Element Palladium

Palladium ElementIt is an element with atomic symbol Pd, atomic number 46, and atomic weight 106.42.
Element Palladium is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston.
Palladium has the lowest melting point and is the least dense of platinum group metals. The primary use for palladium is in catalytic converters for the automotive industry.
Palladium is also used in electronics, dentistry, medicine, hydrogen purification, chemical applications, groundwater treatment, and jewelry. Palladium is a key component of fuel cells, which react hydrogen with oxygen to produce electricity, heat, and water.

Names and Identifiers

Chemical Formula:Pd
CAS:7440-05-3
Molecular Weight:106.420g/mol
EC Number :231-115-6
MDL Number:MFCD00011167
Color:silvery white metallic/ silvery-white
Other Names:Palladio
PubChem CID:23938
IUPAC Name:Palladium
Inchl:InChI=1S/Pd
InChI Key:KDLHZDBZIXYQEI-UHFFFAOYSA-N
Canonical SMILES:[Pd]
ICSC Number:n/a

Physical & Chemical Properties

Phase:Solid
Density:12.023 g/cm³
Boiling Point:3236 K ​(2963 °C, ​5365 °F)
Melting Point:1828.05 K ​(1554.9 °C, ​2830.82 °F)
Molecular Formula:Pd
Flash Point:n/a
Exact Mass:105.903481
Symbol:Globally Harmonized System of ClassificationGlobally Harmonized System of Classification
Signal Word:Danger
Hazard Statements:H228-H315-H319-H335
Precautionary Statements:P210-P261-P305 + P351 + P338
Hazard Codes:Xn:Harmful
Risk Phrases:R61
Safety Phrases:S53-S26-S36/37/39-S24/25-S36-S22
RIDADR:UN 3089 4.1/PG 2
WGK Germany:n/a
RTECS:RT3480500
Packaging Group:III
Hazard Class:4.1

Pd-104 is used for the production of radioactive Pd-103 seeds which are used to fight prostate cancer. Pd-103 can also be made from Pd-102. Other Pd isotopes such as Pd-110 and Pd-108 have been used in physical experiments such as research into the decay of Nd-137 and nuclear fusion phenomena. Pd-108 can also be used for the production of radioactive Pd-109 which is used for cancer therapy.

Naturally occurring isotopes

IsotopeMass/DaNatural abundance (atom %)Nuclear spin (I)Magnetic moment (μ/μN)
102Pd101.905634 (5)1.02 (1)0
104Pd103.904029 (6)11.14 (8)0
105Pd104.905079 (6)22.33 (8)5/2-0.642
106Pd105.903478 (6)27.33 (3)0
108Pd107.903895 (4)26.46 (9)0
110Pd109.905167 (20)11.72 (9)0

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
100Pd99.908513.7 dEC to 100Rh0
101Pd100.908298.4 hEC to 101Rh5/2-0.66
103Pd102.90608716.99 dEC to 103Rh5/2
107Pd106.905136.5 x 106 yβ to 107Ag5/2
109Pd108.90595413.5 hβ to 109Ag5/2
111Pd110.9076423.4 mβ to 111Ag5/2
112Pd111.9073121.04 hβ to 112Ag0

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