Cadmium chromate

Cadmium chromate

Names
IUPAC name cadmium(2+);dioxido(dioxo) chromium
Identifiers
3D model (Jmol)	Interactive image
ChemSpider	14560858
ECHA InfoCard	100.034.759
PubChem	20065476
InChI 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
SMILES [O-][Cr](=O)(=O)[O-].[Cd+2]
Properties
Chemical formula	CdCrO4
Molar mass	228.405
Appearance	yellow orthohombric crystal
Density	4.5 g/cm^3
Hazards
US health exposure limits (NIOSH):
PEL (Permissible)	[1910.1027] TWA 0.005 mg/m^3 (as Cd)[1]
REL (Recommended)	Ca[1]
IDLH (Immediate danger)	Ca [9 mg/m^3 (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 aluminum, 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. "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". ISBN 9781566773355.