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Potassium dichromate dodecahydrate

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Identification
Molecular formula
K2Cr2O7·12H2O
CAS number
7789-12-0
IUPAC name
chromic;potassium;disulfate;dodecahydrate
State
State

At room temperature, potassium dichromate dodecahydrate is a solid, generally available as crystalline powder or granules. Due to its dodecahydrate form, it may show instability at room temperature as it can lose its water of crystallization over time, which may alter its appearance.

Melting point (Celsius)
100.00
Melting point (Kelvin)
373.15
Boiling point (Celsius)
500.00
Boiling point (Kelvin)
773.15
General information
Molecular weight
486.00g/mol
Molar mass
485.9990g/mol
Density
2.6763g/cm3
Appearence

Potassium dichromate dodecahydrate typically forms as bright orange to red crystalline solid. The crystals are known for their striking color and are often large and well-formed when crystallized from a solution. These crystals may appear slightly damp as a result of their water of hydration.

Comment on solubility

Solubility of Chromic Potassium Disulfate Dodecahydrate

Chromic potassium disulfate dodecahydrate, an intriguing compound represented by its formula K2Cr2(SO4)2 · 12H2O, exhibits specific solubility characteristics that are important for its applications in various fields.

Solubility Characteristics:

  • Water Solubility: This compound is known to be soluble in water. The presence of the dodecahydrate form enhances its solubility due to the hydrophilic nature of the water molecules associated with it.
  • Temperature Dependency: As is common with many salts, solubility often increases with temperature. Therefore, increasing the temperature of the solvent can facilitate a higher dissolution rate.
  • pH Influence: The solubility of chromic potassium disulfate can be affected by the pH of the solution, as the acidic environment can enhance the dissolution of certain metal salts.
  • Ion Interaction: The presence of other ions in solution might impact solubility, potentially leading to precipitation under certain conditions or promoting greater solubility through ion pairing.

In conclusion, chromic potassium disulfate dodecahydrate demonstrates a noteworthy solubility profile in water, which makes it a valuable compound in various chemical processes. It is essential to consider the conditions of the solution, such as temperature and pH, to fully harness its solubility potential.

Interesting facts

Interesting Facts about Chromic Potassium Disulfate Dodecahydrate

Chromic potassium disulfate dodecahydrate, commonly referred to as chromic potassium sulfate, is a fascinating compound with a wide range of applications in various fields:

  • Historical Significance: This compound has been utilized in the field of dyeing and textile manufacturing for many years. Its unique properties allow for vibrant and long-lasting colors.
  • Oxidizing Agent: It is known for its role as an oxidizing agent in chemical reactions, which makes it valuable in organic synthesis and industrial processes.
  • Laboratory Applications: In analytical chemistry, chromic potassium disulfate is often used as a reagent for qualitative analysis, helping to identify the presence of certain compounds.
  • Environmental Impact: As an inorganic compound, it is important to consider the safety and environmental implications of its use, especially in industrial settings.

Interestingly, this compound is also part of the class of salts known as chromates, which are typically used in a variety of chemical reactions due to their reactivity and stability. The presence of the dodecahydrate indicates that it can hydrate, acting alongside water molecules to play a crucial role in its solubility and reactivity.

In summary, chromic potassium disulfate dodecahydrate not only stands out for its chemical properties but also holds a significant place in historical and modern applications in chemistry and industry. Its dual role as both a dyeing agent and an oxidizing agent showcases the diverse nature of chemical compounds in everyday life.

Synonyms
Chromium potassium sulfate dodecahydrate
Chromic potassium sulfate dodecahydrate
Chromium(III) potassium sulfate dodecahydrate
Chrome alum (dodecahydrate)
Potassium chromium alum dodecahydrate
CCRIS 8929
Chromium(III) potassium sulfate (1:1:2), dodecahydrate
Sulfuric acid, chromium(3+)potassium salt(2:1:1), dodecahydrate
CHROMIUM KALI SULPHURICUM
Potassium chromium(III) sulfate dodecahydrate
DTXSID90228493
CHROMIUM KALI SULPHURICUM [HPUS]
CHROMIC POTASSIUM SULFATE DODECAHYDRATE [MI]
CHROMIUM(III) POTASSIUM DISULFATE DODECAHYDRATE
DTXCID10150984
7788-99-0
potassium;chromium(3+);disulfate;dodecahydrate
H54D055WX6
MFCD00149917
UNII-H54D055WX6
H24CrKO20S2
ZFVHBEKVAITXHW-UHFFFAOYSA-J
AKOS015902664
AKOS025243252
FC41538
Chromium(III)potassiumsulfatedodecahydrate
NS00129488
Q27279646