French
DeutschCadmium chromate
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| Names | |
|---|---|
| IUPAC name Cadmium chromate | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.034.759 |
| EC Number |
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PubChem CID | |
| UNII | |
CompTox Dashboard (EPA) | |
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| 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). | |
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
[edit]- ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0087". National Institute for Occupational Safety and Health (NIOSH).
- ^ 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
- ^ 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.