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| | Holmium chloride Basic information |
| | Holmium chloride Chemical Properties |
| 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 | | 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) |
| Hazard Codes | Xi | | Risk Statements | 36/37/38 | | Safety Statements | 26-37/39 | | WGK Germany | 3 | | RTECS | MS7350000 | | TSCA | Yes | | HS Code | 28469000 | | Toxicity | mouse,LD50,intraperitoneal,312mg/kg (312mg/kg),BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)BEHAVIORAL: FOOD INTAKE (ANIMAL)LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES,Archives of Environmental Health. Vol. 5, Pg. 437, 1962. |
| | Holmium chloride Usage And Synthesis |
| 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. | | Uses | Holmium(III) chloride has many application in the field of nuclear industry, lasers research applications. It is also employed in calibration of optical spectrophotometers. | | Uses | Holmium chloride is an intermediate for preparing holmium metal. | | 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 |
| | Holmium chloride Preparation Products And Raw materials |
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