Cadmium Elemental Symbol

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Cadmium Cadmium Cadmio Cádmio Cadmio Kadmium

Cadmium(Cd) atomic and molecular weight, atomic number and elemental symbolCadmium is a Block D, Group 12, Period 5 element. Cadmium Bohr ModelElemental CadmiumThe number of electrons in each of Cadmium's shells is 2, 8, 18, 18, 2 and its electronic configuration is [Kr] 4d10 5s2. The cadmium atom has a radius of and its Van der Waals radius is In its elemental form, CAS 7440-43-9, cadmium has a silvery bluish gray metallic appearance. Cadmium makes up about 0.1 ppm of the earth's crust. No significant deposits of cadmium containing ores are known, however, it is sometimes found in its metallic form. It is a common impurity in zinc ores and is isolated during the production of zinc. Cadmium was first discovered by Karl Samuel Leberecht Hermann and Friedrich Stromeyer in 1817. The name Cadmium originates from the Latin word 'cadmia' and the Greek word 'kadmeia'. See Cadmium research below.

Cadmium is a key component in battery production, it is present in cadmium pigments, coatings, and it's commonly used in electroplating. Cadmium oxide is used in phosphors for television picture tubes. Cadmium sulfide (CdS) is used as a photoconductive surface coating for photocopier drums. Cadmium is also used to control neutrons in nuclear fission. Cadmium in glass and ceramic glazes create a distinctive cadmium yellow. High Purity (99.99999%) Cadmium (Cd)Sputtering TargetCadmium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity). Elemental or metallic forms include pellets, rod, wire and granules for evaporation source material purposes. High Purity (99.999%) Cadmium Oxide (CdO) PowderCadmium nanoparticles and nanopowders provide ultra-high surface area which nanotechnology research and recent experiments demonstrate function to create new and unique properties and benefits. Oxides are available in powder and dense pellet form for such uses as optical coating and thin film applications. Oxides tend to be insoluble. Fluorides are another insoluble form for uses in which oxygen is undesirable such as metallurgy, chemical and physical vapor deposition and in some optical coatings. Cadmium is also available in soluble forms including chlorides, nitrates and acetates. These compounds can be manufactured as solutions at specified stoichiometries.

Cadmium and its compounds are toxic. Safety data for Cadmium and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the Products tab below.

  • Properties
  • Safety Data
  • Products
  • Research
  • Isotopes
  • Other Elements

Cadmium Properties

Symbol: Cd Melting Point: 594.22 K, 321.07 °C, 609.93 °F
Atomic Number: 48 Boiling Point: 1040 K, 767 °C, 1413 °F
Atomic Weight: 112.411 Density: 8.65 g·cm−3
Element Category: transition metal Liquid Density @ Melting Point: 7.996 g·cm−3
Group, Period, Block: 12, 5, d Specific Heat: 0.23 (kJ/kg K)
    Heat of Vaporization 100 kJ mol-1
CHEMICAL STRUCTURE Heat of Fusion 6.11 kJ mol-1
Electrons: 48 Thermal Conductivity: 96.6 W·m−1·K−1
Protons: 48 Thermal Expansion: (25 °C) 30.8 µm·m−1·K−1
Neutrons: 64 Electrical Resistivity: (22 °C) 72.7 nΩ·m
Electron Configuration: [Kr] 4d105s2 Electronegativity: 1.69 (Pauling scale)
Atomic Radius: 151 pm Tensile Strength: N/A
Covalent Radius: 144±9 pm Molar Heat Capacity: 26.020 J·mol−1·K−1
Van der Waals radius: Young's Modulus: 50 GPa
Oxidation States: 2, 1 (mildly basic oxide) Shear Modulus: 19 GPa
Phase: Solid Bulk Modulus: 42 GPa
Crystal Structure: hexagonal close-packed Poisson Ratio: 0.30
Magnetic Ordering: diamagnetic Mohs Hardness: 2.0
1st Ionization Energy: 867.78 kJ mol-1 Vickers Hardness: N/A
2nd Ionization Energy: 1631.42 kJ mol-1 Brinell Hardness: 203 MPa
3rd Ionization Energy: 3616.30 kJ mol-1 Speed of Sound: (20 °C) 2310 m·s−1
CAS Number: 7440-43-9 Abundance in typical human body, by weight: 700 ppb
ChemSpider ID: 22410 Abundance in typical human body, by atom: 39 ppb
PubChem CID: 23973 Abundance in universe, by weight: 2 ppb
MDL Number: MFCD00010914 Abundance in universe, by atom: 0.02 ppb
EC Number: 231-152-8 Discovered By: Karl Samuel Leberecht Hermann and Friedrich Stromeyer
Beilstein Number: 8137359 Discovery Date: 1817
SMILES Identifier: [Cd]  
InChI Identifier: InChI=1S/Cd Other Names: Cadmio, Cádmio, Kadmium,

