Holmium(III) oxide (Ho<sub>2</sub>O<sub>3</sub>) 99.99% 4N Powder,  MSE Supplies LLC

Holmium(III) oxide (Ho2O3) 99.99% 4N Powder

  • $ 18500

Holmium(III) oxide, Ho2O3, 99.99% 4N High Purity Powder

  • Product Number: PO3901 (50 g), PO3902 (100 g), PO3903 (1 kg)
  • Formula: Ho2O3
  • CAS Number: 12055-62-8
  • Molecular Weight: 377.858  g/mol
  • Density: 8.41 g/cm³ at 25°C
  • Melting Point: 2415°C
  • Color: Light yellow powder
  • Solubility: Insoluble in water.
  • Purity: 99.99% 4N (Ho2O3/TREO*)
* TREO - Total Rare Earth Oxides


    Holmium(III) oxide, Ho2O3 is one of the colorants used for cubic zirconia and glass, providing yellow or red coloring. Glass containing holmium oxide and holmium oxide solutions (usually in perchloric acid) have sharp optical absorption peaks in the spectral range 200-900 nm. They are therefore used as a calibration standard for optical spectrophotometers and are available commercially. As most other oxides of rare-earth elements, holmium oxide is used as a specialty catalyst, phosphor and a laser material. Holmium laser operates at wavelength of about 2.08 micrometres, either in pulsed or continuous regime. This laser is eye safe and is used in medicine, lidars, wind velocity measurements and atmosphere monitoring.

    Notes: More detailed product information including SDS, certificate of analysis (COA), lead time and volume pricing are available upon request. 

    Rare Earth Impurities Content (ppm)

    Non- Rare Earth Impurities Content (ppm)

    Gd2OEu2OSm2ONd2OPr6O11 La2O3 CeO2   

    Total <10.0

    Fe2O3   <5.0

     Tb4O7   <10.0

    SiO2   <30.0

     Dy2O3   <20.0

    CaO    <20.0

     Er2O3   <20.0

    Cl-   <200.0

     Tm2O3   <10.0

    Na2O <20.0

     Yb2O3   <10.0

    Others <10.0

     Lu2O3   <10.0

     Y2O3   <10.0



     1. Blue, green and red upconversions in Ho2O3-doped fluorophosphate glasses, J. Non-Cryst. Solids, Volume 353, Issues 13–15, 15 May 2007, Pages 1377-1382

     2. Influence of Ho2O3 on Optimizing Nanostructured Ln2Te6O15 Anti‐Glass Phases to Attain Transparent TeO2‐Based Glass‐Ceramics for Mid‐IR Photonic Applications, Adv. Eng. Mater., 22: 190135

     3. Preparation and characterization of transparent magneto‐optical Ho2O3 ceramics. J Am Ceram. Soc. 2019; 102: 118– 122