Element Cadmium

Cadmium ElementIt is a chemical element with the symbol Cd and atomic number 48
This soft, silvery-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury.
Element Cadmium occurs as a minor component in most zinc ores and is a byproduct of zinc production.
Cadmium was used for a long time as a corrosion-resistant plating on steel, and cadmium compounds are used as red, orange and yellow pigments, to color glass, and to stabilize plastic.
It is similar in many respects to zinc but forms complex compounds. Unlike most other metals, cadmium is resistant to corrosion and is used as a protective plate on other metals. As a bulk metal, cadmium is insoluble in water and is not flammable; however, in its powdered form it may burn and release toxic fumes.

Names and Identifiers

Chemical Formula:Cd
Molecular Weight:112.41100 g/mol
EC Number :231-152-8
MDL Number:MFCD00010914
Color:bluish-white/ silvery gray metallic
Other Names:Cadmio, Cádmio, Kadmium,
PubChem CID:23973
IUPAC Name:Cadmium
Canonical SMILES:[Cd]
ICSC Number:0020

Physical & Chemical Properties

Density:8.65 g/cm³
Boiling Point:1040 K ​(767 °C, ​1413 °F)
Melting Point:594.22 K ​(321.07 °C, ​609.93 °F)
Molecular Formula:Cd
Flash Point:n/a
Exact Mass:113.90300
Symbol:Globally Harmonized System of ClassificationGlobally Harmonized System of ClassificationGlobally Harmonized System of Classification
Signal Word:Danger
Hazard Statements:H330-H341-H350-H361fd-H372-H410
Precautionary Statements:P201-P260-P273-P304 + P340 + P310-P308 + P313-P403 + P233
Hazard Codes:Xn:Harmful
Risk Phrases:R20/21/22;R50/53
Safety Phrases:S60-S61
RIDADR:UN 3082 9/PG 3
WGK Germany:3
Packaging Group:III
Hazard Class:n/a

Naturally occurring cadmium is composed of 8 isotopes.
Two of them are radioactive, and three are expected to decay but have not done so under laboratory conditions. The two natural radioactive isotopes are 113Cd (beta decay, half-life is 7.7 × 1015 years) and 116Cd (two-neutrino double beta decay, half-life is 2.9 × 1019 years).

Naturally occurring isotopes

IsotopeMass/DaNatural abundance (atom %)Nuclear spin (I)Magnetic moment (μ/μN)
106Cd105.906461 (7)1.25 (6)0
108Cd107.904176 (6)0.89 (3)0
110Cd109.903005 (4)12.49 (18)0
111Cd110.904182 (3)12.80 (12)1/2-0.5948857
112Cd111.902757 (3)24.13 (21)0
113Cd112.904400 (3)12.22 (12)1/2-0.6223005
114Cd113.903357 (3)28.73 (42)0
116Cd115.904755 (4)7.49 (18)0

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
107Cd106.906616.52 hEC to 107Ag5/2-0.615055
109Cd108.90495462 dEC to 109Ag5/2-0.827846
115Cd114.9054312.228 hβ to 115Cd1/2-1.087
117Cd116.9072282.49 hβ to 117Cd1/2

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