Health, Safety & Transportation Information for Cadmium

Material Safety Data Sheet MSDS
Signal Word Danger
Hazard Statements H330-H341-H350-H361fd-H372-H410
Hazard Codes T+,N
Risk Codes 45-26-48/23/25-50/53-62-63-68
Safety Precautions 53-45-60-61
RTECS Number EU9800000
Transport Information UN 2570 6.1/PG 1
WGK Germany 3
Globally Harmonized System of
Classification and Labelling (GHS)
Environment-Hazardous to the aquatic environment Health Hazard Skull and Crossbones-Acute Toxicity   

Cadmium Products

Metal Forms  •  Compounds  •  Alloys  •  Oxide Forms  •  Organometallic Compounds
Sputtering Targets  •  Nanomaterials  •  Semiconductor Materials •  Isotopes


Cadmium Acetate
Cadmium Acetate Dihydrate
Cadmium Acetate Solution
Cadmium Bromide
Cadmium Bromide, Ultra Dry
Cadmium Carbide
Cadmium Carbonate
Cadmium Chloride
Cadmium Chloride, Ultra Dry
Cadmium Chloride Hemi(pentahydrate)
Cadmium Chloride Hydrate
Cadmium Chloride Solution
Cadmium Chromate
Cadmium Diphosphide
Cadmium Fluoride
Cadmium Hydroxide
Cadmium Iodate
Cadmium Iodide
Cadmium Iodide, Ultra Dry
Cadmium Molybdate
Cadmium Nitrate
Cadmium Nitrate Solution
Cadmium Nitride
Cadmium Oxide
Cadmium Oxalate
Cadmium Perchlorate Hydrate
Cadmium Phosphate
Cadmium Selenate
Cadmium Selenite
Cadmium Stannate
Cadmium Sulfate Hydrate
Cadmium Sulfate Octahydrate
Cadmium Sulfate Solution
Cadmium Sulfate, Anhydrous
Cadmium Tantalate CdTa2O6
Cadmium Tantalate Cd2Ta2O7
Cadmium Tellurite
Cadmium Tungstate
Cadmium Vanadate

Organometallic Compounds

Cadmium 2-Ethylhexanoate
Cadmium Acetylacetonate
Cadmium Diethyldithiocarbamate
Cadmium Formate
Cadmium Phthalocyanine
Cadmium Trifluoromethanesulfonate

Crystal/ Semiconductor Materials

Cadmium Antimonide CdSb
Cadmium Antimonide Cd3Sb2
Cadmium Arsenide Cd3As2
Cadmium(IV) Arsenide CdAs2
Cadmium Indium Tellurium Granules
Cadmium Indium Tellurium Powder
Cadmium Indium Tellurium Lump
Cadmium Phosphide CdP2
Cadmium Phosphide Cd3P2
Cadmium Selenide
Cadmium Selenide Hollow Spheres
Cadmium Selenide Tube
Cadmium Sulfide
Cadmium Telluride
Cadmium Zinc Telluride (CZT)
Zinc Cadmium Telluride Granule
Zinc Cadmium Telluride Lump
Zinc Cadmium Telluride Powder

Bismuth Indium Cadmium Alloy
Bismuth Lead Cadmium Alloy
Bismuth Lead Cadmium Indium Alloy
Bismuth Lead Cadmium Indium Tin Alloy
Bismuth Lead Cadmium Tin Alloy
Bismuth Lead Indium Tin Cadmium Alloy
Bismuth Lead Tin Cadmium Alloy
Bismuth Lead Tin Cadmium Indium Alloy
Bismuth Lead Tin Cadmium Ingot
Bismuth Cadmium
Bismuth Tin Cadmium
Cadmium Zinc Alloy
Indium Bismuth Cadmium Alloy
Indium Cadmium Alloy
Indium Tin Cadmium Alloy
Indium Tin Lead Cadmium Alloy
Lead Bismuth Tin Cadmium Alloy
Lead Cadmium Alloy
Mercury Cadmium Telluride Granules
Mercury Cadmium Telluride Powder
Mercury Cadmium Telluride Lump
Silver Cadmium Zinc Copper Alloy Particles
Silver Cadmium Zinc Copper Alloy Powder
Tin Cadmium Alloy
Tin Lead Cadmium
Woods Metal Stick


Cadmium Nanoprisms
Cadmium Nanorods
Cadmium Oxide Nanopowder
Cadmium Selenide Hollow Nanospheres
Cadmium Selenide Nanotubes
Cadmium Selenide Quantum Dots
Cadmium Telluride Quantum Dots
CdSe/ZnS Quantum Dots
ZnCdSe/ZnS Sulfide Quantum Dots


