PRODUCT Properties
| Melting point: | 1474 °C |
| Boiling point: | 2695 °C |
| Density | 8.8 g/mL at 25 °C (lit.) |
| solubility | soluble in dilute acid solutions |
| form | ingot |
| Specific Gravity | 8.795 |
| color | Silver-gray |
| Water Solubility | reacts slowly with H2O, soluble dilute acids [HAW93] |
| Sensitive | Air & Moisture Sensitive |
| Merck | 13,4747 |
| Exposure limits | ACGIH: TWA 2 ppm; STEL 4 ppm OSHA: TWA 2 ppm(5 mg/m3) NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3) |
| CAS DataBase Reference | 7440-60-0(CAS DataBase Reference) |
| EPA Substance Registry System | Holmium (7440-60-0) |
Description and Uses
Holmium has the highest magnetic moment (10.6uB) of any naturally occurring element. Because of this it has been used to create the highest known magnetic fields by placing it within high strength magnets as a pole piece or magnetic flux concentrator.
This magnetic property also has value in Yttrium-Iron-Garnet (YIG) lasers for microwave equipment.
Holmium lasers emit at a human eye safe 2.08 microns allowing its use in a variety of medical and dental applications in both Yttrium-Aluminum-Garnet (YAG) and Yttrium-Lanthanum-Fluoride (YLF) solid state lasers. The wavelength allows for use in silica fibers designed for shorter wavelengths while still providing the cutting strength of longer wave length equipment.
Holmium is one of the colorants used for cubic zirconia and glass, providing yellow or red coloring.
Holmium Metal, is mainly used for making speciality alloys and superconductive materials. Holmium is used in Yttrium-Aluminum-Garnet (YAG) and Yttrium-Lanthanum-Fluoride (YLF) solid-state lasers found inmicrowave equipment (which are in turn found in a variety of medical and dental settings). Holmium lasers are used in medical, dental, and fiber-optical applications. Holmium is one of the colorants used for cubic zirconia and glass, providing yellow or red coloring. Holmium Metal can be further processed to various shapes of ingots, pieces, wires, foils, slabs, rods, discs and powder.
Used in Physical Vapor Deposition (PVD) processes, including thermal and electron-beam (e-beam) evaporation, for the preparation of thin films.
Safety
| Symbol(GHS) |  GHS02 |
| Signal word | Danger |
| Hazard statements | H228 |
| Precautionary statements | P210-P240-P241-P280-P370+P378 |
| Hazard Codes | C,F,O |
| Risk Statements | 34-11-8 |
| Safety Statements | 22-24/25-36-26-23-45-36/37/39-27 |
| RIDADR | UN 3089 4.1/PG 2 |
| WGK Germany | 3 |
| F | 1-10 |
| TSCA | Yes |
| HazardClass | 4.1 |
| PackingGroup | II |
| HS Code | 28053090 |
