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chromate Definition

chro·mate (krō′māt′)

noun

  1. a salt of chromic acid, containing the divalent, negative radical CrO
  2. an uncharged ester of this acid

Etymology: chrom(ium) + -ate

chromate Usage Examples

Adjective modifier

  • lead: In 1979 the Color Company abandoned the site, leaving many of the buildings heavily contaminated with lead chromate.

Modifies a noun

  • ion: The yellow band is due to negative chromate ions, CrO 4 2- - , moving toward the positive electrode.
  • inhibitor: For example, chlorinated biocides are less toxic than brominated biocides; and polyphosphate and organophosphate inhibitors are less toxic than chromate corrosion inhibitors.

Noun used with modifier

  • zinc: What is the role of zinc chromate as a pigment in a priming paint for steels?
  • lead: The XRF signal was saturated by the pigment lead chromate.
  • potassium: Boiled with solution of potassium chromate and sulphuric acid, it evolves an odor of benzaldehyde.
  • copper: A ' line ' of copper chromate solution is placed in the middle of the paper and the current switched on.