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Zinc chromate

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Zinc chromate
Names
IUPAC name Zinc chromate
Identifiers
CAS Number
ECHA InfoCard 100.033.511 Edit this at Wikidata
PubChem CID
RTECS number
  • GB3290000
CompTox Dashboard (EPA)
Properties
Chemical formula ZnCrO4
Molar mass 181.403 g/mol
Appearance yellow-green crystals
Density 3.43 g/cm
Melting point 316 °C
Boiling point 732 °C
Solubility in water insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound
B-25 Mitchell bombers, painted with Zinc Chromate undercoat, being assembled, 1942

Zinc chromate, ZnCrO4, is a chemical compound containing the chromate anion. It is used industrially in chromate conversion coatings.

Its use as a corrosion resistant agent was applied to aluminium alloy parts first in commercial aircraft, and then in military ones. During the 1940 and 1950s it was typically found as the "paint" in the wheel wells of retractable landing gear on U.S. military aircraft, not because of its glaring yellow-green color symbolizing anything, but to protect the aluminium from corrosion.

When used as a pigment, it is known as Zinc Yellow or Yellow 36. It is highly toxic and rarely used in art anymore.

Zinc compounds
Zinc(I)
Organozinc(I) compounds
Zinc(II)
Organozinc(II) compounds
  • Zn(CH3)2
  • Zn(C2H5)2
  • Zn(CH3COO)2
  • Zn(CH(CH3)2)2
  • Zn(C(CH3)3)2
  • Zn(C6H5)2
  • Zn(C3H5O3)2
  • ZnICH2I


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