of index | index |
| Total alkali amount(Na 2 CO 3 Quality score plan) | ≥ 99.2 ~99.8% |
| sodium chloride(NaCl Quality score plan)content | ≤ 0.01 ~0.05% |
| Ferrum (Fe)Quality score plan | ≤ 0.0002 ~0.0010% |
| sulfate(SO 4 Quality score plan) | ≤ 0.02 ~0.04% |
| Water insoluble, quality score | ≤ 0.005 ~0.0150% |
| loss on ignition | ≤ 0.09 ~0.20% |
| bulk density(g/ml) | ≥ 1.10 ~1.25% |
| granularity, 180μ mresidue on sieve | ≥ 70.0% |