This article is about the salts of the chromium(VI) anion. For other uses, see Chromate. See also for disambiguation of derived terms.
Not to be confused with chromite (compound), monochromat, dichromat, trichromat, or tetrachromat.
Chromate and dichromate
Names
Systematic IUPAC name
Chromate and dichromate
Identifiers
CAS Number
chromate: 13907-45-4N
dichromate: 13907-47-6N
3D model (JSmol)
chromate: Interactive image
dichromate: Interactive image
ChEBI
chromate: CHEBI:35404
dichromate: CHEBI:33141
DrugBank
dichromate: DB14182
PubChem CID
chromate: 24461
dichromate: 24503
UNII
chromate: 9S2Y101D6M
dichromate: 9LKY4BFN2V
CompTox Dashboard (EPA)
chromate: DTXSID7065675
dichromate: DTXSID5074004
InChI
chromate: InChI=1S/Cr.4O/q;;;2*-1
Key: ZCDOYSPFYFSLEW-UHFFFAOYSA-N
dichromate: InChI=1S/2Cr.7O/q;;;;;;;2*-1
Key: SOCTUWSJJQCPFX-UHFFFAOYSA-N
SMILES
chromate: [O-][Cr](=O)(=O)[O-]
dichromate: O=[Cr](=O)([O-])O[Cr](=O)(=O)[O-]
Properties
Chemical formula
CrO2− 4 and Cr 2O2− 7
Molar mass
115.994 g mol−1 and 215.988 g mol−1
Conjugate acid
Chromic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
Chromate salts contain the chromate anion, CrO2− 4. Dichromate salts contain the dichromate anion, Cr 2O2− 7. They are oxyanions of chromium in the +6 oxidation state and are moderately strong oxidizing agents. In an aqueous solution, chromate and dichromate ions can be interconvertible.
and 24 Related for: Chromate and dichromate information
Chromate salts contain the chromate anion, CrO2− 4. Dichromate salts contain the dichromate anion, Cr 2O2− 7. They are oxyanions of chromium in the +6...
containing dichromate ions, a yellow solution is obtained due to the formation of chromate ions (CrO2−4). For example, potassium chromate is produced...
potassium and sodium dichromates are very similar. When treated with lead(II) nitrate, it gives an orange-yellow precipitate, lead(II) chromate. Unlike...
around 30 to 35 degrees C Dichromateandchromate salts are oxidizing agents. For the tanning of leather, sodium dichromate is first reduced with sulfur...
Subsequent to its formation, the chromate salt is converted to sodium dichromate, the precursor to most chromium compounds and materials. The industrial route...
is continuous and covers the entire surface. Although the main reactions turn most of the chromium(VI) anions (chromatesanddichromates) in the deposited...
Chromate or chromat, and their derived terms, may refer to: Chromateanddichromate, ions Monochromate, an ion Trichromate, an ion Tetrachromate, an ion...
line to be drawn on the predominance diagram. Red line Hydrogen chromateanddichromate have equal concentrations. Setting [HCrO−4] equal to [Cr2O2−7]...
create zinc chromate for use in industry. This process is done by putting zinc or a zinc plated metal in a solution of sodium dichromateand sulfuric acid...
temperatures dissolves the chromatesand leaves the insoluble iron oxide. The chromate is converted by sulfuric acid into the dichromate. 4 FeCr2O4 + 8 Na2CO3...
sodium dichromate. Sodium chromate is converted into other hexavalent chromium compounds such as chromium trioxide and various salts of chromateand dichromate...
chloride and sodium chromate, or from strontium carbonate and sodium dichromate. Strontium chromate is approximately 30 times more soluble in water at 100 °C...
solution formed by the addition of sulfuric acid to aqueous solutions of dichromate. It consists at least in part of chromium trioxide. The term chromic acid...
lupenone: With tertiary alcohols, the chromate ester formed from PCC can isomerize via a [3,3]-sigmatropic reaction and following oxidation yield an enone...
Ammonium chromate is a salt with the formula (NH4)2CrO4. It forms yellow, monoclinic crystals; made from ammonium hydroxide and ammonium dichromate; used...
Chromium(VI) compounds are oxidants at low or neutral pH. Chromate anions (CrO2− 4) anddichromate (Cr2O72−) anions are the principal ions at this oxidation...
mechanistically related oxidations using pyridinium dichromate or pyridinium chlorochromate. Chromate esters of allyl alcohols may isomerize via formal...
dichromate solution. This is followed by drying and immersion in a 2% aqueous silver nitrate solution. By the same reaction as above, silver chromate...
The pyridinium dichromate (PDC) or Cornforth reagent is a pyridinium salt of dichromate with the chemical formula [C5H5NH]2[Cr2O7]. This compound is named...
Registration Office (disambiguation) Cathode-ray oscilloscope Chromateanddichromate Chromium(II) oxide, with chromium in the +2 oxidation state Contract...
Barium chromate, is a yellow sand like powder with the formula BaCrO4. It is a known oxidizing agent and produces a green flame when heated, a result...
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