Overview
High-purity lithium carbonate is produced by recrystallization, ion exchange and complexation purification, reaching 99.99%–99.999% main content. It is used in laser crystals, nonlinear optical crystals, specialty glass, optical fibers and high-purity reagents, with ppm-level limits on transition metals and anions.
- 5N / 4N5 grades
- Transition metals at ppm level
- Small batches with retained samples
Technical data
| Item | 5N | 4N5 |
|---|---|---|
| Li₂CO₃ / % min | 99.999 | 99.995 |
| Na / ppm max | 5 | 10 |
| K / ppm max | 2 | 5 |
| Fe / ppm max | 3 | 8 |
| Ca / ppm max | 5 | 10 |
| Mg / ppm max | 2 | 5 |
| Cl⁻ / ppm max | 10 | 30 |
| SO₄²⁻ / ppm max | 20 | 50 |
| Moisture / % max | 0.05 | 0.10 |
Impurity profiles can be tested to customer methods; a COA is supplied with each batch.
Reference standards
Standards and values are typical references. Supply is governed by the agreed technical protocol and the batch COA.
Main applications
Packaging and storage
Packaging
1 kg / 5 kg / 25 kg aluminum-foil lined bags; vacuum packing available.
Storage
Dry, clean environment; avoid cross-contamination.
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