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Chromium(VI) oxide (CrO3)

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Identification
Molecular formula
CrO3
CAS number
1333-82-0
IUPAC name
oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium
State
State

At room temperature, chromium(VI) oxide exists in a solid state, typically crystalline, and has a distinctive red appearance.

Melting point (Celsius)
197.00
Melting point (Kelvin)
470.00
Boiling point (Celsius)
250.00
Boiling point (Kelvin)
523.00
General information
Molecular weight
99.99g/mol
Molar mass
99.9940g/mol
Density
2.7000g/cm3
Appearence

Chromium(VI) oxide, commonly referred to as chromic anhydride, appears as bright red or dark red crystals. It is hygroscopic and can absorb moisture from the air.

Comment on solubility

Solubility of Oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium

Oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium, which can also be referred to as chromium oxide, displays some intriguing properties when it comes to its solubility. Notably, this compound is generally insoluble in water, which means it does not dissolve effectively under typical conditions.

Here are some important points regarding its solubility:

  • The compound exhibits low solubility in various polar solvents.
  • In acidic conditions, limited solubility can be observed, where some ionized species may migrate into solution.
  • Common organic solvents do not significantly dissolve this compound, reinforcing its classification as a low-solubility material.

As a result of its low solubility, the use of oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium is often favored in applications that do not require dissolution, such as in solid-state reactions or as pigments. Its behavior in different environments can lead to unique interactions, especially when paired with other chemical species. This compound serves as an interesting example of how solubility can dramatically influence the properties and applications of a chemical substance.

Interesting facts

Interesting Facts about Oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium

Oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium is an intriguing compound within the realm of inorganic chemistry. This compound is noted for its complex structure and versatile applications. Here are some fascinating aspects:

  • Multiple Oxidation States: Chromium exhibits a variety of oxidation states, ranging from -2 to +6. This compound largely revolves around chromium in the +6 oxidation state, which is known for its high reactivity and ability to act as a strong oxidizing agent.
  • Role in Catalysis: Due to its unique electronic configuration, this compound is often used as a catalyst in various chemical reactions. It facilitates reactions by providing alternative pathways with lower activation energy.
  • Environmental Considerations: Compounds of chromium, especially in the +6 state, are subject to strict environmental regulations due to their potential toxicity. Understanding the behavior of oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium is crucial for safely managing chromium-containing materials and minimizing ecological impact.
  • Applications in Materials Science: The properties of this compound make it an excellent candidate for development in material applications, such as corrosion resistance and pigment formulation. Its complex structure can lead to unique optical and electrical properties.

As a student or scientist delving into the fascinating world of inorganic compounds, one might say, "The beauty of chemistry lies not only in the simplicity of elements but in the intricate dance of their compounds." Oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium embodies this notion through its complex interplay of oxidation states and profound implications across various fields.

Synonyms
Dichromate
Bichromate
Dichromate ion
Dichromate ion(2-)
Dichromate(2-)
13907-47-6
Dichromat
Chromate (Cr2O72-)
UNII-9LKY4BFN2V
9LKY4BFN2V
Dichromate (Cr2O72-)
Chromate (Cr2O7 2-)
Chromate (Cr2O7(2-))
mu-oxo-hexaoxodichromate(VI)
mu-oxo-hexaoxodichromate(2-)
DTXSID5074004
CHEBI:33141
Cr2O7(2-)
mu-oxido-bis(trioxidochromate)(2-)
CHROMIC ACID (H2CR2O7), ION(2-)
(Cr2O7)(2-)
[Cr2O7](2-)
DTXCID0034510
oxido-(oxido(dioxo)chromio)oxy-dioxochromium
Cr2O72?
Dichromate Standard: Cr2O7(-2) @ 1000 microg/mL in H2O
Dichromate Standard: Cr2O7(-2) @ 10000 microg/mL in H2O
Dichromate Standard
Cr2O72-
DB14182
NCGC00090755-03
NCGC00090755-04
NCGC00090755-05
Q27115574