Element Dysprosium
An element of the rare earth family that has the atomic symbol Dy, atomic number 66, and atomic weight 162.50. Dysprosium is a silvery metal used primarily in the form of various salts.
Dysprosium atom is a lanthanoid atom and a f-block element atom.
Names and Identifiers
| Chemical Formula: | Dy |
| CAS: | 7429-91-6 |
| Molecular Weight: | 162.500 g/mol |
| EC Number : | 231-073-9 |
| MDL Number: | MFCD00010982 |
| Color: | silvery-white |
| Other Names: | Disprosio |
| PubChem CID: | 23912 |
| IUPAC Name: | Dysprosium |
| Inchl: | InChI=1S/Dy |
| InChI Key: | KBQHZAAAGSGFKK-UHFFFAOYSA-N |
| Canonical SMILES: | [Dy] |
| ICSC Number: | n/a |
Physical & Chemical Properties
| Phase: | Solid |
| Density: | 8.540 g/cm³ |
| Boiling Point: | 2840 K (2562 °C, 4653 °F) |
| Melting Point: | 1680 K (1407 °C, 2565 °F) |
| Molecular Formula: | Dy |
| Flash Point: | n/a |
| Exact Mass: | 163.929199 |
| Symbol: | n/a |
| Signal Word: | Warning |
| Hazard Statements: | H228 |
| Precautionary Statements: | n/a |
| Hazard Codes: | Xi:Irritant; |
| Risk Phrases: | 11 |
| Safety Phrases: | S22-S24/25-S36/37/39-S33-S16 |
| RIDADR: | UN 3089 4.1/PG 2 |
| WGK Germany: | 3 |
| RTECS: | n/a |
| Packaging Group: | III |
| Hazard Class: | 8 |
Many of the Dy isotopes have been the subject of physics research.
Dy-156 has been used to study double electron capture while Dy-160 has been used in research to investigate its multitude of excited states.
Dy-161 spectroscopy has been used to determine the properties of Dy based superconductor material.
Dy-162 has been used to study excited states in deformed nuclei.
Dy-164 has two medical applications. It is used in the production of Dy-165 which is used in arthritis therapy.
Naturally occurring isotopes
| Isotope | Mass/Da | Natural abundance (atom %) | Nuclear spin (I) | Magnetic moment (μ/μN) |
|---|---|---|---|---|
| 156Dy | 155.924277 (8) | 0.06 (1) | 0 | |
| 158Dy | 157.924403 (5) | 0.10 (1) | 0 | |
| 160Dy | 159.925193 (4) | 2.34 (8) | 0 | |
| 161Dy | 160.926930 (4) | 18.91 (24) | 5/2 | -0.4806 |
| 162Dy | 161.926795 (4) | 25.51 (26) | 0 | |
| 163Dy | 162.928728 (4) | 24.90 (16) | 5/2 | 0.6726 |
| 164Dy | 163.929171 (4) | 28.18 (37) | 0 |
Radiosotope data
| Isotope | Mass/Da | Half-life | Mode of decay | Nuclear spin | Nuclear magnetic moment |
|---|---|---|---|---|---|
| 152Dy | 151.92472 | 2.37 h | EC to 152Tb; α to 148Gd | 0 | |
| 153Dy | 152.925763 | 6.3 h | EC to 153Tb; α to 149Gd | 7/2 | -0.78 |
| 154Dy | 153.92442 | 3 x 106 y | α to 150Gd | 0 | |
| 155Dy | 154.92575 | 9.9 h | EC to 155Tb | 3/2 | -0.385 |
| 157Dy | 156.92546 | 8.1 h | EC to 157Tb | 3/2 | -0.301 |
| 159Dy | 158.925736 | 144 d | EC to 159Tb | 3/2 | -0.354 |
| 165Dy | 164.931700 | 2.33 h | β– to 165Ho | 7/2 | -0.52 |
| 166Dy | 165.932803 | 3.400 d | β– to 166Ho | 0 |