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Updating {{chembox}} (no changed fields - added verified revid - updated 'CASNo_Ref', 'verifiedrevid') per Chem/Drugbox validation (report errors or bugs)
Temperatures (melting, boiling, autoignite, flash) use convert template to calculate (m: rm setting imagesize to dflt). using AWB
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| IUPACName = Copper(II) arsenate
| IUPACName = Copper(II) arsenate
| OtherNames = Copper arsenate
| OtherNames = Copper arsenate
| Section1 = {{Chembox Identifiers
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 24279
| ChemSpiderID = 24279
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| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = RKYSWCFUYJGIQA-UHFFFAOYSA-H
| StdInChIKey = RKYSWCFUYJGIQA-UHFFFAOYSA-H
| CASNo = 7778-41-8
| CASNo = 7778-41-8
| CASNo_Ref = {{cascite|correct|??}}
| CASNo_Ref = {{cascite|correct|??}}
| PubChem = 26065
| PubChem = 26065
| RTECS =
| RTECS =
}}
}}
| Section2 = {{Chembox Properties
|Section2={{Chembox Properties
| Formula = Cu<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>
| Formula = Cu<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>
| MolarMass = 468.48 g/mol
| MolarMass = 468.48 g/mol
| Appearance = blue or bluish green powder
| Appearance = blue or bluish green powder
| Density = 5.2 g/cm<sup>3</sup>
| Density = 5.2 g/cm<sup>3</sup>
| MeltingPt = 1100 °C
| MeltingPtC = 1100
| BoilingPt =
| BoilingPt =
| Solubility = insoluble
| Solubility = insoluble
| SolubleOther = soluble in [[ammonia]], dilute [[acid]]s
| SolubleOther = soluble in [[ammonia]], dilute [[acid]]s
}}
}}
| Section7 = {{Chembox Hazards
|Section7={{Chembox Hazards
| EUIndex = Not listed
| EUIndex = Not listed
| FlashPt =
| FlashPt =
}}
}}
| Section8 = {{Chembox Related
|Section8={{Chembox Related
| OtherAnions =
| OtherAnions =
| OtherCations =
| OtherCations =
}}
}}
}}
}}


Revision as of 00:51, 30 November 2014

Copper(II) arsenate
Names
IUPAC name
Copper(II) arsenate
Other names
Copper arsenate
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/2AsH3O4.3Cu/c2*2-1(3,4)5;;;/h2*(H3,2,3,4,5);;;/q;;3*+2/p-6 checkY
    Key: RKYSWCFUYJGIQA-UHFFFAOYSA-H checkY
  • InChI=1/2AsH3O4.3Cu/c2*2-1(3,4)5;;;/h2*(H3,2,3,4,5);;;/q;;3*+2/p-6
    Key: RKYSWCFUYJGIQA-CYFPFDDLAM
  • [Cu+2].[Cu+2].[Cu+2].[O-][As]([O-])(=O)[O-].[O-][As]([O-])([O-])=O
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
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

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 7778-41-8 or 10103-61-4.

Uses

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

Anhydrous copper arsenate, Cu3(AsO4)2, is found in nature as the mineral lammerite.[1] Copper arsenate tetrahydrate, Cu3(AsO4)2.4H2O, occurs naturally as the mineral rollandite.[2]

Copper arsenate hydroxide or basic copper arsenate (Cu(OH)AsO4) is a basic variant with CAS number 16102-92-4. It is found naturally as the mineral olivenite. It is used as an insecticide, fungicide, and miticide. Its use is banned in Thailand since 2001.[1]

See also

Wikimedia Commons has media related to Copper(II) arsenate.

References

  1. ^ Hawthorne, F. C. (1986). "Lammerite, Cu3(AsO4)2, a modulated close-packed structure" (PDF). American Mineralogist. 71: 206–209.
  2. ^ 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.
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