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High purity Barium carbonate CAS: 513-77-9 Formular: BaCO3 White powder Application: 1.used for ceramic coating and the optical glass of excipients used in electronic ceramics , the manufacture of a variety of electronic components of the PTC thermistor , capacitor, etc 2. For the separation of aluminum . Catalyst. The production of electronic ceramics and water purification , production of pigments, paints or other barium salts used in making optical glass , barium magnetic materials is an important chemical raw materials for the production of CRT glass , magnetic materials and advanced optical glass |
| Item | Special grade | 1st grade | 2nd grade | |
| Main content(on BaCO3 basis) | 99.2% | 99% | 98.5% | min |
| Moisture | 0.3% | 0.3% | 0.3% | max |
| Total sulphur(on SO4 basis) | 0.25% | 0.35% | 0.45% | max |
| HCI insoluble matters | 0.15% | 0.25% | 0.50% | max |
| Iron (on Fe basis) | 0.004% | 0.004% | 0.008% | max |
| Chloride(on CL basis) | 0.01% | --- | --- | max |
| Fineness | ||||
| residue on 125um sieves | 0.20% | 0.30% | 0.50% | max |
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