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Potassium dichromate

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Identification
Molecular formula
K2Cr2O7
CAS number
7778-50-9
IUPAC name
dipotassium;oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium
State
State

Potassium dichromate is a solid compound at room temperature. It is not very hygroscopic and can remain stable when exposed to air.

Melting point (Celsius)
398.00
Melting point (Kelvin)
671.00
Boiling point (Celsius)
500.00
Boiling point (Kelvin)
773.00
General information
Molecular weight
294.19g/mol
Molar mass
294.1850g/mol
Density
2.6760g/cm3
Appearence

Potassium dichromate is a crystalline ionic solid with a bright orange-red color. It often appears as small, needle-like crystals or as a coarse, granular powder.

Comment on solubility

Solubility of Dipotassium Oxido-(Oxido(dioxo)chromio)Oxy-Dioxo-Chromium

The compound Dipotassium Oxido-(Oxido(dioxo)chromio)Oxy-Dioxo-Chromium, although complex in its nomenclature, holds an intriguing position in regard to solubility. Generally, the solubility of compounds containing oxides and chromate species can vary widely based on several factors. Here are some important considerations:

  • Polarity: Oxide and chromate ions tend to form ionic compounds, which are influenced by the polarity of the solvent. In general, such compounds show decent solubility in polar solvents like water.
  • pH Levels: The solubility can be affected by the pH of the solution. Chromates typically dissolve better in alkaline conditions.
  • Ionic Strength: Higher ionic strength in the solution can enhance solubility through the "salting-in" effect, where the presence of ions in the solution assists in stabilizing the solute.
  • Temperature: Like many chemical compounds, solubility can increase with temperature, making higher temperatures favorable for dissolving dipotassium oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium.

It is essential to note that while definitive data on the solubility of this specific compound may be limited, understanding the interactions at play can provide a framework for predicting its behavior in various solutions. In summary, the solubility can be significantly influenced by solvent properties, environmental conditions, and the specific ionic configuration of the compound.

Interesting facts

Interesting Facts about Dipotassium Oxido-(Oxido(Dioxo)chromio)Oxy-Dioxo-Chromium

Dipotassium oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium is an intriguing compound that belongs to the category of chromium oxides. Here are some notable points regarding this compound:

  • Chromium’s Versatility: Chromium is known for its wide range of oxidation states, which allows it to form various compounds with diverse properties. This particular compound showcases chromium in multiple oxidation states, notably +6, which is significant for its reactivity and use in industrial applications.
  • Environmental Importance: Understanding compounds like this one is crucial in the field of environmental chemistry, particularly when discussing the mobility and toxicity of chromium species in ecosystems. Chromium(VI) is known to be toxic and can pose serious health risks to living organisms.
  • Industrial Applications: Chromium compounds are widely used in industries such as metallurgy and pigment production. They also play a role in the manufacturing of high-performance alloys owing to their favorable corrosion resistance.
  • Synthetic Pathways: The synthesis of this compound typically involves chemical reactions that highlight the interactions between potassium and chromium compounds. This underlines the intricate nature of chemical synthesis and the careful consideration needed to achieve desired outcomes.
  • Involving Coordination Chemistry: The complex nature of this compound emphasizes the principles of coordination chemistry, particularly in how metals interact with ligands to form stable complexes.

In summary, dipotassium oxido-(oxido(dioxo)chromio)oxy-dioxo-chromium not only serves as a chemical curiosity but also exemplifies significant concepts within both chemistry and environmental science. Understanding its properties can lead to a greater awareness of chromium's role in both industrial applications and environmental considerations.

Synonyms
POTASSIUM DICHROMATE
7778-50-9
Potassium bichromate
Kaliumdichromat
Iopezite
Potassium dichromate(VI)
Dipotassium bichromate
Dipotassium dichromate
Bichromate of potash
Dipotassium dichromium heptaoxide
Caswell No. 690
Kalium bichromicum
SRM 935a
CCRIS 2409
Potassium chromate (K2Cr2O7)
HSDB 1238
Potassium dichromate (K2Cr2O7)
K2Cr2O7
Potassium dichromate (K2(Cr2O7))
EINECS 231-906-6
NSC 77372
EPA Pesticide Chemical Code 068302
UNII-T4423S18FM
Dichromic acid, dipotassium salt
DTXSID5025948
CHEBI:53444
T4423S18FM
potassium dichromate(2-)
DTXCID705948
EC 231-906-6
NSC-77372
POTASSIUM DICHROMATE (MART.)
POTASSIUM DICHROMATE [MART.]
Bichromate, Potassium
Dichromate, Potassium
BICHROME
Kali Bichromicum 6C
Kali Bichromicum 30c
Kali bichromicum7123
Kali bichromicum 200C
Potassium dichromate (VI)
Kali Bichromicum Kit Refill
Dipotassium dichromate (VI)
KALI BICHROMICUM200ck
Pesticide Code: 068302
POTASSIUM DICHROMATE VI
DIPOTASSIUM BICHROMATE (K2CR2O7)
DIPOTASSIUM DICHROMATE (K2CR2O7)
231-906-6
Dichromic acid dipotassium salt
Chromium potassium oxide
MFCD00011367
dipotassium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium
Kaliumdichromat [German]
CAS-7778-50-9
Kali bichromicum
Epitope ID:119680
Chromic acid (H2Cr2O7) potassium salt (1:2)
Potassium dichromate ACS grade
KALI BICHROMICUM [HPUS]
POTASSIUM DICHROMATE [HSDB]
POTASSIUM DICHROMATE [VANDF]
Tox21_111009
Tox21_202307
Potassium dichromate, puriss., 99%
POTASSIUM DICHROMATE [WHO-DD]
AKOS024418771
POTASSIUM DICHROMATE(VI) [MI]
Potassium dichromate, AR, >=99.9%
Potassium dichromate, LR, >=99.5%
NCGC00090755-01
NCGC00259856-01
PD077496
Potassium dichromate, BioXtra, >=99.5%
NS00080655
Potassium dichromate, ACS reagent, >=99.0%
Potassium dichromate, BioUltra, >=99.5% (RT)
Potassium dichromate, ReagentPlus(R), >=99.5%
Chromic acid (H2Cr2O7), potassium salt (1:2)
Potassium dichromate, 99.99% trace metals basis
Potassium dichromate, SAJ first grade, >=99.5%
Q239729
Potassium dichromate, JIS special grade, >=99.5%
Potassium dichromate, Yanagishima Pharmaceutical Co. Ltd.
Potassium dichromate, NIST(R) SRM(R) 136f, oxidimetric standard
Potassium dichromate, NIST(R) SRM(R) 935a, UV absorbance standard
Potassium dichromate, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., >=99.8%
Potassium dichromate, certified reference material for titrimetry, certified by BAM according to ISO 17025, >=99.5%