Name: Potassium carbonate(2).jpg)
Molecular formula: K2CO3
Molecular weight: 138.2
HS CODE: 28364000
Properties:
Colorless or white hexagonal or orthorhombic crystal or granular powder. Relative density is 2.662, inversion point is 588 ℃, melting point is 1069 ℃, boiling point is 1689 ℃. Soluble in water (12G／100ML water at 25 ℃, 24.1G／100ML water at 100 ℃), insoluble in alcohol, acetone and carbon disulfide.
Uses:
Potassium carbonate functions as raw material for producing electronic valve, television pictrue tube and glass shell of computer monitors.
Specification: industrial grade potassium carbonate (GB/T 1587-2000)
| Item | Unit | Superior grade | TV glass grade | First grade | Qualified grade |
| Assay (K2CO3 ) | % ≧ | 99.0 | 99.0 | 98.5 | 96.0 |
| Chloride (KCl) | % ≦ | 0.01 | 0.03 | 0.10 | 0.20 |
| Sulfur compound (K2SO4) | % ≦ | 0.01 | 0.04 | 0.10 | 0.15 |
| Iron | % ≦ | 0.001 | 0.001 | 0.003 | 0.010 |
| Water insoluble matter | % ≦ | 0.02 | 0.04 | 0.05 | 0.10 |
| Loss on ignition | % ≦ | 0.6 | 0.8 | 1.00 | 1.00 |
Specification: food additive potassium carbonate (HG2452-93)
| Item | Unit | Standard value |
| Potassium carbonate (K2CO3 ) | % ≧ | 99.0 |
| Chloride (KCl) | % ≦ | 0.01 |
| Sulfur compound (K2SO4) | % ≦ | 0.01 |
| Iorn | % ≦ | 0.001 |
| Water insoluble matter | % ≦ | 0.02 |
| Loss on ignition | % ≦ | 0.6 |
| Arsenic | % ≦ | 0.0003 |
| Heavy metal (Pb) | % ≦ |
0.002 |
Packing:
woven bag or plastic-plastic composite bag lined with plastic bag, net weight is 25／50／500／800／900／1000 KG.
Storage and transportation:
Keep in dry and well-ventilated warehouse. To protect from rain and damp. Separate from acids.
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