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Molecular formula: K2CO3
Molecular weight: 138.21
CAS NO: 584-08-7
[Character] White powder or granule, relative density of 2.428, melting point of 891℃, easy to deliquesce, soluble in water solution and alkaline, insoluble in ethanol and ether.
[To use] Used as an analytical reagent, such as a reference reagent, silicate flux, carbon dioxide gas absorbent, and preparation of potassium salt.
[Standard]
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Specification
Name of index
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Analytically pure-AR |
Chemically pure-CP |
| Content(K2CO3) /% |
≥99.0 |
≥98.0 |
| Clarity test |
Qualified |
Qualified |
| Loss on drying |
1.0 |
2.0 |
| Water insolubles |
≤0.005 |
≤0.03 |
| Chloride(Cl) |
≤0.003 |
≤0.01 |
| Sulfur compounds(SO4) |
≤0.003 |
≤0.01 |
| Total nitrogen(N) |
≤0.001 |
≤0.01 |
| Phosphate and silicate(SiO3) |
≤0.005 |
≤0.02 |
| Sodium(Na) |
≤0.05 |
≤0.1 |
| Magnesium(Mg) |
≤0.002 |
≤0.005 |
| 铜(Cu) |
≤0.0005 |
≤0.001 |
| Calcium(Ca) |
≤0.002 |
≤0.02 |
| Ferrum(Fe) |
≤0.0005 |
≤0.002 |
| Lead(Pb) |
≤0.0005 |
≤0.001 |
[Packing] Plastic inside and outside woven, kraft paper bag or cardboard bucket, net weight 25kg.
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