Element Dysprosium

Dysprosium ElementAn 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
Molecular Weight:162.500 g/mol
EC Number :231-073-9
MDL Number:MFCD00010982
Other Names:Disprosio
PubChem CID:23912
IUPAC Name:Dysprosium
Canonical SMILES:[Dy]
ICSC Number:n/a

Physical & Chemical Properties

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
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
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

IsotopeMass/DaNatural abundance (atom %)Nuclear spin (I)Magnetic moment (μ/μN)
156Dy155.924277 (8)0.06 (1)0
158Dy157.924403 (5)0.10 (1)0
160Dy159.925193 (4)2.34 (8)0
161Dy160.926930 (4)18.91 (24)5/2-0.4806
162Dy161.926795 (4)25.51 (26)0
163Dy162.928728 (4)24.90 (16)5/20.6726
164Dy163.929171 (4)28.18 (37)0

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
152Dy151.924722.37 hEC to 152Tb; α to 148Gd0
153Dy152.9257636.3 hEC to 153Tb; α to 149Gd7/2-0.78
154Dy153.924423 x 106 yα to 150Gd0
155Dy154.925759.9 hEC to 155Tb3/2-0.385
157Dy156.925468.1 hEC to 157Tb3/2-0.301
159Dy158.925736144 dEC to 159Tb3/2-0.354
165Dy164.9317002.33 hβ to 165Ho7/2-0.52
166Dy165.9328033.400 dβ to 166Ho0

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