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  2. Potassium chromate - Wikipedia

    en.wikipedia.org/wiki/Potassium_chromate

    Potassium chromate is the inorganic compound with the formula K 2 CrO 4. This yellow solid is the potassium salt of the chromate anion. It is a common laboratory chemical, whereas sodium chromate is important industrially.

  3. Chromate and dichromate - Wikipedia

    en.wikipedia.org/wiki/Chromate_and_dichromate

    The hydrogen chromate ion may be protonated, with the formation of molecular chromic acid, H 2 CrO 4, but the pK a for the equilibrium H 2 CrO 4 ⇌ HCrO − 4 + H + is not well characterized. Reported values vary between about −0.8 and 1.6. [4] The dichromate ion is a somewhat weaker base than the chromate ion: [5]

  4. Sodium chromate - Wikipedia

    en.wikipedia.org/wiki/Sodium_chromate

    Sodium chromate is the inorganic compound with the formula Na 2 CrO 4. It exists as a yellow hygroscopic solid, which can form tetra-, hexa-, and deca hydrates . It is an intermediate in the extraction of chromium from its ores.

  5. Calcium chromate - Wikipedia

    en.wikipedia.org/wiki/Calcium_chromate

    Calcium chromate is an inorganic compound with the formula CaCrO 4, i.e. the chromate salt of calcium. It is a bright yellow solid which is normally found in the dihydrate form CaCrO 4 ·2H 2 O. A very rare anhydrous mineral form exists in nature, which is known as chromatite .

  6. Nickel(II) chromate - Wikipedia

    en.wikipedia.org/wiki/Nickel(II)_chromate

    The structure of nickel chromate is the same as for chromium vanadate, CrVO 4. Crystals have an orthorhombic structure with unit cell sizes a = 5.482 Å, b = 8.237 Å, c = 6.147 Å. The cell volume is 277.6 Å 3 with four formula per unit cell. [5] [7] Nickel chromate is dark in colour, unlike most other chromates which are yellow. [3]

  7. Zinc chromate - Wikipedia

    en.wikipedia.org/wiki/Zinc_chromate

    Zinc chromate, Zn Cr O 4, is a chemical compound, a salt containing the chromate anion, appearing as odorless yellow powder or yellow-green crystals, but, when used for coatings, pigments are often added. [2] [3] [4] It is used industrially in chromate conversion coatings, having been developed by the Ford Motor Company in the 1920s. [5]

  8. Magnesium chromate - Wikipedia

    en.wikipedia.org/wiki/Magnesium_chromate

    Magnesium chromate is a chemical compound, with the formula MgCrO 4. It is a yellow, odorless, water-soluble salt with several important industrial uses. This ...

  9. Strontium chromate - Wikipedia

    en.wikipedia.org/wiki/Strontium_chromate

    Strontium chromate is approximately 30 times more soluble in water at 100 °C than at room temperature. Therefore, the yellow strontium chromate can be suspended in a hot solution of a soluble sulfate to digest until fully converted to the much less soluble and white strontium sulfate, leaving the chromate or dichromate in solution.