Cadmium chromate
Names
IUPAC name
Cadmium chromate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.034.759
EC Number
  • 238-252-0
UNII
  • InChI=1S/Cd.Cr.4O/q+2;;;;2*-1
    Key: GLPMHULIKFGNIJ-UHFFFAOYSA-N
  • InChI=1/Cd.Cr.4O/q+2;;;;2*-1/rCd.CrO4/c;2-1(3,4)5/q+2;-2
    Key: GLPMHULIKFGNIJ-QCFQOAFPAB
  • [O-][Cr](=O)(=O)[O-].[Cd+2]
Properties
CdCrO4
Molar mass 228.405
Appearance yellow orthorhombic crystal
Density 4.5 g/cm3
-16.8·10−6 cm3/mol
Hazards
NIOSH (US health exposure limits):
PEL (Permissible)
 [1910.1027] TWA 0.005 mg/m3 (as Cd)[1]
REL (Recommended)
 Ca[1]
IDLH (Immediate danger)
 Ca [9 mg/m3 (as Cd)][1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Cadmium chromate is the inorganic compound with the formula CdCrO4. It is relevant to chromate conversion coating, which is used to passivate common metal alloys such as aluminium, zinc, cadmium, copper, silver, magnesium, and tin.[2] In conversion coating chromate reacts with these metals to prevent corrosion, retain electrical conductivity, and provide a finish for the appearance of the final alloy products.[3] This process is commonly used on hardware and tool items. Chromate species take on their distinctive yellow color when coated.

References

  1. 1 2 3 NIOSH Pocket Guide to Chemical Hazards. "#0087". National Institute for Occupational Safety and Health (NIOSH).
  2. ↑ Buschow, K.H. Jürgen; Cahn, Robert W.; Flemings, Merton C.; Ilschner, Bernhard; Kramer, Edward J.; Mahajan, Subhash (Editors), Encyclopedia of Materials - Science and Technology (2001) p. 1265, Elsevier, Oxford, UK
  3. ↑ Frankel, Gerald S; Gerald s. Frankel, Robert Peter Frankenthal (2002). Corrosion Science: A Retrospective and Current Status in Honor of Robert P. Frankenthal. The Electrochemical Society. ISBN 9781566773355.
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