Holmium oxide

Base Information

• Chemical Name: Holmium oxide
• CAS No.: 12055-62-8
• Molecular Formula: Ho2O3
• Molecular Weight: 377.86
• Hs Code.: 2846 90 20
• Mol file: 12055-62-8.mol

Synonyms:Holmium oxide (Ho2O3);Holmium(+3) cation; oxygen(-2) anion;Holmium(III) oxide;

Chemical Property of Holmium oxide

Chemical Property:

• Appearance/Colour: slightly beige solid
• Melting Point: >100 °C(lit.)
• PSA: 43.37000
• Density: 1.0966 g/mL at 25 °C
• LogP: -0.30600
• Storage Temp.: Storage temperature: no restrictions.
• Water Solubility.: Insoluble in water. Soluble in perchloric acids.

Purity/Quality:

99.0% ^*data from raw suppliers

Holmium(III) oxide (99.9%-Ho) (REO) ^*data from reagent suppliers

Safty Information:

• Safety Statements: 22-24/25

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• 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.
• 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). 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. Refractories, special catalyst.
• Physical properties: Yellow cubic crystal; density 8.41 g.cm3; melts at 2,415°C; insoluble in water; dissolves in acids (with reactions).

Technology Process of Holmium oxide

There total 3 articles about Holmium oxide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

holmium (13598-41-9,13967-65-2,14391-20-9,15125-75-4,15700-49-9,15749-97-0,15750-02-4,15832-34-5,7440-60-0) + dinitrogen monoxide (10024-97-2) → holmium monoxide (12055-62-8,12281-10-6,39455-61-3,62462-59-3,62462-60-6)

Guidance literature:

With methane; nitrogen; In gaseous matrix; byproducts: N2; Irradiation (UV/VIS); reaction between in situ produced gaseous metal and N2O/N2/CH4 mixt. flowing into reaction chamber held at const. temp. in range of 298-623 K under irradiation by laser at 248 nm; monitoring by LIF detrection; Kinetics;

DOI:10.1063/1.479336

Reference yield:

holmium(III) oxide → holmium (13598-41-9,13967-65-2,14391-20-9,15125-75-4,15700-49-9,15749-97-0,15750-02-4,15832-34-5,7440-60-0) + holmium monoxide (12055-62-8,12281-10-6,39455-61-3,62462-59-3,62462-60-6) + oxygen

Guidance literature:

vapor of the oxide studied at 1800-2000°C; detected by MS;

Reference yield:

holmium (13598-41-9,13967-65-2,14391-20-9,15125-75-4,15700-49-9,15749-97-0,15750-02-4,15832-34-5,7440-60-0) + oxygen (80937-33-3) → holmium monoxide (12055-62-8,12281-10-6,39455-61-3,62462-59-3,62462-60-6) + oxygen

Guidance literature:

In gaseous matrix; buffer gas (N2+CH4), heating (298-623 K); laser-induced fluorescence; Kinetics;

DOI:10.1021/jp991647c

upstream raw materials:

holmium

oxygen

dinitrogen monoxide

Refernces

• 1、 Ames, L. L.,Walsh, P. N.,White, D.. "". . p. 2707 - 2718. Retrieved 1967.