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Holmium Oxide

CAS No.
12055-62-8
Chemical Name:
Holmium Oxide
Synonyms
Rare earth;HOLMIUM(III) OXIDE;Holmia;HOLMIUM OXIDE;La-Ce-Tb Oxide;mium(III) oxide;HOLMIUM(+3)OXIDE;Holmium(Ⅲ) oxide;Holmium trioxide;UV-VIS STANDARD 6
CBNumber:
CB0216119
Molecular Formula:
H2HoO
Molecular Weight:
182.95
MDL Number:
MFCD00011053
MOL File:
12055-62-8.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-08-11 17:42:56

Holmium Oxide Properties

Melting point >100 °C(lit.)
Density 1.0966 g/mL at 25 °C
storage temp. no restrictions.
solubility DMSO (Slightly, Heated), Methanol (Slightly, Heated), Water (Slightly, Heated)
form nanopowder
color Light yellow-orange to beige
Specific Gravity 8.36
Water Solubility Insoluble in water. Soluble in perchloric acids.
Specific Heat Capacity Cp(crystal): 0.63 J/(g·K), at 25℃
Crystal Structure Sc2O3 type
crystal system Cube
Merck 14,4727
Space group Ia3
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
1.060831.060831.060839090901.1938
Stability Stable, but may be air or moisture sensitive. Incompatible with strong acids.
InChI 1S/2Ho.3O
InChIKey JYTUFVYWTIKZGR-UHFFFAOYSA-N
SMILES O=[Ho]O[Ho]=O
CAS DataBase Reference 12055-62-8(CAS DataBase Reference)
FDA UNII 6A1MAM6A4J
EPA Substance Registry System Holmium oxide (Ho2O3) (12055-62-8)
UNSPSC Code 41116107
NACRES NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H227
Precautionary statements  P501-P210-P280-P370+P378-P403+P235
PPE Eyeshields, Gloves
Safety Statements  22-24/25
WGK Germany  3
3-10-23
TSCA  TSCA listed
HS Code  2846 90 20
Storage Class 11 - Combustible Solids
NFPA 704
0
1 0

Holmium Oxide price More Price(66)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 229679 Holmium(III) oxide powder, 99.999% trace metals basis 12055-62-8 1g $98.1 2026-04-30 Buy
Sigma-Aldrich 229679 Holmium(III) oxide powder, 99.999% trace metals basis 12055-62-8 10g $637 2026-04-30 Buy
Sigma-Aldrich 1.12469 Holmium(III) oxide LAB 12055-62-8 2g $95.3 2026-04-30 Buy
Sigma-Aldrich 1.12469 Holmium(III) oxide LAB 12055-62-8 5G $146 2026-04-30 Buy
Sigma-Aldrich 637327 Holmium(III) oxide nanopowder, <100?nm avg. part. size (DLS), ≥99.9% trace metals basis 12055-62-8 50g $840 2023-06-20 Buy
Product number Packaging Price Buy
229679 1g $98.1 Buy
229679 10g $637 Buy
1.12469 2g $95.3 Buy
1.12469 5G $146 Buy
637327 50g $840 Buy

Holmium Oxide Chemical Properties,Uses,Production

Description

Holmium oxide occurs in nature, usually associated with small quantities of other rare-earth oxides. Commercial applications of this compound have not been explored fully. It is used in refractories and as a catalyst. Characteristic spectral emission lines of holmium oxide glass are used to calibrate spectrophotometers.

Chemical Properties

Holmium oxide (Ho2O3), also known as Holmia, is a light yellow powder that is one of the most paramagnetic substances known.
Holmium oxide
Holmium oxide glass has been used as a wavelength standard for over four decades. It has a number of desirable features that have made it a commonly used wavelength standard. It does not induce a slit positioning error as atomic emission lamps may. It is also compact, easy to use, and most importantly, stable over long periods of time.the use of filters made of holmium oxide glass allows the calibration of wavelength for a spectrophotometer over a broad range.

Uses

Holmium(III) oxide acts as colorants which is used for cubic zirconia and glass, as a calibration standard for optical spectrophotometers, as a specialty catalyst, phosphor and a laser material.
Holmium Oxide, also called Holmia, has specialized uses in ceramics, glass, phosphors and metal halide lamp, and dopant to garnet laser. Holmium can absorb fission-bred neutrons, it is also used in nuclear reactors to keep atomic chain reaction from running out of control. Holmium Oxide is one of the colorants used for cubic zirconia and glass, providing yellow or red coloring.
It is also used in Yttrium-Aluminum-Garnet (YAG) and Yttrium-Lanthanum-Fluoride (YLF) solid-state lasers found in microwave equipment (which are in turn found in a variety of medical and dental settings).

Preparation

Holmium oxide is prepared by thermal decomposition of carbonate, oxalate, hydroxide, nitrate, sulfate, or any oxo salt of holmium:
Ho2(CO3)3 →Ho2O3 + 3CO2
Ho2(SO4)3 →Ho2O3 + 3SO3
The oxide may be obtained by direct combination of elements at elevated temperatures. The element in massive form, however, reacts slowly at high temperatures.

