Holmium Oxide

Holmium Oxide

CAS #: 12055-62-8
Linear Formula: Ho2O3
EC No.: 235-015-3

Product Details

Holmium oxide is a yellow powder, molecular formula Ho2O3, insoluble in water and soluble in acid. The color change of holmium oxide was significant under light conditions. Light yellow in sunlight, strong orange-red in trichromatic light source, almost indistinguishable from erbium oxide in the same light, which is related to its sharp phosphorescent emission band. Holmium oxide has a band gap up to 5.3 eV wide and, therefore, should be colourless. The yellow of holmium oxide is the result of numerous lattice defects such as oxygen vacancy and internal conversion of Ho3+.

Holmium Oxide

Product Series

ProductProduct Code

Safety Data

Technical Data

Holmium Oxide 99.5%


Holmium Oxide 99.9%ET-Ho-02TIM图片20180524114629_副本(001)
Holmium Oxide 99.99%ET-Ho-03TIM图片20180524114629_副本(001)

Properties (Theoretical)

Compound FormulaHo2O3
Molecular Weight377.86
AppearanceLight yellow
Melting Point2415 °C (4379 °F)
Boiling Point3900 °C (7052 °F)
Density3.79 g/cm3
Exact Mass377.845 g/mo
Monoisotopic Mass377.845344 Da

Health & Safety Information

Signal WordN/A
Hazard StatementsN/A
Hazard CodesN/A
Precautionary StatementsN/A
Flash PointNot applicable
Risk CodesN/A
Safety StatementsN/A
Transport InformationNONH for all modes of transport
WGK Germany3

Packaging Specifications

Finished packaging: 50 kg / barrel, 500 kg / tray, ton bag packaging

Sample packaging: 500 g / bag, 1 kg / bottle


Holmium oxide can be used as a yellow and red stain for artificial diamonds and glass. Glass containing holmium oxide and holmium oxide solutions (often perchloric acid solutions) have sharp absorption peaks in the range of 200 to 900nm, so they can be used as calibration criteria for spectrometers. Like other rare earth elements, holmium oxide is also used as a special catalyst, phosphor and laser material. The wavelength of holmium laser is approximately 2.08 modis m, either pulse or continuous light. The laser is harmless to the eye and can be used in medicine, optical radar, wind speed measurement and atmospheric monitoring.

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