Calcium arsenate
| Names | |
|---|---|
| Other names
Calcium orthoarsenate
Cucumber dust | |
| Identifiers | |
| ECHA InfoCard | 100.029.003 |
PubChem CID
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| RTECS number |
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CompTox Dashboard (EPA)
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| Properties | |
| Ca3As2O8 | |
| Molar mass | 398.072 g/mol |
| Appearance | white powder |
| Density | 3.620 g/cm3, solid |
| Melting point | 1455°C (decomposes) |
| 0.013 g/100 mL (25°C) | |
| Solubility in Organic solvents | insoluble |
| Solubility in acids | soluble |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Calcium arsenate (Ca3(AsO4)2) is an extremely poisonous chemical compound. It was originally used as a pesticide and as a germicide. It is highly soluble in water, as compared with lead arsenate, which makes it more toxic.
Preparation
Calcium arsenate is prepared from a reaction of calcium chloride with sodium arsenate.
Safety and health concerns
Currently, the substance is banned from the use for plant protection by the UK government [1].
References
- ^ Chemicals Regulation Directorate. "Banned and Non-Authorised Pesticides in the United Kingdom". Retrieved 1 December 2009.
{{cite web}}: Cite has empty unknown parameter:|coauthors=(help)
- Sunset Western Garden Book, First Edition, 1954
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