Holmium chloride
Synonym(s):Holmium chloride;Holmium(III) chloride
- CAS NO.:10138-62-2
- Empirical Formula: Cl3Ho
- Molecular Weight: 271.29
- MDL number: MFCD00011051
- EINECS: 233-387-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-08-28 13:53:20
What is Holmium chloride?
Chemical properties
Yellow monoclinic crystals; hygroscopic; density 3.7 g/cm3 ; melts at 718°C; vaporizes at 1,500°C; readily dissolves in water.
Physical properties
Yellow monoclinic crystals; hygroscopic; density 3.7 g/cm3; melts at 718°C;vaporizes at 1,500°C; readily dissolves in water.
The Uses of Holmium chloride
Holmium chloride is an intermediate for preparing holmium metal.
The Uses of Holmium chloride
Holmium(III) chloride has many application in the field of nuclear industry, lasers research applications. It is also employed in calibration of optical spectrophotometers.
Preparation
Holmium chloride is obtained from rare-earth minerals. Recovery steps are discussed above (see Holmium). The rare-earth mineral is cracked by acid attack by heating with hydrochloric acid. The water-soluble chloride salt is filtered and separated from insoluble residues. The hydrated chloride salt is heated at 350°C in a current of hydrogen chloride to yield anhydrous HoCl3 . Heating in air in the absence of hydrogen chloride yields holmium oxychloride, HoOCl. Holmium chloride may be purified by distillation or vacuum sublimation.
Holmium chloride also can be prepared by heating holmium oxide with ammonium chloride:
Ho2O3 + 6NH4Cl-->2HoCl3 + 6NH3 + 3H2O
Properties of Holmium chloride
Melting point: | 718 °C(lit.) |
Boiling point: | 1500°C |
Density | 3,7 g/cm3 |
storage temp. | under inert gas (nitrogen or Argon) at 2-8°C |
solubility | soluble in H2O |
form | powder |
color | Off-white to pink |
Water Solubility | Soluble in water. |
Sensitive | Hygroscopic |
Merck | 14,4727 |
Stability: | hygroscopic |
CAS DataBase Reference | 10138-62-2(CAS DataBase Reference) |
EPA Substance Registry System | Holmium chloride (HoCl3) (10138-62-2) |
Safety information for Holmium chloride
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Holmium chloride
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