Copper(II) arsenate
Names | |
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IUPAC name
Copper(II) arsenate
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Other names
Copper arsenate
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Identifiers | |
7778-41-8 | |
3D model (Jmol) | Interactive image |
ChemSpider | 24279 |
PubChem | 26065 |
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Properties | |
Cu3(AsO4)2 | |
Molar mass | 468.48 g/mol |
Appearance | blue or bluish green powder |
Density | 5.2 g/cm3 |
Melting point | 1,100 °C (2,010 °F; 1,370 K) |
insoluble | |
Solubility | soluble in ammonia, dilute acids |
Hazards | |
US health exposure limits (NIOSH): | |
PEL (Permissible)
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TWA 1 mg/m3 (as Cu)[1] |
REL (Recommended)
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TWA 1 mg/m3 (as Cu)[1] |
IDLH (Immediate danger)
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TWA 100 mg/m3 (as Cu)[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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verify (what is ?) | |
Infobox references | |
Copper arsenate (Cu3(AsO4)2.4H2O, or Cu5H2(AsO4)4.2H2O), also called copper orthoarsenate, tricopper arsenate, cupric arsenate, or tricopper orthoarsenate, is a blue or bluish-green powder insoluble in water and alcohol and soluble in aqueous ammonium and dilute acids. Its CAS number is
Uses[edit]
Copper arsenate is an insecticide used in agriculture. It is also used as a herbicide, fungicide, and a rodenticide. It is also used as a poison in slug baits.
Copper arsenate can also be a misnomer for copper arsenite, especially when meant as a pigment.
Natural occurrences[edit]
Anhydrous copper arsenate, Cu3(AsO4)2, is found in nature as the mineral lammerite.[2] Copper arsenate tetrahydrate, Cu3(AsO4)2.4H2O, occurs naturally as the mineral rollandite.[3]
Related compounds[edit]
Copper arsenate hydroxide or basic copper arsenate (Cu(OH)AsO4) is a basic variant with CAS number
See also[edit]
- Lead arsenate
- Calcium arsenate
- Paris Green (copper acetoarsenite)
- Chromated copper arsenate
- Scheele's Green (copper arsenite)
References[edit]
- ^ a b c "NIOSH Pocket Guide to Chemical Hazards #0150". National Institute for Occupational Safety and Health (NIOSH).
- ^ Hawthorne, F. C. (1986). "Lammerite, Cu3(AsO4)2, a modulated close-packed structure" (PDF). American Mineralogist. 71: 206–209.
- ^ Sarp, H.; Černý, R. (2000). "Rollandite, Cu3(AsO4)2·4H2O, a new mineral". Eur. J. Mineral. 12: 1045–1050. doi:10.1127/0935-1221/2000/0012-1045.
- ^ [1]
External links[edit]
Wikimedia Commons has media related to Copper(II) arsenate. |