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Product Deail
Potassium carbonate
【Another name】Potash.
【Description】White granule or powder, hygroscopic, can absorb carbon dioxide and water when exposed to air, convert to potassium bicarbonate, relative density 2.428, melting point 891℃. Soluble in water, aqueous solution is alkaline, insoluble in ethanol and ether.
|
Test items |
GR |
AR |
CP |
Other |
|
Assay(K2CO3) /% |
≥99.5 |
≥99.0 |
≥98.0 |
Custom |
|
Clarity of solution /# |
≤2 |
≤3 |
≤5 |
|
|
Water insoluble /% |
≤0.005 |
≤0.005 |
≤0.03 |
|
|
Loss on ignition /% |
≤0.8 |
≤1.0 |
≤2.0 |
|
| Chloride(Cl) /% |
≤0.001 |
≤0.003 |
≤0.01 |
|
|
Sulfur compounds(as SO4) /% |
≤0.002 |
≤0.003 |
≤0.01 |
|
|
Total nitrogen(N) /% |
≤0.001 |
≤0.001 |
≤0.01 |
|
|
Phosphates and silicates(as SiO2) /% |
≤0.004 |
≤0.005 |
≤0.02 |
|
| Sodium(Na) /% |
≤0.02 |
≤0.05 |
≤0.10 |
|
| Magnesium(Mg) /% |
≤0.000 5 |
≤0.002 |
≤0.005 |
|
|
Aluminum(Al) /% |
≤0.005 |
- |
- |
|
|
Calcium(Ca) /% |
≤0.002 |
≤0.002 |
≤0.02 |
|
| Iron(Fe) /% |
≤0.000 5 |
≤0.000 5 |
≤0.002 |
|
| Copper(Cu) /% |
≤0.000 5 |
≤0.000 5 |
≤0.001 |
|
| Arsenic(As) /% |
≤0.000 05 |
- |
- |
|
| Lead(Pb) /% |
≤0.000 5 |
≤0.000 5 |
≤0.001 |
【Use】Used as analytical reagent; reference reagent; silicate solvents; carbon dioxide gas adsorbent; preparation of potassium salt; food additives; pharmaceutical excipients; glass products; desiccant.
