Lead(II) chromate
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| Lead(II) chromate | |
|---|---|
| Image:Lead(II) chromate.jpg | |
| General | |
| Other names | chrome yellow chrome orange plumbous chromate |
| Molecular formula | PbCrO4 |
| Molar mass | 323.2 g/mol |
| Appearance | orange-yellow powder |
| CAS number | [7758-97-6] |
| Properties | |
| Density and phase | 6.3 g/cm3, solid |
| Solubility in water | negligible |
| Melting point | 844°C |
| Boiling point | ? |
| Hazards | |
| EU classification | not listed |
| NFPA 704 |    |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Lead(II) chromate (PbCrO4) is a chemical compound. It has a vivid yellow color and is practically insoluble in water, and as a result, is used in paints under the name "chrome yellow". Previously, its use was wider. It and "white lead", or lead(II) carbonate, were the most common lead-based paint pigments. It is commonly made in the laboratory by reacting a lead(II) salt (such as lead(II) nitrate) with a chromate or dichromate salt (such as potassium chromate or potassium dichromate) in solution in water, producing a very deep yellow to orange precipitate of lead(II) chromate.
Conditions/substances to avoid are: strong reducing agents, combustibles and organic materials.
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