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Cadmium ion

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Identification
Molecular formula
Cd2+
CAS number
22537-18-0
IUPAC name
cadmium(2+)
State
State

Cadmium ions are typically found in aqueous solution or as part of a solid salt compound at room temperature. As a free ion specifically, it is present in a liquid solution form.

Melting point (Celsius)
321.00
Melting point (Kelvin)
594.15
Boiling point (Celsius)
767.00
Boiling point (Kelvin)
1 040.00
General information
Molecular weight
112.41g/mol
Molar mass
112.4110g/mol
Density
8.6500g/cm3
Appearence

Cadmium ions themselves do not have an appearance. When cadmium ion is part of a compound, it usually contributes to the appearance of the compound that typically manifests as a solid with varying colors depending on the other elements or ions present. Cadmium compounds are often found as white crystalline solids or as powders. In aqueous solutions, cadmium ions are colorless.

Comment on solubility

Solubility of Cadmium(II) Compounds

Cadmium(II) ions, denoted as Cd2+, exhibit unique solubility characteristics that are crucial in various chemical applications. Here are some key points regarding their solubility:

  • Inorganic Salts: Cadmium(II) salts tend to be generally soluble in water, but their solubility varies significantly from one compound to another.
  • Common Compounds:
    • Cadmium chloride (CdCl2) is highly soluble in water, making it useful in aqueous applications.
    • Cadmium sulfate (CdSO4) is also soluble, though it is less soluble than cadmium chloride.
    • Cadmium carbonate (CdCO3), on the other hand, is insoluble in water, highlighting the variability among cadmium compounds.
  • Influence of pH: The solubility of cadmium compounds can be significantly influenced by the pH of the solution. In acidic conditions, many cadmium salts become more soluble.
  • Temperature Effects: Typically, the solubility of cadmium salts increases with temperature, although this can vary with specific compounds.

In summary, understanding the solubility behavior of Cd2+ compounds is essential for their practical applications in fields such as analytical chemistry, environmental science, and material science. It's always important to consider the specific cadmium compound in question to predict its solubility accurately.

Interesting facts

Interesting Facts About Cadmium(II) (Cd2+)

Cadmium(II), represented by the formula Cd2+, is a fascinating cation with diverse implications in both industry and environmental science. Here are some intriguing points worth noting:

  • Source and Occurrence: Cadmium is typically found in mineral deposits alongside other elements like zinc and lead. It often originates from mining activities, smelting processes, and even as a byproduct of refining zinc ores.
  • Industrial Applications: Cadmium(II) ions are used in various industries for purposes such as:
    • Manufacturing batteries, particularly nickel-cadmium (NiCd) rechargeable batteries.
    • As a pigment in paints and coatings, providing vibrant colors thanks to its unique properties.
    • Being utilized in some alloy compositions to enhance corrosion resistance.
  • Toxicity and Environmental Impact: Cadmium(II) is notorious for its toxicity. Exposure to cadmium can lead to serious health issues, including:
    • Kidney damage and dysfunction.
    • Bone weakening known as osteomalacia.
    • Potential carcinogenic effects with long-term exposure.
  • Regulation and Safety: Due to its hazardous nature, cadmium is closely monitored and regulated. Many countries have enforced strict guidelines to limit cadmium exposure in consumer products, industrial waste, and agricultural practices.
  • Biological Role: Interestingly, while most heavy metals are detrimental to biological systems, cadmium does play some intricate roles in specific biological processes, albeit in very low concentrations.

In summary, the properties and uses of cadmium(II) are a double-edged sword. As a crucial component in certain technologies, it also poses significant health risks that necessitate careful management and regulation. Cadmium(II) serves as a reminder of the challenges in balancing industrial needs with environmental health.

Synonyms
Cadmium ion
Cadmium(2+)
Cadmium cation
Cadmium(2+) ion
9032-08-0
Cadmium, ion (Cd2+)
T494FZ4G8G
22537-48-0
Glucozyme
Cd(2+)
CHEBI:48775
DTXSID60177060
Cadmium ions
Cadmium(2+)ions
Cadmium, ion(Cd2+)
UNII-T494FZ4G8G
Cadmium elemental
cadmium(II)
CdII
Cadmium (II) ion
RefChem:1080612
Cd++
Cd+2
Cd2+
DTXCID7099551
SCHEMBL29419916
CHEBI:63063
WLZRMCYVCSSEQC-UHFFFAOYSA-N
Native Aspergillus niger Amyloglucosidase
NCGC00090932-02
NCGC00090932-03
NCGC00090932-04
DA-65942
Amyloglucosidase from |Aspergillus| |niger|
Q26841251