Product Name: Anhydrous sodium carbonate level: AR / CP
Implementation of the standards: GB / T 639-2008
Molecular formula: Na2CO3
This reagent as a colorless powder, water is exposed to air gradually become a hydrate, soluble in water, soluble in ethanol.
Items | Indicators | |
AR | CP | |
content(Na2CO3),W/% ≥ | 99.8 | 99.8 |
Clarity test / number ≤ | 3 | 4 |
Water insoluble matter，W/% ≤ | 0.01 | 0.02 |
Loss on ignition（300℃），W/% ≤ | 1.0 | 1.0 |
chloride（Cl），W/% ≤ | 0.002 | 0.005 |
Sulfur compounds（SO4），W/% ≤ | 0.005 | 0.01 |
Total nitrogen content(N), W/% ≤ | 0.001 | 0.002 |
Phosphate and silicate (SiO3 to count)，W/% ≤ | 0.006 | 0.013 |
magnesium（Mg）, W/% ≤ | 0.002 | 0.005 |
aluminum （Al）, W/% ≤ | 0.003 | 0.01 |
Potassium(K) , W/% ≤ | 0.005 | 0.02 |
calcium(Ca) , W/% ≤ | 0.01 | 0.02 |
iron(Fe) , W/% ≤ | 0.0005 | 0.001 |
Heavy Metals (as Pb), W/% ≤ | 0.0005 | 0.001 |