Names | |
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IUPAC name
Copper(II) arsenate
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Other names
Copper arsenate
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Identifiers | |
3D model (JSmol)
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ChemSpider | |
PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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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 product (Ksp)
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7.95×10−36[1] |
Solubility | soluble in ammonia, dilute acids |
Hazards | |
NIOSH (US health exposure limits): | |
PEL (Permissible)
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TWA 1 mg/m3 (as Cu)[2] |
REL (Recommended)
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TWA 1 mg/m3 (as Cu)[2] |
IDLH (Immediate danger)
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TWA 100 mg/m3 (as Cu)[2] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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 or .