Cadmium-106 Isotope
Cadmium-106 Oxide Isotope
Cadmium-108 Isotope
Cadmium-108 Oxide Isotope
Cadmium-110 Oxide Isotope
Cadmium-111 Chloride Isotope
Cadmium-111 Oxide Isotope
Cadmium-112 Isotope
Cadmium-112 Oxide Isotope
Cadmium-113 Chloride Isotope
Cadmium-113 Isotope
Cadmium-113 Oxide Isotope
Cadmium-114 Oxide Isotope
Cadmium-116 Oxide Isotope

Sputtering Targets

Cadmium Antimonide Sputtering Target
Cadmium Arsenide Sputtering Target
Cadmium Fluoride Sputtering Target
Cadmium Oxide Rotatable Sputtering Target
Cadmium Oxide Sputtering Target
Cadmium Phosphide Sputtering Target
Cadmium Rotatable Sputtering Target
Cadmium Selenide Sputtering Target
Cadmium Sputtering Target
Cadmium Sulfide Sputtering Target
Cadmium Telluride Sputtering Target
Cadmium Tin Sputtering Target
Cadmium Zinc Sulfide Sputtering Target

Recent Research & Development for Cadmium

  • P. Dhivya, Arun K. Prasad, M. Sridharan, Effect of sputtering power on the methane sensing properties of nanostructured cadmium oxide films, Journal of Alloys and Compounds, Volume 620, 25 January 2015
  • K. Jeyadheepan, M. Thamilselvan, Kyunghae Kim, Junsin Yi, C. Sanjeeviraja, Optoelectronic properties of R-F magnetron sputtered Cadmium Tin Oxide (Cd2SnO4) thin films for CdS/CdTe thin film solar cell applications, Journal of Alloys and Compounds, Volume 620, 25 January 2015
  • M.S. Gaafar, I. Shaarany, T. Alharbi, Structural investigations on some cadmium-borotellurate glasses using ultrasonic, FT-IR and X-ray techniques, Journal of Alloys and Compounds, Volume 616, 15 December 2014
  • Xiaodong Li, Zemin Zhang, Lulu Chen, Zhongping Liu, Jianli Cheng, Wei Ni, Erqing Xie, Bin Wang, Cadmium sulfide quantum dots sensitized tin dioxide–titanium dioxide heterojunction for efficient photoelectrochemical hydrogen production, Journal of Power Sources, Volume 269, 10 December 2014
  • I. Nawrot, B. Machura, R. Kruszynski, Thiocyanate cadmium(II) complexes of 2,4,6-tri(2-pyridyl)-1,3,5-triazine – Synthesis, structure and luminescence properties, Journal of Luminescence, Volume 156, December 2014
  • Jingfu Zhang, Jingen Pan, Lianyi Shao, Jie Shu, Mingjiong Zhou, Jianguo Pan, Micro-sized cadmium tungstate as a high-performance anode material for lithium-ion batteries, Journal of Alloys and Compounds, Volume 614, 25 November 2014
  • Neetesh Kumar, Viresh Dutta, Fabrication of polymer/cadmium sulfide hybrid solar cells [P3HT:CdS and PCPDTBT:CdS] by spray deposition, Journal of Colloid and Interface Science, Volume 434, 15 November 2014
  • Bing-Ping Yang, Jiang-Gao Mao, Synthesis, crystal structure and optical properties of two new layered cadmium iodates: Cd(IO3)X (X=Cl, OH), Journal of Solid State Chemistry, Volume 219, November 2014
  • Omid Amiri, Masoud Salavati-Niasari, S. Mostafa Hosseinpour-Mashkani, Ali Rafiei, Samira Bagheri, Cadmium selenide@sulfide nanoparticle composites: Facile precipitation preparation, characterization, and investigation of their photocatalyst activity, Materials Science in Semiconductor Processing, Volume 27, November 2014
  • Mohammad Sabet, Masoud Salavati-Niasari, Deposition of cadmium selenide semiconductor nanostructures on TiO2 surface via different chemical methods and investigation of their effects on dye sensitized solar cell efficiency, Materials Science in Semiconductor Processing, Volume 27, November 2014

Cadmium Isotopes

Naturally occurring cadmium (Cd) has six stable isotopes: 106Cd, 108Cd, 110Cd, 111Cd, 112Cd, and 114Cd.

Nuclide Symbol Isotopic Mass Half-Life Nuclear Spin
106Cd 105.906459 Observationally Stable 0+
108Cd 107.904184 Observationally Stable 0+
110Cd 109.9030021 Stable 0+
111Cd 110.9041781 Stable 1/2+
112Cd 111.9027578 Stable 0+
114Cd 113.9033585 Observationally Stable 0+