

CAS No.: 12061-16-4
Molecular Weight: 382.56
Density: 8.64 g/cm3
Melting point: 2344° C
Appearance: Pink powder
Solubility: Insoluble in water, moderately soluble in strong mineral acids
Multilingual: ErbiumOxid, Oxyde De Erbium, Oxido Del Erbio
Erbium oxide (Er2O3) has several notable applications across various fields:
1. Fiber Optics and Telecommunications:
Erbium oxide is used as a dopant in fiber-optic cables. It significantly improves the quality and range of signals in telecommunications. The doping of optical fibers with erbium oxide allows for the direct amplification of light signals, enhancing long-distance communication efficiency.
3. Electronic Devices:
Erbium oxide is utilized in some electronic devices, particularly those requiring specific dielectric properties. It can also be used in semiconductor devices.
4. Colorants and Pigments:
The distinct pink color of erbium oxide makes it suitable as a colorant in various artistic and industrial applications.
5. Laser Materials:
These diverse applications underscore the importance of erbium oxide in modern technology and industry.


Test Item | Standard | Results |
Nd2O3/TREO | ≥99.9% | >99.95% |
Main Component TREO | ≥99% | 99.62% |
RE Impurities (%/TREO) | ||
La2O3 | ≤0.01 | 0.001 |
CeO2 | ≤0.01 | 0.002 |
Pr6O11 | ≤0.03 | 0.007 |
Sm2O3 | ≤0.01 | 0.002 |
Y2O3 | ≤0.01 | 0.001 |
Non-RE Impurities (%) | ||
Fe2O3 | ≤0.002 | 0.0003 |
SiO2 | ≤0.005 | 0.003 |
CaO | ≤0.01 | 0.004 |
Al2O3 | ≤0.02 | <0.01 |
Cl- | ≤0.02 | 0.007 |
SO4-2 | ≤0.02 | 0.003 |
L.O.I. | ≤1 | 0.22 |
Conclusion | Comply with above standard. |

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