Chemical Properties

slightly beige solid

Physical properties

Yellow cubic crystal; density 8.41 g.cm3; melts at 2,415°C; insoluble in water; dissolves in acids (with reactions).

Uses

Holmium(III) oxide iacts as colorants which is used for cubic zirconia and glass, as a calibration standard for optical spectrophotometers, as a specialty catalyst, phosphor and a laser material.

Uses

Refractories, special catalyst.

Application

Holmium Oxide can be used as:

  • A starting material to prepare Ho2O3-PVAfilm for generating stable Q-switching pulses in a thulium-doped fiber laser(TDFL) cavity.
  • A catalyst for oxidative coupling of methane.
It can also be used as a dopant in the preparation of:
  • Cadmium lead borate glasses.
  • Diamond/copper composites to eliminate interfacial defects through the spark plasma sintering (SPS) method.

reaction suitability

reagent type: catalyst
core: holmium

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View Lastest Price from Holmium Oxide manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Holmium Oxide (Ho2O3) pictures 2026-09-10 Holmium Oxide (Ho2O3)
12055-62-8
$1256.00 1kg 99.9%; 99.99%; 99.999% 20 tons Shanghai Sheeny Metal Materials Co.,Ltd
Holmium Oxide pictures 2025-11-21 Holmium Oxide
12055-62-8
$71.00-14000.00 1000kg 99% 20T per month Shanghai Shunli Industry Co., Ltd
Holmium Oxide pictures 2024-12-24 Holmium Oxide
12055-62-8
$100.00-160.00 1kg 99.99% 10 tons per month CHENGDU BEYOND CHEMICAL CO.,LTD.
  • Holmium Oxide pictures
  • Holmium Oxide
    12055-62-8
  • $71.00-14000.00
  • 99%
  • Shanghai Shunli Industry Co., Ltd
  • Holmium Oxide pictures
  • Holmium Oxide
    12055-62-8
  • $100.00-160.00
  • 99.99%
  • CHENGDU BEYOND CHEMICAL CO.,LTD.
UV-VIS STANDARD 6 UV-VIS STANDARD 6: HOLMIUM OXIDE SOLUTION HOLMIUM(+3)OXIDE HOLMIUM OXIDE HOLMIUM OXIDE, 99.99% (RE Element base) Holmium(III) oxide, REacton (REO) Holmium (III) oxide 99.9% HolMiuM(III) oxide, -325 Mesh HolMiuM(III) oxide, 99.9%, (trace Metal basis), -325 Mesh HolMiuM(III) oxide, 99.9%, (Total Rare Earth Oxides), -325 Mesh HOLMIUM(III) OXIDE LAB 2 G HOLMIUM(III) OXIDE LAB 5 G Holmium(Ⅲ) oxide HolMiuM(III) oxide >=99.9% (rare earth content, expressed as Ho2O3) Holmium(III) oxide powder, 99.999% trace metals basis Holmium(III) oxide, 99.9% trace rare earth metals basis Holmium(III) oxide, 99.99% trace rare earth metals basis Holmium(III) oxide powder (Ho2O3) HOLMIUM OXIDE, 99.9%HOLMIUM OXIDE, 99.9%HOLMIUM OXIDE, 99.9%HOLMIUM OXIDE, 99.9% HOLMIUM OXIDE, 99.99%HOLMIUM OXIDE, 99.99%HOLMIUM OXIDE, 99.99%HOLMIUM OXIDE, 99.99% nm 99.5%Holmium Oxide um 99.9%Holmium Oxide HOLMIUM OXIDE, 99.9% HOLMIUM(III) OXIDE, NANOPARTICLES, 99.9& HOLMIUM OXIDE, 99.999% HOLMIUM(III) OXIDE, NANOPOWDER, <100NM (BET), 99.9+% Holmia Holmium(III) oxide, 99.9%, -325 mesh HOLMIUM OXIDE NANO-DISPERSION HOLMIUM OXIDE, 99.99% Holmium (III) oxide (99.9%-Ho) (REO) HolmiumoxideREOwhitepowder holmium(iii) oxide preparation holmium(iii) oxide, reacton HOLMIUM(III)OXIDE,POWDER Holmium(III) oxide, REacton(R), 99.99% (REO) Holmium(III) oxide, 99.9% (REO) Holmium(III) oxide, REacton(R), 99.9% (REO) Holmium(III) oxide, REacton(R), 99.995% (REO) Holmium trioxide La-Ce-Tb Oxide holmiumoxide(ho2o3) Super-purity RE Oxide Holmium oxide, 99.999% (REO) Holmium(III) oxide, REacton, 99.9% (REO) Holmium(III) oxide, REacton, 99.99% (REO) Holmium(III) oxide, REacton, 99.995% (REO) Holmium(III) oxide, dispersion arsanylidynethallium Holmium(III) oxide, 99.99%, trace metals basis HolmiumOxideSolution,30mL40,000mg/Lin10%HClO4 Holmium(III) oxide,99.99% Holmium oxide,99.95% mium(III) oxide Holmium Oxide ISO 9001:2015 REACH Holmium oxide, GR 99.99% Holmium(III) oxide AR 10GM Holmium oxide, 99.995%